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Storm News
[Index][Aussie-Wx] |
Australian Weather Mailing List Archives: Tuesday, 15 June 1999 |
From Subject
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001 Chas & Helen Osborn [hosborn at tassie.net.au] [Fwd: World Satelite Photograph]
002 Lindsay [writer at lisp.com.au] Snow
003 Lindsay [writer at lisp.com.au] snow
004 Michael Scollay [michael.scollay at telstra.com. Aussie-freezing - was: Journalistic turns of phrase
005 Chris Maunder [cmaunder at dynamite.com.au] Snow near Canberra
006 Chris Maunder [cmaunder at dynamite.com.au] Cold air anvil
007 Michael Scollay [michael.scollay at telstra.com. Snow Chase in the Blue mtns
008 Blair Trewin [blair at met.Unimelb.EDU.AU] Victoria's weekend - something of a fizzer (at low elevation
009 Michael Scollay [michael.scollay at telstra.com. Snow
010 Michael Scollay [michael.scollay at telstra.com. Some more resources for watching the cold
011 Chas & Helen Osborn [hosborn at tassie.net.au] Launceston Weather
012 "Andrew Miskelly" [amiskelly at ozemail.com.au] Funnel Cloud in NSW!!
013 Michael Scollay [michael.scollay at telstra.com. NPMOC JTWC increases GMSFULL resolution.
014 Blair Trewin [blair at met.Unimelb.EDU.AU] Funnel Cloud in NSW!!
015 Michael Scollay [michael.scollay at telstra.com. [Fwd: World Satelite Photograph]
016 "Andrew Miskelly" [amiskelly at ozemail.com.au] Snow No Show!
017 Michael Scollay [michael.scollay at telstra.com. Too much snow at Blue Cow:-)
018 Chris Maunder [cmaunder at dynamite.com.au] Too much snow at Blue Cow:-)
019 Lindsay [writer at lisp.com.au] NE NSW weather 14/6
020 "Michael Thompson" [michaelt at ozemail.com.au] Snow
021 "Michael Thompson" [michaelt at ozemail.com.au] radar and low cloud
022 "Michael Thompson" [michaelt at ozemail.com.au] Classic Lee Side Lenticular Cloud in Illawarra
023 wbc at ozemail.com.au (Laurier Williams) Snow
024 Michael Scollay [michael.scollay at telstra.com. radar and low cloud
025 Michael Scollay [michael.scollay at telstra.com. Snow
026 "Weather Co." [twc at theweather.com.au] radar and low cloud
027 Michael Scollay [michael.scollay at telstra.com. U & V components of wind...
028 Matt Smith [disarm at braenet.com.au] Classic Lee Side Lenticular Cloud in Illawarra
029 Anthony Cornelius [cyclone at rmitel.com.au] U & V components of wind...
030 Jacob [jacob at iinet.net.au] Ahhh, a Perth winter, got to love it
031 Blair Trewin [blair at met.Unimelb.EDU.AU] Oberon - blowing snow
032 Michael Scollay [michael.scollay at telstra.com. U & V components of wind...
033 Michael Scollay [michael.scollay at telstra.com. Oberon - blowing snow
034 wbc at ozemail.com.au (Laurier Williams) Funnel Cloud in NSW!!
035 Anthony Cornelius [cyclone at rmitel.com.au] U & V components of wind...
036 wbc at ozemail.com.au (Laurier Williams) Oberon - blowing snow
037 wbc at ozemail.com.au (Laurier Williams) NPMOC JTWC increases GMSFULL resolution.
038 Blair Trewin [blair at met.Unimelb.EDU.AU] Snowfalls
039 Andrew Wall [astroman at chariot.net.au] Hail Storm Damage report SA. (not comfirmed yet)
040 Michael Scollay [michael.scollay at telstra.com. NPMOC JTWC increases GMSFULL resolution.
041 Lindsay [writer at lisp.com.au] Victoria's weekend - something of a fizzer (at low elevation
042 Lindsay [writer at lisp.com.au] Camera found!
043 Michael Scollay [michael.scollay at telstra.com. AVN 18:00Z model run stuffed:-(
044 Michael Scollay [michael.scollay at telstra.com. Victoria's weekend - something of a fizzer (at low
045 Michael Scollay [michael.scollay at telstra.com. Camera found!
046 Jimmy Deguara [jimmyd at ozemail.com.au] U & V components of wind...
047 Michael Scollay [michael.scollay at telstra.com. AVN 18:00Z model run stuffed:-(
048 Jimmy Deguara [jimmyd at ozemail.com.au] U & V components of wind...
049 Andrew Wall [astroman at chariot.net.au] Camera found!
050 Jimmy Deguara [jimmyd at ozemail.com.au] Important!! July ASWA Annual General Meeting
051 Andrew Wall [astroman at chariot.net.au] U & V components of wind...
052 Michael Scollay [michael.scollay at telstra.com. U & V components of wind...
053 Jimmy Deguara [jimmyd at ozemail.com.au] U & V components of wind...
054 wbc at ozemail.com.au (Laurier Williams) Nice cold air vortex crossing the Snowies
055 Anthony Cornelius [cyclone at rmitel.com.au] Brisbane Suburbs Could go Below 0 Tonight
056 "Jane ONeill" [cadence at rubix.net.au] T shirts - nag No3 (FINAL EDITION! - just on the offchance y
057 wbc at ozemail.com.au (Laurier Williams) Camera found!
058 Jimmy Deguara [jimmyd at ozemail.com.au] Camera found!!
059 "Michael Thompson" [michaelt at ozemail.com.au] Classic Lee Side Lenticular Cloud in Illawarra
060 Keith Barnett [weather at ozemail.com.au] Oberon - blowing snow
061 Norman Lynagh [lynagh at dial.pipex.com] Oberon - blowing snow
062 Ben Munro [benjamin at biosys.net] Snow
063 Ben Munro [benjamin at biosys.net] Oberon - blowing snow
064 Ben Munro [benjamin at biosys.net] Oberon - blowing snow
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001
Date: Tue, 15 Jun 1999 07:48:41 +1000
From: Chas & Helen Osborn [hosborn at tassie.net.au]
X-Mailer: Mozilla 4.51 [en] (Win98; I)
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To: Australian Weather Mailing List [aussie-weather at world.std.com]
Subject: aus-wx: [Fwd: World Satelite Photograph]
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hello Everyone
This is the URL for the intellicast World Sat Photo
Chas
Launceston Tasmania
Here you go... http://www.intellicast.com/Sail/World/UnitedStates/World/
-----Original Message-----
From: Chas & Helen Osborn [hosborn at tassie.net.au]
To: comments at intellicast.com [comments at intellicast.com]
Date: Sunday, June 13, 1999 5:43 PM
Subject: World Satelite Photograph
>Dear Sir
>You had a excellent colour world satellite photograph in you previous
>web page. I dearly miss it because at a glance you could see what was
>happening around the world.
>I hope you will reconsider you decision to drop this photograph.
>regards
>Chas Osborn
>Strahan
>Tasmania
>Australia
>
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002
Date: Tue, 15 Jun 1999 04:55:35 -0700
From: Lindsay [writer at lisp.com.au]
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To: aussie-weather at world.std.com
Subject: aus-wx: Snow
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Laurier, have you had a chance to look out over Oberon way from the
lookouts? Do you know what that mountain is covered in snow that is
virtually due west? From Mount Boyce Lookout you can get a good glimpse
of the snow cover out that way.
Why is it that the cloud, even today when it is fine here, is sitting
atop the range out Oberon way and not here? Does the slightly more
west/nw wind flow have something to do with it? It was even snowing in
Lowther/Goodforest yesterday, blizzard like actually and only flurries
here in Blackheath.
We had some pretty nice flurries last night here in Blackheath but
NOTHING like out Oberon way.
Currently at 8:40 am in Blackheath it is 1 degree and -1 wetbulb nad
very windy.
Lindsay P.
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003
Date: Mon, 14 Jun 1999 14:25:37 -0700
From: Lindsay [writer at lisp.com.au]
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To: aussie-weather at world.std.com
Subject: aus-wx: snow
Sender: aussie-weather-approval at world.std.com
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Many snow photos of area south of Oberon available soon, I hope.
Some great shots! hope they turn out.
Lindsay Pearce
Jimmy Deguara wrote:
>
> Hi Jimmy here,
>
> Taking into account the distance, possible obstructions of mountains and
> the fact that the cloudsmtoday are relatively low, the radar is only
> picking out a few of the showers on the mtns. I believe from observations
> there is quite a bit more in terms of showers. It may only be picking up
> the more heavier showers.
>
> On a different note, there are quite a few on the list who have not spoken
> for a little while and I know that some are interested in the snow etc. I
> hope when they get back to normal over the next few days that they can
> contribute their observations of snow as I know some would have gone to the
> Snowy Mtns and Tim Crugeon on the Barrington Tops as he normally does. I
> would say snow is prevelant there at the moment.
>
> Cold Jimmy Deguara
> ----------------------------------------------------------------------------
> ---------------
> Jimmy Deguara
> Vice President ASWA
> from Schofields, Sydney
> e-mail: jimmyd at ozemail.com.au
> homepage with Michael Bath
>
> http://www.australiansevereweather.simplenet.com/
>
> Australian Severe Weather Association home information page
>
> http://www.severeweather.asn.au/
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004
Date: Tue, 15 Jun 1999 10:29:37 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: aus-wx: Aussie-freezing - was: Journalistic turns of phrase
Sender: aussie-weather-approval at world.std.com
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Laurier Williams wrote on Sat, 12 Jun 1999 09:06:32 GMT:
>
> On Sat, 12 Jun 1999 08:55:43 +0100, Les Crossan
> wrote:
>
> >Laurier Williams wrote on :
> >
> >> I guess pitch black icy conditions are even more slippery than
> >> normal black icy conditions.
> >
> >Perhaps what they're trying to say is "black ice at night" it
> >was 1130pm your time... being no stranger to sheet ice on roads
> >it's really hard to see!
> >
> I take your point. A hyphen wouldn't go astray.
Give me just snow to drive on any day...chains can even have
problems breaking up the surface of the infamous "black-ice".
Bad choice of words IMHO since it just takes on a colour
darker and hopefully with more shine than the surface on
which it lies. Just so happens that sealed roads at night can
change within minutes from snow on edges with melt water flowing
over the road to that melt-water in its dangerous frozen state.
>
> >A case of "mini - frost" with the temperatures reaching freezing
> >or just below??
> >
> Mt Hotham got down to -6.4 last night
>
> >What sort of lowest temperatures do you get in NSW surely
> >-4c is about as low as its going to go...
> >
> Charlotte Pass in the Snowy Mountains had -12 last night, and Glen
> Innes on the Northern Tablelands -7. There aren't too many places or
> too many nights that the temp falls below -5, but sheltered spots all
> along the tablelands are capable of several >-10s each winter.
I was in Perisher Valley (PV) the day CP set a new record low
somewhere down around -23C. PV got down to -18C or -19C I think.
Such is the nature of these two "frost hollows" of sorts. It was
warmer at Mt. Crackenback (MC) above Thredbo that calm day (Blair
could tell). I've also been skiing in Thredblow (sic) when it was
-14C on MC, -10C in Thredbo, sometime in 1981 with an 85kph wind
up on MC. That sent the wind-chill factor down below -40C!
Michael Scollay mailto:michael.scollay at telstra.com.au
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005
X-Sender: cmaunder at mail.dynamite.com.au
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Date: Tue, 15 Jun 1999 10:52:18 +1000
To: aussie-weather at world.std.com
From: Chris Maunder [cmaunder at dynamite.com.au]
Subject: Re: aus-wx: Snow near Canberra
Sender: aussie-weather-approval at world.std.com
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At 19:19 14/06/99 , you wrote:
>Also got snowed on at Gibraltar rocks at Tidbinbilla - the mountains
>behind Tidbinbilla are very white (they go up to around 1500-1600m
>from memory so there will be a lot of white visible from Canberra
>when visibility improves.
Yep - the snow is clearly visible in between breaks in the cu/sc
cover. Classic snow conditions over the ranges at the moment - a
seemingly motionless mass of grey, glaciated cu/sc with well defined
snow/sleet falls streaming out the base and disappearing at around
the 1000/1200m mark. In Macgregor/Holt (western suburbs) there is
still a continues spray of melting sleet, but where I am (about 3km
eastwards) there is nothing but icy blasts of cold air. Will wait until
tomorrow morning then go for a cruise down to Tidbinbilla.
Chris.
Chris Maunder (Canberra)
http://www.geocities.com/SiliconValley/Haven/2473/
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006
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Date: Tue, 15 Jun 1999 10:46:18 +1000
To: aussie-weather at world.std.com
From: Chris Maunder [cmaunder at dynamite.com.au]
Subject: Re: aus-wx: Cold air anvil
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Excellent!!
At 16:24 14/06/99 , you wrote:
>Just had a gorgeous coldy slide by a few km to my south. Got some nice
>chilly outflow for 4 or 5 minutes. Took some piccies of some interesting
>base structure. I'd say for you lucky souls in the east - the best is yet
>to come...
>
>Phil 'Paisley' Bagust
>paisley at cobweb.com.au
>www.cobweb.com.au/~paisley
>
>
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> -----------------------jacob at iinet.net.au------------------------------
>
------------------------------------------------------
Chris Maunder Canberra, Australia
Administrator CodeGuru - www.codeguru.com
Technical Consultant Dundas Software - www.dundas.com
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007
Date: Tue, 15 Jun 1999 10:59:59 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Snow Chase in the Blue mtns
Sender: aussie-weather-approval at world.std.com
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Lindsay wrote:
>
> Fair enough.
>
> I will be pretty busy tomorrow but I will post as often as I can on
> weather observations over the next few days. Could be in for some good
> white stuff I reckon.
>
> Lindsay Pearce
> Jimmy Deguara wrote:
> >
> > If anyone feels that the Blue Mtns will give a good snow chase
> > situation say tomorrow especially those on the mtns, indicate so
> > and perhaps we may go up the Bells Line Road and chase to see if
> > we cold see a few snow flakes...
> >
Snow-chasing in the Central Tablelands and Blue Mountains was my
domain a many years ago. Mt Boyce is OK as starters but make a
bee-line towards Oberon, approaching from the Hartley side. The
road from the Bathurst side is often closed earlier. This way,
you'll start to get snow under the conditions of Monday June
14 as you rise within the "snow-shadow" keeping Mt Bindo on your
right. You'll be lucky to make it to Oberon with best conditions
just beyond Oberon to the south near a place know as "Norway" (?)
and the Oberon Dam. A road just east of Oberon heads south toward
Shooters Hill where you'll find some of the best snow play in the
Central Tablelands with the hills near the cemetery. I've been
driving a car through this area bordering on fitting snow chains.
That's with 10 to 15cm of snow around. It's quite lofty in the
Oberon area with many hills over 1200m. Remember that Oberon
(1085m) together with the Oberon Prison Camp site (1148) were
/ still are the coldest weather stations in NSW outside of the
Snowy Mountains.
Michael Scollay mailto:michael.scollay at telstra.com.au
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008
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: aus-wx: Victoria's weekend - something of a fizzer (at low elevations anyway)
To: aussie-weather at world.std.com (Aussie Weather)
Date: Tue, 15 Jun 1999 11:27:48 +1000 (EST)
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I had my hopes high for seeing some of the white stuff this weekend,
especially on Monday - I spent Sunday and Monday in Daylesford (650m)
and the models suggested thicknesses in the upper 520s on Monday,
which would have been enough for snow there, perhaps quite a lot of
it.
As it turned out there was none of any consequence - a few flakes
around 11 on Monday morning but nothing else. Sunday, though, would
have be a strong contender for the title of the worst conditions I've
ever orienteered in - steady moderate rain, strong winds and
temperatures around 3-4 degrees all day (now I know what it's like
to run early- and late-season in Scandinavia!). Interestingly,
Melbourne had virtually no rain on Sunday - the flow was NW and, while
the northern slopes of the ranges had rain most of the day, Melbourne
was in a rainshadow. (Even going 20km south from Daylesford made a
big difference). Monday was just as cold, but nowhere near as wet -
just occasional showers in a fresh SW flow.
I'd guess the snow level was around 800-900 metres, which was consistent
with what Jane and co. got. I noticed the reports from Orange etc. -
how much did they end up with?
Definitely not a fizzer for the ski resorts - 30cm+ in general, I
believe.
Blair Trewin
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009
Date: Tue, 15 Jun 1999 11:36:28 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Snow
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Lindsay wrote:
>
> Well, what a day in Oberon and South of Oberon today, Monday the 14th.
> ... Inches and inches of fallling snow in the township itself
> and huge dumps near shooters hill.
> ...
> Sure, there was more snow on the Alps but to see this much snow
> on the Central Tablelands was just great. I really should leave
> the pictures to tell the story so as not to exaggerate the
> situation but I have macro shots of snow close to me knees in
> depth, if i remember correctly. Total white out in the surrounding
> landscape and thick snow, at least for here. There was inches and
> inches of snow piled on cars and roads were very icy and snowy.
> But...I'll let the photos do the rest of the talking, when I
> eventually get them processed.
You took the words out of my mouth, Lindsay. Pity you didn't
use Jimmy's "snow chasing" thread as that was what I replied
to. Next time, take some chains. Your account triggers memories
of my ventures into that region when the really good snow comes
in Those sort of chains with the herringbone pattern that the
snow-ploughs use:-) I had an an ex-Bathurst-racing Alfasud
with a limited-slip-diff and a set of -those- chains that only
ground to a halt with snow much deeper than the front air dam
(30cm+). That was about 5km short of Shooters Hill back in 1981. Sometimes, there can be just too much snow on the road and the
car couldn't push it away. The only problem I found was that
when I could go no further, turning around was a problem as
I couldn't see the road limits. Now with a 4WD equipped with
diff-lock and 2 sets of cross-hatch herringbone chains...
Welcome your pics - hurry!:-)
Michael Scollay mailto:michael.scollay at telstra.com.au
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010
Date: Tue, 15 Jun 1999 11:42:41 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Some more resources for watching the cold
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
[snip great cold-observer info
Thank you, Laurier!
Michael Scollay mailto:michael.scollay at telstra.com.au
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011
Date: Tue, 15 Jun 1999 09:44:11 +1000
From: Chas & Helen Osborn [hosborn at tassie.net.au]
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To: Australian Weather Mailing List [aussie-weather at world.std.com]
Subject: aus-wx: Launceston Weather
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hello Everyone
9.45 am its foggy with visibility down to 50m and no sign of it lifting
for a long time , the temperature is 1c. Ben Lomond about 50km SE of
here has a covering of snow that is expected to last till tomorrow. We
did not get much of the cold air as it tends to pass to the west of us
and move over Melbourne on its way North.
Chas
Launceston Tasmania
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012
From: "Andrew Miskelly" [amiskelly at ozemail.com.au]
To: "Weather Mailing List" [aussie-weather at world.std.com]
Subject: aus-wx: Funnel Cloud in NSW!!
Date: Tue, 15 Jun 1999 11:52:00 +1000
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Hi all,
If anyone has read this mornings (15/6) 9AM obs for NSW, they will notice
Quandialla (Southwest slopes) reported a Funnel Cloud, does anyone know
anymore about this??
Andrew.
--
Andrew Miskelly
Illawarra/Southern Tablelands, NSW.
amiskelly at ozemail.com.au
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013
Date: Tue, 15 Jun 1999 11:56:46 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: Aussie Weather [aussie-weather at world.std.com]
Subject: aus-wx: NPMOC JTWC increases GMSFULL resolution.
Sender: aussie-weather-approval at world.std.com
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http://www.npmoc.navy.mil/products/jtwc/GMSFull_ir2.jpg
resolution has increased image resolution from 1350x1350 to
1700x1700 beginning with the image dated 199906142331 UTC.
Michael Scollay mailto:michael.scollay at telstra.com.au
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014
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Funnel Cloud in NSW!!
To: aussie-weather at world.std.com
Date: Tue, 15 Jun 1999 11:57:15 +1000 (EST)
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>
> Hi all,
>
> If anyone has read this mornings (15/6) 9AM obs for NSW, they will notice
> Quandialla (Southwest slopes) reported a Funnel Cloud, does anyone know
> anymore about this??
>
> Andrew.
>
> --
> Andrew Miskelly
> Illawarra/Southern Tablelands, NSW.
> amiskelly at ozemail.com.au
I strongly suspect a coding error. (If you watch the observations for
long enough you'll see plenty of snow reported at NT stations,
duststorms in the middle of steady rain and such like).
Blair Trewin
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015
Date: Tue, 15 Jun 1999 12:03:39 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: [Fwd: World Satelite Photograph]
Sender: aussie-weather-approval at world.std.com
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Chas & Helen Osborn wrote:
>
> Hello Everyone
>
> This is the URL for the intellicast World Sat Photo
>
> ..
> > Subject: Re: World Satelite Photograph
> > Date: Mon, 14 Jun 1999 12:25:23 -0400
> > From: "Intellicast"
> > To: "Chas & Helen Osborn"
>
> Here you go... http://www.intellicast.com/Sail/World/UnitedStates/World/
Neat pic! but there's always a downer:-( I found the site to
be very slow when compared to others like NPMOC...
Michael Scollay mailto:michael.scollay at telstra.com.au
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016
From: "Andrew Miskelly" [amiskelly at ozemail.com.au]
To: "Weather Mailing List" [aussie-weather at world.std.com]
Subject: aus-wx: Snow No Show!
Date: Tue, 15 Jun 1999 12:09:53 +1000
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Hi all,
It's been a pretty disappointing cold outbreak here in Taralga (850m alt,
45Km N of Goulburn) on the Southern Tablelands so far. Yesterday (Monday)
it sleeted all day - the epitomy of "Bad Weather" - and the temp remained
at about 2.0C. The most snow I've seen is the few very small flakes that
are falling on and off now, but the orographic effect is really setting in
now as the system moves east!
For the last few (el nino) years it's always been cold enough but not wet
enough, now it has been the opposite! That's pretty cutting too when you
hear about Oberon and Orange getting so much. We used to get great dumps
here too, but we haven't for 5 odd years now, very strange!
Ahwell, maybe next time (jeez that phrase is getting boring!)
Andrew.
--
Andrew Miskelly
Illawarra/Southern Tablelands, NSW.
amiskelly at ozemail.com.au
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017
Date: Tue, 15 Jun 1999 12:10:26 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: Aussie Weather [aussie-weather at world.std.com]
Subject: aus-wx: Too much snow at Blue Cow:-)
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Check out...
http://www.perisherblue.com.au/report/bluecow.html
Now this camera is some 7m off the ground! Me thinks that
someone has forgotten to clear the ice away from the window:-)
Michael Scollay mailto:michael.scollay at telstra.com.au
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018
X-Sender: cmaunder at mail.dynamite.com.au
X-Mailer: QUALCOMM Windows Eudora Pro Version 4.0
Date: Tue, 15 Jun 1999 12:30:35 +1000
To: aussie-weather at world.std.com
From: Chris Maunder [cmaunder at dynamite.com.au]
Subject: Re: aus-wx: Too much snow at Blue Cow:-)
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
At 12:10 15/06/99 , you wrote:
>Check out...
>
>http://www.perisherblue.com.au/report/bluecow.html
>
>Now this camera is some 7m off the ground! Me thinks that
>someone has forgotten to clear the ice away from the window:-)
Unless the unthinkable has happened :)
Imagine 7m of snow at Bluecow (dream... :)
Chris Maunder (Canberra)
http://www.geocities.com/SiliconValley/Haven/2473/
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019
Date: Tue, 15 Jun 1999 05:17:29 -0700
From: Lindsay [writer at lisp.com.au]
X-Mailer: Mozilla 3.0 (Win16; I)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: NE NSW weather 14/6
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Sometimes I really miss those surfing days but my back doesn't.
Lindsay Pearce
Michael Bath wrote:
>
> Hi all,
>
> We had sunny conditions today with strong and gusty W winds. No clouds
> apart from from distant stratocu to the west coming off the tablelands.
>
> Went down to North Wall at the entrance to the Richmond River this
> afternoon - waves were perfect for the surfies and some of the sets must
> have been around the 2.5m mark. Very cold for it though. Currently 12.3
> after a max today of 17.7, yet Murwillumbah about 70ks to the north scored
> 21. The hills certainly shelter that town and keep it a fair bit warmer
> than here.
>
> Michael.
> ============================================================
>
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020
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: Snow
Date: Tue, 15 Jun 1999 13:02:11 +1000
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My guess is that the great divide is out Oberon way, not as many think in
the Blue Mountains, if the wind was more SW it would be different, but what
little moisture the air has had has been squeezed out on the slopes around
Oberon. At Katoomba you are only lifting again what has already been lifted
and wrung out. It would also be different if the moisture was not so
shallow, you may have noticed that cloud tops were low and that there was a
complete lack of middle layer clouds.
Michael
> Laurier, have you had a chance to look out over Oberon way from the
> lookouts? Do you know what that mountain is covered in snow that is
> virtually due west? From Mount Boyce Lookout you can get a good glimpse
> of the snow cover out that way.
>
> Why is it that the cloud, even today when it is fine here, is sitting
> atop the range out Oberon way and not here? Does the slightly more
> west/nw wind flow have something to do with it? It was even snowing in
> Lowther/Goodforest yesterday, blizzard like actually and only flurries
> here in Blackheath.
>
> We had some pretty nice flurries last night here in Blackheath but
> NOTHING like out Oberon way.
>
> Currently at 8:40 am in Blackheath it is 1 degree and -1 wetbulb nad
> very windy.
>
> Lindsay P.
>
>
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>
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021
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: radar and low cloud
Date: Tue, 15 Jun 1999 12:37:53 +1000
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The radar is hopeless for picking up low cloud precip, and the mountains
only compound that, especially given that falls will be heaviest just west
of the great divide line. I went for a drive yesterday to Mittagong, did not
expect any snow, nor did I get any, but saw enough cloud / showers to the
far west to suggest the radar was not picking it up.
We have had cases here in the Illawarra were drizzle from low cloud has not
been picked up on radar.
Michael
>
> Taking into account the distance, possible obstructions of mountains and
> the fact that the cloudsmtoday are relatively low, the radar is only
> picking out a few of the showers on the mtns. I believe from observations
> there is quite a bit more in terms of showers. It may only be picking up
> the more heavier showers.
>
> On a different note, there are quite a few on the list who have not spoken
> for a little while and I know that some are interested in the snow etc. I
> hope when they get back to normal over the next few days that they can
> contribute their observations of snow as I know some would have gone to
the
> Snowy Mtns and Tim Crugeon on the Barrington Tops as he normally does. I
> would say snow is prevelant there at the moment.
>
> Cold Jimmy Deguara
> --------------------------------------------------------------------------
--
> ---------------
> Jimmy Deguara
> Vice President ASWA
> from Schofields, Sydney
> e-mail: jimmyd at ozemail.com.au
> homepage with Michael Bath
>
> http://www.australiansevereweather.simplenet.com/
>
> Australian Severe Weather Association home information page
>
> http://www.severeweather.asn.au/
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>
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022
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: aus-wx: Classic Lee Side Lenticular Cloud in Illawarra
Date: Tue, 15 Jun 1999 12:31:15 +1000
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A textbook Altostratus Lenticular cloud along the Illawarra coast at
present. W winds at 20-25knots, cloud keeping temperature to 13C.
Michael Thompson
http://thunder.simplenet.com
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023
From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Snow
Date: Tue, 15 Jun 1999 03:03:50 GMT
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On Tue, 15 Jun 1999 04:55:35 -0700, Lindsay
wrote:
>Laurier, have you had a chance to look out over Oberon way from the
>lookouts? Do you know what that mountain is covered in snow that is
>virtually due west? From Mount Boyce Lookout you can get a good glimpse
>of the snow cover out that way.
>
Hi Lindsay
That's Mt Bindo, 1363 metres, due west of Medlow Bath and NE from
Oberon. Another mountain worth knowing is Mt Trickett, 1362m, which
the Oberon to Jenolan Caves road goes right over the top of, before
descending to the caves -- there's a repeater station on the left that
marks the summit. These are the highest points on the Great Dividing
Range in this area by some margin, with other peaks only around 1250m
or so. Mt Trickett, being so accessible, is a good place to judge
snowfall -- if you can get there!
>Why is it that the cloud, even today when it is fine here, is sitting
>atop the range out Oberon way and not here? Does the slightly more
>west/nw wind flow have something to do with it? It was even snowing in
>Lowther/Goodforest yesterday, blizzard like actually and only flurries
>here in Blackheath.
>
With a SW wind, the wind has to rise over the high (~1300m) country
around Black Springs and Shooters Hill. By the time it gets to the
ridgetop between Mts Bindo and Trickett, which isn't significantly
higher, there's very little extra lift, hence very little extra
condensation, so cloud tends to keep above ground level.
With a westerly, or even WSW, the ridgetop between Mts Bindo and
Trickett is the highest point by far that winds have encountered after
rolling up the Fish River valley at around 700m, so substantial lift =
substantial condensation = mountains buried in low cloud.
The wind direction also dictates where there'll be the most snow,
provided the precipitation is being produced by topographic uplift. In
a westerly, there will be good snow east of Oberon, along the
Bindo/Trickett ridge, on the high country west of Lithgow (Yetholme
and Cheethams Flat ridges), and along the Good Forest/Lowther spur. I
notice the Great Western Highway was closed by snow at Yetholme this
morning. In a WSW or SW, these areas get less. Black Springs/Shooters
Hill does well in anything from WNW to SSW, when the high country west
of Canberra begins to rob it of moisture.
All this means that, in any direction between WNW and S, the Blue
Mountains ridge at ~1000/1100m is significantly lower than country the
airstream has already traversed, leading to the sort of weather we had
yesterday where the only snow fell from isolated still-active cumulus
cells drifting east from Bindo. I think (and would love to research
this some time) that the Blue Mountains gets its biggest snowfalls in
prefrontal N/NW streams (where country along the airstream trajectory
is <= 1100m), or in S/SE conditions (e.g. July 1965), or situations
where the upper cold pool is so cold that convergence and uplift are
driven by the system rather than the topography (e.g. 1900).
--
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/
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024
Date: Tue, 15 Jun 1999 13:19:36 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: radar and low cloud
Sender: aussie-weather-approval at world.std.com
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Michael Thompson wrote:
>
> The radar is hopeless for picking up low cloud precip, and the
> mountains only compound that, especially given that falls will
> be heaviest just west of the great divide line. I went for a
> drive yesterday to Mittagong, did not expect any snow, nor did
> I get any, but saw enough cloud / showers to the far west to
> suggest the radar was not picking it up.
[snip]
I agree, Michael. I've been watching the radar images over
the Snowy Mountains also that seem to pick up mid and upper
level precipitation but almost nothing nearer to ground
level. This makes it difficult to correllate radar images
with notable events. On many occasions, I've noted cloud
in the area and wind direction / velocity to produce
blizzard conditions with almost no show on the radar:-( I
can only confirm the event with a phone call to our lodge
at Perisher Valley or by watching the Blue Cow snow cam
if it is not snowed in:-)
Michael Scollay mailto:michael.scollay at telstra.com.au
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025
Date: Tue, 15 Jun 1999 14:04:51 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Snow
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Laurier Williams wrote on Tue, 15 Jun 1999 03:03:50 GMT:
Simply a brilliant analysis of this snow scenario...
> On Tue, 15 Jun 1999 04:55:35 -0700, Lindsay
> wrote:
>
> >Laurier, have you had a chance to look out over Oberon way from the
> >lookouts? Do you know what that mountain is covered in snow that is
> >virtually due west? From Mount Boyce Lookout you can get a good glimpse
> >of the snow cover out that way.
> >
> Hi Lindsay
>
> That's Mt Bindo, 1363 metres, due west of Medlow Bath and NE from
> Oberon. Another mountain worth knowing is Mt Trickett, 1362m, which
> the Oberon to Jenolan Caves road goes right over the top of...
Not quite, Laurier. The road goes between the two hills with
fire trails (and private road) heading off toward the "summits"
of Mt Bindo (I think) sown heavy with radiata pine plantations
and the microwave repeater site on Mt Trickett (I think) poking
out from above the tree tops.
[snip]
> I think (and would love to research this some time) that the
> Blue Mountains gets its biggest snowfalls in prefrontal N/NW
> streams (where country along the airstream trajectory is
> <= 1100m), or in S/SE conditions (e.g. July 1965), or
> situations where the upper cold pool is so cold that
> convergence and uplift are driven by the system rather
> than the topography (e.g. 1900).
Spot on, Laurier. I can add personal accounts:
May, 1974: an upper-level cold pool (didn't know about
"thickness at the time:-) dropped Katoomba's temp one
Saturday morning (6:45am) to about -2C while under the
influence of a E/SE air flow. Locals would know the
weather; cold, wet, low cloud to ground with heavy
"drizzle". In about 15mins, the low cloud lifted to
the top of the Carrington chimney and the snow came
bucketing straight down in the greatest of flakes, some
up to 3cm in diameter. Got to about 5cm deep in the main
street within 1/2 an hour and all washed away by lunch
time.
May 31, 1975/6 (? - not sure): Cold front came from
the S/SE and dropped the freezing level to 800m from
about 8am in the morning. I was going to Springwood
High School at the time and remember looking out the
window at the location of the "snow" level in the
precipitation area looking towards Mt. Tomah being
well below the top of Mt. Tomah. I couldn't wait to
get to our home in Katoomba. As we drove up Boddington
Hill (before Wentworth Falls), patches of snow gave
way to a total cover that spanned as far as you could
see. About 4-5cm fell in the upper Blue Mountains that
day. My snow man survived a week!
Late Oct, (late 70's I think): Upper pool of cold air
with accompanying cloud mass approached from the NW
seemingly completely un-announced about 9pm one night.
By 11pm, about 2cm of snow fell in almost calm
conditions. I remember this well as our cat went
outside to play in the fresh snow by jumping up to catch
snow flakes. She then went AWOL until midnight. Within
a couple of hours after sunrise, the snow had melted
from areas except deep shadows.
The rest of my accounts are from SW/W flows where the
vast bulk of snow falls in the tablelands (Great Dividing
Range) to the west of the Blue Mountains as Laurier has
descibed.
So for Blue Mountains snow, in general, look to the south
and follow your nose or look above for that very cold pool
of moist air.
Michael Scollay mailto:michael.scollay at telstra.com.au
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026
From: "Weather Co." [twc at theweather.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: radar and low cloud
Date: Tue, 15 Jun 1999 14:34:47 +1000
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Michael
It is worth remembering that the altitude of the radar echoes increases with
distance. This is due to both the angle of the radar beam and the curvature
of the earth. This means that at 240km range, the centre of the radar beam
is at about 10km above the earth. So the letterbox radar picking precip on
the Snowy mountains would be pointing at very high level cloud. The Wagga
radar which does not have such a good range would also struggle to provide
useful info over the Snowy's.
Also the beam width increases with distance. The 3.1deg beam of the WF44 BoM
radar is 16km wide at 300km. So at distance there are also resolution
problems. Basically, the precip has to cover a larger area and altitude to
give a decent return on the radar. I have seen TS picked up on Letterbox as
far south as Cooma and Bega but they have been large fully developed storms
to give returns.
All this should be considered in addition to your perfectly correct comments
about the difficulty resolving low level precip from topography. This is
very difficult even at close range. At large range impossible.
Mark
----- Original Message -----
From: Michael Scollay [michael.scollay at telstra.com.au]
To: [aussie-weather at world.std.com]
Sent: Tuesday, June 15, 1999 1:19 PM
Subject: Re: aus-wx: radar and low cloud
> Michael Thompson wrote:
> >
> > The radar is hopeless for picking up low cloud precip, and the
> > mountains only compound that, especially given that falls will
> > be heaviest just west of the great divide line. I went for a
> > drive yesterday to Mittagong, did not expect any snow, nor did
> > I get any, but saw enough cloud / showers to the far west to
> > suggest the radar was not picking it up.
> [snip]
>
> I agree, Michael. I've been watching the radar images over
> the Snowy Mountains also that seem to pick up mid and upper
> level precipitation but almost nothing nearer to ground
> level. This makes it difficult to correllate radar images
> with notable events. On many occasions, I've noted cloud
> in the area and wind direction / velocity to produce
> blizzard conditions with almost no show on the radar:-( I
> can only confirm the event with a phone call to our lodge
> at Perisher Valley or by watching the Blue Cow snow cam
> if it is not snowed in:-)
>
> Michael Scollay mailto:michael.scollay at telstra.com.au
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027
Date: Tue, 15 Jun 1999 15:00:03 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: Aussie Weather [aussie-weather at world.std.com]
Subject: aus-wx: U & V components of wind...
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Can anyone explain the geometry concerning the U and V components
of wind that is presented in model output such as MRF and AVN? I
would like to turn these parameters into a wind speed and direction.
Thanks in advance.
Michael Scollay mailto:michael.scollay at telstra.com.au
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028
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Date: Tue, 15 Jun 1999 15:10:01 +1000
To: aussie-weather at world.std.com
From: Matt Smith [disarm at braenet.com.au]
Subject: Re: aus-wx: Classic Lee Side Lenticular Cloud in Illawarra
Sender: aussie-weather-approval at world.std.com
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Hi Michael
Im sure this is what i saw over sydney all afternoon, one long cloud
stretching from the illawarra right up this way, the best way i can
describe it is very soft looking, with gentle ripples in it now and then
(im not to crash hot with cloud names), i even took a photo :)
Matt Smith
>A textbook Altostratus Lenticular cloud along the Illawarra coast at
>present. W winds at 20-25knots, cloud keeping temperature to 13C.
>
>
>Michael Thompson
>http://thunder.simplenet.com
>
>
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>
>
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029
Date: Tue, 15 Jun 1999 15:25:19 +1000
From: Anthony Cornelius [cyclone at rmitel.com.au]
X-Mailer: Mozilla 4.6 [en] (Win98; I)
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Michael,
I contacted ARL about this a while back, apparently their basically
pollution parameters.
Essentially, it gives you a 3-D perspective of how the air is
travelling, think of a 2D graph, with a X and Y axis. U is the X axis,
and V is the Y access. So, a U variable of +5 would look like +5 on a
graph...this is difficult to grasp, until I notced the "pressure
vertical velocity" when you plot that, you see at the bottom it is
labelled the "W wind component" tadah! This was the missing link when I
was trying to work out what they did, if we now go from a 2D to a 3D
graph, then the horizontal plane is X and Y (or U and V) and the
vertical movement is Z (or W!) So, if you know how to use the "pressure
vertical velocity" (which are your VV's) then just apply that, to the U
and V components of the wind, only in VV's - is rising, and + is
falling...but you can apply this to U and V, and you'll generally get
how the air is moving...
Difficult to understand, because it's difficult to explain...
Anthony Cornelius
Michael Scollay wrote:
>
> Can anyone explain the geometry concerning the U and V components
> of wind that is presented in model output such as MRF and AVN? I
> would like to turn these parameters into a wind speed and direction.
>
> Thanks in advance.
>
> Michael Scollay mailto:michael.scollay at telstra.com.au
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> -----------------------jacob at iinet.net.au------------------------------
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030
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Date: Tue, 15 Jun 1999 13:35:56 +0800
To: aussie-weather at world.std.com
From: Jacob [jacob at iinet.net.au]
Subject: aus-wx: Ahhh, a Perth winter, got to love it
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
ORECAST FOR THE PERTH METROPOLITAN AREA
Issued at 11:25am WST on Tuesday the 15th of June 1999 for the remainder of
today and Wednesday
FORECAST:
Showery periods, heavy at times, with the risk of a squally thunderstorm
tonight. Showers easing tomorrow. Freshening NW winds tending SW overnight.
TODAY'S TEMPERATURE: Maximum: 20
TOMORROW'S TEMPERATURES: Minimum: 11 Maximum: 18
TODAY'S UV INDEX: 3 [MODERATE]
The overnight minimum was 11.1 at 21:00 hours
Showers periods are forecast today, and will increase for a period tonight
with
the passage of a front. There may be a squally thunderstorm or two as the
front
moves though. Fresh NW winds will tend SW overnight. Only a few showers are
expected on Wednesday, mainly in the morning.
Another cold front is expected on Thursday night, with further showers and
thunderstorms likely, especially in the evening.
MEDIUM RANGE FORECAST FOR PERTH FOR:
Thursday : Occasional showers, late storm. Min: 09 Max: 20
Friday : Showers easing. Min: 10 Max: 17
Saturday : Fine. Min: 07 Max: 18
TREND FOR SUNDAY, MONDAY and TUESDAY:
Fine at first, but showers later in the period.Maxima: near 22.
Jacob
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031
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: aus-wx: Oberon - blowing snow
To: aussie-weather at world.std.com (Aussie Weather)
Date: Tue, 15 Jun 1999 16:03:17 +1000 (EST)
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Oberon was reporting blowing snow and dry-bulb of 1 at 1500. The maximum
was listed as 7, but I don't believe it.
Not often you see a report of blowing snow outside the alpine area.
(Of course, it may be that the observer is actually reporting falling
snow in high winds - they were reporting 56 km/h - as opposed to
blowing snow, when snow already on the ground is being blown
around).
As an aside, I once saw a Canadian forecast which issued a warning
of 'blowing snot'!
Blair Trewin
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032
Date: Tue, 15 Jun 1999 16:05:01 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
X-Mailer: Mozilla 4.5 [en] (X11; I; SunOS 5.5.1 sun4m)
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Thanks Anthony,
Your explanation is very straight forward and was what I had
hoped. I just wasn't sure how to interpret these figures when
representing something 2D in a 1D medium, namely English text,
to a different form e.g "kph" from "degrees".
Anthony Cornelius wrote on Tue, 15 Jun 1999 15:25:19 +1000:
>
> Hi Michael,
>
> I contacted ARL about this a while back, apparently their basically
> pollution parameters.
>
> Essentially, it gives you a 3-D perspective of how the air is
> travelling, think of a 2D graph, with a X and Y axis. U is the X axis,
> and V is the Y access. So, a U variable of +5 would look like +5 on a
> graph...this is difficult to grasp, until I notced the "pressure
> vertical velocity" when you plot that, you see at the bottom it is
> labelled the "W wind component" tadah! This was the missing link when I
> was trying to work out what they did, if we now go from a 2D to a 3D
> graph, then the horizontal plane is X and Y (or U and V) and the
> vertical movement is Z (or W!) So, if you know how to use the "pressure
> vertical velocity" (which are your VV's) then just apply that, to the U
> and V components of the wind, only in VV's - is rising, and + is
> falling...but you can apply this to U and V, and you'll generally get
> how the air is moving...
>
> Difficult to understand, because it's difficult to explain...
>
> Anthony Cornelius
>
> Michael Scollay wrote:
> >
> > Can anyone explain the geometry concerning the U and V components
> > of wind that is presented in model output such as MRF and AVN? I
> > would like to turn these parameters into a wind speed and direction.
> >
> > Thanks in advance.
> >
> > Michael Scollay mailto:michael.scollay at telstra.com.au
[snip]
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033
Date: Tue, 15 Jun 1999 16:20:32 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
X-Mailer: Mozilla 4.5 [en] (X11; I; SunOS 5.5.1 sun4m)
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Oberon - blowing snow
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Blair Trewin wrote:
>
> Oberon was reporting blowing snow and dry-bulb of 1 at 1500. The maximum
> was listed as 7, but I don't believe it.
Particularly when Katoomba reported 4 and Orange 3, one usually
gets a 0 or 1 at Oberon under these conditions. I wonder if the
observer was blowing on the thermometer to see if it was working
OK:-)
[snip]
Michael Scollay mailto:michael.scollay at telstra.com.au
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034
From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Funnel Cloud in NSW!!
Date: Tue, 15 Jun 1999 06:31:17 GMT
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On Tue, 15 Jun 1999 11:57:15 +1000 (EST), Blair Trewin
wrote:
>>
>> Hi all,
>>
>> If anyone has read this mornings (15/6) 9AM obs for NSW, they will notice
>> Quandialla (Southwest slopes) reported a Funnel Cloud, does anyone know
>> anymore about this??
>>
>> Andrew.
>>
>> --
>> Andrew Miskelly
>> Illawarra/Southern Tablelands, NSW.
>> amiskelly at ozemail.com.au
>I strongly suspect a coding error. (If you watch the observations for
>long enough you'll see plenty of snow reported at NT stations,
>duststorms in the middle of steady rain and such like).
>
I agree, Blair -- sort of. One of the most common "coding" errors is
really a typing error. The observer hits a sequence of keys one to the
right or one to the left of what was intended. Given that Quandialla's
past wx reported was 5 (drizzle) and 2 (mostly cloudy), I suspect that
the real present wx was 20 (recent drizzle) not 19 (funnel cloud).
If you haven't already done so, Andrew, check the "essential reading"
link just above the noteworthy synop and AWS reports for some clues in
error spotting. The problem with extracting reports by noteworthy
criteria is that you get noteworthy errors along with noteworthy
weather!
--
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/
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035
Date: Tue, 15 Jun 1999 16:43:55 +1000
From: Anthony Cornelius [cyclone at rmitel.com.au]
X-Mailer: Mozilla 4.6 [en] (Win98; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Michael,
U and V components are vectors - on the ARL site, the velocity is
measured in m/s, and as for the direction, the previous email explained
that.
Hope this helps!
Anthony
Michael Scollay wrote:
>
> Thanks Anthony,
>
> Your explanation is very straight forward and was what I had
> hoped. I just wasn't sure how to interpret these figures when
> representing something 2D in a 1D medium, namely English text,
> to a different form e.g "kph" from "degrees".
>
> Anthony Cornelius wrote on Tue, 15 Jun 1999 15:25:19 +1000:
> >
> > Hi Michael,
> >
> > I contacted ARL about this a while back, apparently their basically
> > pollution parameters.
> >
> > Essentially, it gives you a 3-D perspective of how the air is
> > travelling, think of a 2D graph, with a X and Y axis. U is the X axis,
> > and V is the Y access. So, a U variable of +5 would look like +5 on a
> > graph...this is difficult to grasp, until I notced the "pressure
> > vertical velocity" when you plot that, you see at the bottom it is
> > labelled the "W wind component" tadah! This was the missing link when I
> > was trying to work out what they did, if we now go from a 2D to a 3D
> > graph, then the horizontal plane is X and Y (or U and V) and the
> > vertical movement is Z (or W!) So, if you know how to use the "pressure
> > vertical velocity" (which are your VV's) then just apply that, to the U
> > and V components of the wind, only in VV's - is rising, and + is
> > falling...but you can apply this to U and V, and you'll generally get
> > how the air is moving...
> >
> > Difficult to understand, because it's difficult to explain...
> >
> > Anthony Cornelius
> >
> > Michael Scollay wrote:
> > >
> > > Can anyone explain the geometry concerning the U and V components
> > > of wind that is presented in model output such as MRF and AVN? I
> > > would like to turn these parameters into a wind speed and direction.
> > >
> > > Thanks in advance.
> > >
> > > Michael Scollay mailto:michael.scollay at telstra.com.au
> [snip]
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> -----------------------jacob at iinet.net.au------------------------------
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036
From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Oberon - blowing snow
Date: Tue, 15 Jun 1999 07:13:39 GMT
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On Tue, 15 Jun 1999 16:03:17 +1000 (EST), Blair Trewin
wrote:
>Oberon was reporting blowing snow and dry-bulb of 1 at 1500. The maximum
>was listed as 7, but I don't believe it.
>
Blair, there were no obs from Oberon after 9am Saturday, and the 1500
rainfall figures today were given as 10/0 and 10/48, which translate
as "10mm over more hours than the code allows me to express", and
"10mm over ...mmmm... 48 hours is the nearest this code allows me to
express." So I suspect the observer was away and that the max is for
Sat/Sun/Mon/Tues.
>Not often you see a report of blowing snow outside the alpine area.
>(Of course, it may be that the observer is actually reporting falling
>snow in high winds - they were reporting 56 km/h - as opposed to
>blowing snow, when snow already on the ground is being blown
>around).
>
No, the Oberon observer usually gets his snow obs right. I've just
come back from a trip to Blackheath shops, and I don't think the
56km/h figure is too far out -- Mt Boyce was reporting 46 at the same
time, and gusts to 74 earlier. Looking SW from Mt Boyce at around 1500
I could see a stream of quite respectable, white showers falling from
relatively shallow Cu moving from the SW in the southern Kanimbla
Valley (one of which seems to have clipped Katoomba which reported
intermittent snow from 1400). The direction of Oberon was clear. The
Oberon wx station, by the way, is about 5 or 6km south of Oberon town
on the Jenolan Caves road, and is about 1190m (the old Post Office
site in town was 1105m). It's on a moderately steep WNW-facing slope,
so the wind direction and speed can be a tad suspect. Mt Boyce AWS
winds also need to be treated with some caution as the station, which
is right opposite the truck checking station, is perched atop a steep
slope to the west, below which is an unbroken cliff line. It seldom
seems to report true westerlies -- in fact the direction it's been
reporting has been glued on 250 degrees for days, though the wind has
swung from WNW to W, then about 230 or 240 in the past few hours.
>As an aside, I once saw a Canadian forecast which issued a warning
>of 'blowing snot'!
>
That's better than scattered fosts and frogs, or isolated snofwalls.
--
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/
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037
From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: NPMOC JTWC increases GMSFULL resolution.
Date: Tue, 15 Jun 1999 07:19:13 GMT
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Sender: aussie-weather-approval at world.std.com
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On Tue, 15 Jun 1999 11:56:46 +1000, Michael Scollay
wrote:
>http://www.npmoc.navy.mil/products/jtwc/GMSFull_ir2.jpg
>
>resolution has increased image resolution from 1350x1350 to
>1700x1700 beginning with the image dated 199906142331 UTC.
>
Add the vis pix at
http://www.npmoc.navy.mil/products/jtwc/GMSFull_vis.jpg to that,
Michael. At about 450kb they're fairly big, but it's nice to have
detailed vis images hourly.
--
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/
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038
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Snowfalls
To: aussie-weather at world.std.com
Date: Tue, 15 Jun 1999 17:28:54 +1000 (EST)
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> > By the way, GASP has sub-516 air reaching Invercargill on Wednesday
> > night.
>
> NZ MetService doesn't seem to be forecasting very cold weather for
> Wednesday/Thursday, yet.
>
This outbreak has fizzled out - most models now seem to be bottoming
out around 524-528.
Blair Trewin
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039
X-Sender: astroman at chariot.net.au
X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1
Date: Tue, 15 Jun 1999 16:59:41 +0930
To: aussie-weather at world.std.com
From: Andrew Wall [astroman at chariot.net.au]
Subject: aus-wx: Hail Storm Damage report SA. (not comfirmed yet)
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi all,
Seeing as I was away for this event I have to rely on other peoples
observations and reports. One of these reports was very interesting.
A fellow worker reported to me today that on Sunday afternoon a brief but
deadly hail storm approached the suburb of Woodville (although the hail was
more widespread), with this came very strong gusts of wind (approx 40+
knts). The wind had enough power in it to either up-root or snap a fairly
large gum tree. With the gum falling it took out a powerline, which caused
a domino effect with the other poles on the street. All up 7 power poles
were bent and/or snapped. One of these poles housed a High voltage
transformer which was completly destroyed.
People in the area reported large blue sparks coming from many of the
downed poles.
The hail was said to be around 1.5cm in dia, but this is unconfirmed.
Photos of the downed poles and tree will come soon.
It took the emergency services a while to reach the damaged area, since
many houses in the neighbouring suburbs were without power due to the
downed poles. Once emergency services had seen the damage all power was cut
to many suburbs some of these suburbs were without power for well over 17
hours.
Unfortuantely I was not in Adelaide all weekend and missed the excitement.
Therefore I cannot give exact confirmed reports to this event.
Andrew Wall (VK5NAJ)
15 Elio Drv,
Paralowie 5108,
South Australia.
ph. (08) 82854590
S.A. / N.T. Co-ordinator for the ASWA Inc.
-------------------------------------------------------------------------------
S.A. Lightning Page - http://lightning.virtualave.net (I know it needs
updating)
ASWA Inc. Webpage - http://severeweather.asn.au
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040
Date: Tue, 15 Jun 1999 17:38:42 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
X-Mailer: Mozilla 4.5 [en] (X11; I; SunOS 5.5.1 sun4m)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: NPMOC JTWC increases GMSFULL resolution.
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Laurier Williams wrote:
>
> On Tue, 15 Jun 1999 11:56:46 +1000, Michael Scollay
> wrote:
>
> >http://www.npmoc.navy.mil/products/jtwc/GMSFull_ir2.jpg
> >
> >resolution has increased image resolution from 1350x1350 to
> >1700x1700 beginning with the image dated 199906142331 UTC.
> >
> Add the vis pix at
> http://www.npmoc.navy.mil/products/jtwc/GMSFull_vis.jpg to that,
> Michael. At about 450kb they're fairly big, but it's nice to have
> detailed vis images hourly.
Agreed Laurier. Great as a background "clock" on the monitor too.
I used to archive vis images, then water vapour, but settled on
IR2 because when animated, the complex circulation patterns at
multiple levels show up nicely for 24 hours a day. I could say
more about what animation reveals including stable and re-emerging
patterns of circulation that I suspect are related to the ebb and
flow of the Antartic Circumpolar Current. I wish there were more
resources on the 'net in relation to the ACC, then I might be
able to merge the IR2 global satpic animations with any under-
lying water current.
Michael Scollay mailto:michael.scollay at telstra.com.au
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041
Date: Tue, 15 Jun 1999 15:24:25 -0700
From: Lindsay [writer at lisp.com.au]
X-Mailer: Mozilla 3.0 (Win16; I)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Victoria's weekend - something of a fizzer (at low elevations anyway)
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Definately a fizzer for me,
Just had my new funky doodly camera stolen - with all those great snow
photos from Oberon! Aaaaaahhhh!
I bolted out the door at lunch time to pick up my partner in town
(Thought I'd save her the taxi ride home) and took my camera with me
figuring I may as well use up the last few photos taking some pics of
the western range up here, as it was snow capped. To cut a long story
short, I got distracted when I saw my partner in town, jumped out of the
car and forgot to bring my camera with me. I put the crook lock on the
car but didn't lock the doors as I thought - stupidly - there's nothing
in there to steal. Forgot about the camera though didn't I!
Sheeez.
Bad enough losing the camera - a $200 dollar, brand new one - but the
pics would have just been great, 27 of them; macro close ups/zoom shots
of snow more than a foot deep at Shooters Hill, snowman shots of the
Oberon local area/front yards and a shot of my mug in amongst the snow
covered pines taken by two young women I cajoled into photographing me,
not to mention heaps of other good shots. I can't believe it, just can't
believe it...
Oh yeah, light snow here at Blackheath at 3:00pm. To tell you the truth,
I don't care just now. I'm feeling depressed...
Lindsay Pearce
Blair Trewin wrote:
>
> I had my hopes high for seeing some of the white stuff this weekend,
> especially on Monday - I spent Sunday and Monday in Daylesford (650m)
> and the models suggested thicknesses in the upper 520s on Monday,
> which would have been enough for snow there, perhaps quite a lot of
> it.
>
> As it turned out there was none of any consequence - a few flakes
> around 11 on Monday morning but nothing else. Sunday, though, would
> have be a strong contender for the title of the worst conditions I've
> ever orienteered in - steady moderate rain, strong winds and
> temperatures around 3-4 degrees all day (now I know what it's like
> to run early- and late-season in Scandinavia!). Interestingly,
> Melbourne had virtually no rain on Sunday - the flow was NW and, while
> the northern slopes of the ranges had rain most of the day, Melbourne
> was in a rainshadow. (Even going 20km south from Daylesford made a
> big difference). Monday was just as cold, but nowhere near as wet -
> just occasional showers in a fresh SW flow.
>
>
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042
Date: Tue, 15 Jun 1999 17:49:11 -0700
From: Lindsay [writer at lisp.com.au]
X-Mailer: Mozilla 3.0 (Win16; I)
To: aussie-weather at world.std.com
Subject: aus-wx: Camera found!
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Well, no-one will believe this (refer to my earlier email about stolen
camera) Please excuse this one occasion of deviating from talking
directly about weather, as it is a weather story really anyway, sort of.
I left home late this arvo feeling pretty down about having my expensive
camera stolen (had a little argument with my partner etc)and all those
snow photos lost forever etc and was on my way to Lithgow to a pub or
Mac donalds or something and you just won't believe this but there was
this guy trailing me in an old truck/ute and after a minute or two I
started feeling a bit nervous and thought I must have failed to indicate
and he was into road rage or something. I turned off and headed down a
dirt road to a lookout and thought I'd lose him for sure but he kept on
following me! I felt like I was in that movie, "Duel". I was saying just
stay cool, be friendly etc and prepare to get bashed or something! WEll
it turns out this guy was sitting at a cafe in Blackheath with his mate
(at lunchtime) and saw me drop my camera (onto the middle of the road)
and they couldn't find me anywhere to return it to me and they weren't
exactly sure what car I got out off so they just hung onto my camera in
the meantime. Then, four hours later, on his way home from work, this
guy happens to see my car heading towards Lithgow, follows me, not
exactly sure that I was the person who owned the camera (he is a
mechanic and said he has a good memory for cars) but hoping I was, then
pulls me over and asks me if I had lost something? Turns out he didn't
have the camera but his mate skip did back at the pub at Blackheath. (we
were at that stage, just past Mt Victoria )
So...I go to Blackheath Pub and walk in on a bunch of about 25 guys
(Laurier, were you there?) and tell them about Aussie Weather and my
snow chasing expedition and asked for "Skip." After a few minutes of
deliberation,(most of them were pretty drunk) this red-eyed guy points
silently to this guy playing the pokies and that's Skip! He takes me to
his car, gives me back my camera, I shout him a beer or three and that's
it! How amazing is that! So , now I DO have all those great snow photos
to share with you guys. I asked him, "But why didn't you just keep it?
You coulda scored a really good camera."
He said,"But it wasn't mine and we saw you lose it on the road and felt
sorry for ya."
End of Story.
Hard to believe, I know, but I give you my word its true.
Lindsay Pearce
PS: if any Blue Mountains residents want a good honest builder or
mechanic to do work for them, just email me and I'll give you Skip's or
Phillip's number.
Bye the way, thick cloud coming in and snowing lightly here at
Blackheath at 5:50 pm.
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043
Date: Tue, 15 Jun 1999 18:10:53 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: Aussie Weather [aussie-weather at world.std.com]
Subject: aus-wx: AVN 18:00Z model run stuffed:-(
Sender: aussie-weather-approval at world.std.com
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My program that hits the ARL READY site to obtain AVN 191km data
had a problem. When investigating and probing this site manually;
http://www.arl.noaa.gov/ready-bin/getdscn.pl?product=NCEP+Operations&time=18
This is what the headline said:
SPECIAL NCEP DISCUSSION
CENTRAL OPERATIONS/NCEP/NWS/WASHINGTON DC
2225 UTC MON JUNE 14 1999
142200Z...NCEPS MAIN PROCESSOR HAD A HIT FROM A T STORM...THE 18Z
AVN RUN WILL BE DELAYED ALONG WITH RUC PROCESSING...WILL KEEP YOU
INFORMED...
WHITMORE/SDM/NCO/NCEP
Now that's what I call "severe weather":-)
Michael Scollay mailto:michael.scollay at telstra.com.au
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044
Date: Tue, 15 Jun 1999 18:14:54 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Victoria's weekend - something of a fizzer (at low
elevations anyway)
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Lindsay wrote:
>
> Definately a fizzer for me,
>
> Just had my new funky doodly camera stolen - with all those great snow
> photos from Oberon! Aaaaaahhhh!
All I can say is "Murphy was an optimist". Commiserations:-(
[snip]
Michael Scollay mailto:michael.scollay at telstra.com.au
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045
Date: Tue, 15 Jun 1999 18:19:08 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Camera found!
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Lindsay wrote:
>
> Well, no-one will believe this (refer to my earlier email about stolen
> camera) Please excuse this one occasion of deviating from talking
> directly about weather, as it is a weather story really anyway, sort of.
As I said before "Murphy is an optimist":-) Goes to show that you
must have some faith is human good nature.
[snip camera-recovery story]
Michael Scollay mailto:michael.scollay at telstra.com.au
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046
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Date: Tue, 15 Jun 1999 18:18:59 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jimmyd at ozemail.com.au]
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
As Anthony says, it gives you the chance to have a wind decribed going in
any 3D direction. In other words, it may be going NW but up at an angle of
30 degrees. This is the direction component. But u,v,w are ways of
describing wind speed and direction. This sort of mathematics is at least
2nd Year level. You need to look up any maths text at second year level. I
suppose my first year level maths text at uni also has a description.
Michael, I can also give you a lend of my dynamical meteorology book which
also discusses this...
Jimmy Deguara
At 15:25 15/06/99 +1000, you wrote:
>Hi Michael,
>
>I contacted ARL about this a while back, apparently their basically
>pollution parameters.
>
>Essentially, it gives you a 3-D perspective of how the air is
>travelling, think of a 2D graph, with a X and Y axis. U is the X axis,
>and V is the Y access. So, a U variable of +5 would look like +5 on a
>graph...this is difficult to grasp, until I notced the "pressure
>vertical velocity" when you plot that, you see at the bottom it is
>labelled the "W wind component" tadah! This was the missing link when I
>was trying to work out what they did, if we now go from a 2D to a 3D
>graph, then the horizontal plane is X and Y (or U and V) and the
>vertical movement is Z (or W!) So, if you know how to use the "pressure
>vertical velocity" (which are your VV's) then just apply that, to the U
>and V components of the wind, only in VV's - is rising, and + is
>falling...but you can apply this to U and V, and you'll generally get
>how the air is moving...
>
>Difficult to understand, because it's difficult to explain...
>
>Anthony Cornelius
>
>Michael Scollay wrote:
>>
>> Can anyone explain the geometry concerning the U and V components
>> of wind that is presented in model output such as MRF and AVN? I
>> would like to turn these parameters into a wind speed and direction.
>>
>> Thanks in advance.
>>
>> Michael Scollay mailto:michael.scollay at telstra.com.au
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>> -----------------------jacob at iinet.net.au------------------------------
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> -----------------------jacob at iinet.net.au------------------------------
>
----------------------------------------------------------------------------
---------------
Jimmy Deguara
Vice President ASWA
from Schofields, Sydney
e-mail: jimmyd at ozemail.com.au
homepage with Michael Bath
http://www.australiansevereweather.simplenet.com/
Australian Severe Weather Association home information page
http://www.severeweather.asn.au/
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047
Date: Tue, 15 Jun 1999 18:26:00 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
X-Mailer: Mozilla 4.5 [en] (X11; I; SunOS 5.5.1 sun4m)
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: AVN 18:00Z model run stuffed:-(
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Michael Scollay wrote on Tue, 15 Jun 1999 18:10:53 +1000:
>
> My program that hits the ARL READY site to obtain AVN 191km data
> had a problem. When investigating and probing this site manually;
>
> http://www.arl.noaa.gov/ready-bin/getdscn.pl?product=NCEP+Operations&time=18
>
> This is what the headline said:
>
> SPECIAL NCEP DISCUSSION
> CENTRAL OPERATIONS/NCEP/NWS/WASHINGTON DC
> 2225 UTC MON JUNE 14 1999
>
> 142200Z...NCEPS MAIN PROCESSOR HAD A HIT FROM A T STORM...THE 18Z
> AVN RUN WILL BE DELAYED ALONG WITH RUC PROCESSING...WILL KEEP YOU
> INFORMED...
>
> WHITMORE/SDM/NCO/NCEP
>
> Now that's what I call "severe weather":-)
Adding to that by scrolling down the page to:
SPECIAL NCEP DISCUSSION
CENTRAL OPERATIONS/NCEP/NWS/WASHINGTON DC
0800 UTC TUE JUNE 15 1999
150800Z...TRANSMISSIIN
I'll add "INTERRUPTED". It seems that in NCEP today "Murphy
was at work today":-) Stick to GASP/LAPS. Laurier! help!:-)
Michael Scollay mailto:michael.scollay at telstra.com.au
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048
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Date: Tue, 15 Jun 1999 18:26:16 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jimmyd at ozemail.com.au]
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Did you say ARL site. Now if that is the Australian Rugby League site, I
don't think you can string some of the players' brains together to make one
that would be able to handle this type of maths. Can you imagine the coach
saying, hit that ball at an angle of 30 degrees east northeast....
Just kidding guys he he Couldn't resist this one!!!!
Jimmy Deguara falling off his chair
At 16:43 15/06/99 +1000, you wrote:
>Hi Michael,
>
>U and V components are vectors - on the ARL site, the velocity is
>measured in m/s, and as for the direction, the previous email explained
>that.
>
>Hope this helps!
>
>Anthony
>
>Michael Scollay wrote:
>>
>> Thanks Anthony,
>>
>> Your explanation is very straight forward and was what I had
>> hoped. I just wasn't sure how to interpret these figures when
>> representing something 2D in a 1D medium, namely English text,
>> to a different form e.g "kph" from "degrees".
>>
>> Anthony Cornelius wrote on Tue, 15 Jun 1999 15:25:19 +1000:
>> >
>> > Hi Michael,
>> >
>> > I contacted ARL about this a while back, apparently their basically
>> > pollution parameters.
>> >
>> > Essentially, it gives you a 3-D perspective of how the air is
>> > travelling, think of a 2D graph, with a X and Y axis. U is the X axis,
>> > and V is the Y access. So, a U variable of +5 would look like +5 on a
>> > graph...this is difficult to grasp, until I notced the "pressure
>> > vertical velocity" when you plot that, you see at the bottom it is
>> > labelled the "W wind component" tadah! This was the missing link when I
>> > was trying to work out what they did, if we now go from a 2D to a 3D
>> > graph, then the horizontal plane is X and Y (or U and V) and the
>> > vertical movement is Z (or W!) So, if you know how to use the "pressure
>> > vertical velocity" (which are your VV's) then just apply that, to the U
>> > and V components of the wind, only in VV's - is rising, and + is
>> > falling...but you can apply this to U and V, and you'll generally get
>> > how the air is moving...
>> >
>> > Difficult to understand, because it's difficult to explain...
>> >
>> > Anthony Cornelius
>> >
>> > Michael Scollay wrote:
>> > >
>> > > Can anyone explain the geometry concerning the U and V components
>> > > of wind that is presented in model output such as MRF and AVN? I
>> > > would like to turn these parameters into a wind speed and direction.
>> > >
>> > > Thanks in advance.
>> > >
>> > > Michael Scollay mailto:michael.scollay at telstra.com.au
>> [snip]
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>> -----------------------jacob at iinet.net.au------------------------------
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> -----------------------jacob at iinet.net.au------------------------------
>
----------------------------------------------------------------------------
---------------
Jimmy Deguara
Vice President ASWA
from Schofields, Sydney
e-mail: jimmyd at ozemail.com.au
homepage with Michael Bath
http://www.australiansevereweather.simplenet.com/
Australian Severe Weather Association home information page
http://www.severeweather.asn.au/
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049
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Date: Tue, 15 Jun 1999 17:59:20 +0930
To: aussie-weather at world.std.com
From: Andrew Wall [astroman at chariot.net.au]
Subject: Re: aus-wx: Camera found!
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
WOW! what a stroy Lindsay. It's amazing how many honest people there are
really, thought they were a lost breed, like the people who broke into my
car a week or so ago..
Just goes to show don't judge a book by it's cover...
At 17:49 15/06/99 -0700, you wrote:
>Well, no-one will believe this (refer to my earlier email about stolen
>camera) Please excuse this one occasion of deviating from talking
>directly about weather, as it is a weather story really anyway, sort of.
>
>I left home late this arvo feeling pretty down about having my expensive
>camera stolen (had a little argument with my partner etc)and all those
>snow photos lost forever etc and was on my way to Lithgow to a pub or
>Mac donalds or something and you just won't believe this but there was
>this guy trailing me in an old truck/ute and after a minute or two I
>started feeling a bit nervous and thought I must have failed to indicate
>and he was into road rage or something. I turned off and headed down a
>dirt road to a lookout and thought I'd lose him for sure but he kept on
>following me! I felt like I was in that movie, "Duel". I was saying just
>stay cool, be friendly etc and prepare to get bashed or something! WEll
>it turns out this guy was sitting at a cafe in Blackheath with his mate
>(at lunchtime) and saw me drop my camera (onto the middle of the road)
>and they couldn't find me anywhere to return it to me and they weren't
>exactly sure what car I got out off so they just hung onto my camera in
>the meantime. Then, four hours later, on his way home from work, this
>guy happens to see my car heading towards Lithgow, follows me, not
>exactly sure that I was the person who owned the camera (he is a
>mechanic and said he has a good memory for cars) but hoping I was, then
>pulls me over and asks me if I had lost something? Turns out he didn't
>have the camera but his mate skip did back at the pub at Blackheath. (we
>were at that stage, just past Mt Victoria )
>
>So...I go to Blackheath Pub and walk in on a bunch of about 25 guys
>(Laurier, were you there?) and tell them about Aussie Weather and my
>snow chasing expedition and asked for "Skip." After a few minutes of
>deliberation,(most of them were pretty drunk) this red-eyed guy points
>silently to this guy playing the pokies and that's Skip! He takes me to
>his car, gives me back my camera, I shout him a beer or three and that's
>it! How amazing is that! So , now I DO have all those great snow photos
>to share with you guys. I asked him, "But why didn't you just keep it?
>You coulda scored a really good camera."
>
>He said,"But it wasn't mine and we saw you lose it on the road and felt
>sorry for ya."
>
>End of Story.
>
>Hard to believe, I know, but I give you my word its true.
>
>
>Lindsay Pearce
>PS: if any Blue Mountains residents want a good honest builder or
>mechanic to do work for them, just email me and I'll give you Skip's or
>Phillip's number.
>
>
>Bye the way, thick cloud coming in and snowing lightly here at
>Blackheath at 5:50 pm.
>
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> -----------------------jacob at iinet.net.au------------------------------
Andrew Wall (VK5NAJ)
15 Elio Drv,
Paralowie 5108,
South Australia.
ph. (08) 82854590
S.A. / N.T. Co-ordinator for the ASWA Inc.
-------------------------------------------------------------------------------
S.A. Lightning Page - http://lightning.virtualave.net (I know it needs
updating)
ASWA Inc. Webpage - http://severeweather.asn.au
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050
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Date: Tue, 15 Jun 1999 18:42:36 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jimmyd at ozemail.com.au]
Subject: aus-wx: Important!! July ASWA Annual General Meeting
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Jimmy here,
We have already made plans that July 31 would be a date for the ASWA Annual
General Meeting. Now, there will be proper invitiations going out
eventually but we are deciding whether the venue will have sufficient room
for the amount of people attending. Well that's the problem, how many think
they will attend at this stage?
Please send an e-mail to me personally so I can count on my fingers.... My
e-mail jimmyd at ozemail.com.au
Jimmy Deguara
has a black eye from a footy player!!!
----------------------------------------------------------------------------
---------------
Jimmy Deguara
Vice President ASWA
from Schofields, Sydney
e-mail: jimmyd at ozemail.com.au
homepage with Michael Bath
http://www.australiansevereweather.simplenet.com/
Australian Severe Weather Association home information page
http://www.severeweather.asn.au/
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051
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Date: Tue, 15 Jun 1999 18:24:19 +0930
To: aussie-weather at world.std.com
From: Andrew Wall [astroman at chariot.net.au]
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
LOL!!! Jimmy
At 18:26 15/06/99 +1000, you wrote:
>Did you say ARL site. Now if that is the Australian Rugby League site, I
>don't think you can string some of the players' brains together to make one
>that would be able to handle this type of maths. Can you imagine the coach
>saying, hit that ball at an angle of 30 degrees east northeast....
>
>
>
>
>
>Just kidding guys he he Couldn't resist this one!!!!
>
>Jimmy Deguara falling off his chair
>
>
>At 16:43 15/06/99 +1000, you wrote:
>>Hi Michael,
>>
>>U and V components are vectors - on the ARL site, the velocity is
>>measured in m/s, and as for the direction, the previous email explained
>>that.
>>
>>Hope this helps!
>>
>>Anthony
>>
>>Michael Scollay wrote:
>>>
>>> Thanks Anthony,
>>>
>>> Your explanation is very straight forward and was what I had
>>> hoped. I just wasn't sure how to interpret these figures when
>>> representing something 2D in a 1D medium, namely English text,
>>> to a different form e.g "kph" from "degrees".
>>>
>>> Anthony Cornelius wrote on Tue, 15 Jun 1999 15:25:19 +1000:
>>> >
>>> > Hi Michael,
>>> >
>>> > I contacted ARL about this a while back, apparently their basically
>>> > pollution parameters.
>>> >
>>> > Essentially, it gives you a 3-D perspective of how the air is
>>> > travelling, think of a 2D graph, with a X and Y axis. U is the X axis,
>>> > and V is the Y access. So, a U variable of +5 would look like +5 on a
>>> > graph...this is difficult to grasp, until I notced the "pressure
>>> > vertical velocity" when you plot that, you see at the bottom it is
>>> > labelled the "W wind component" tadah! This was the missing link when I
>>> > was trying to work out what they did, if we now go from a 2D to a 3D
>>> > graph, then the horizontal plane is X and Y (or U and V) and the
>>> > vertical movement is Z (or W!) So, if you know how to use the "pressure
>>> > vertical velocity" (which are your VV's) then just apply that, to the U
>>> > and V components of the wind, only in VV's - is rising, and + is
>>> > falling...but you can apply this to U and V, and you'll generally get
>>> > how the air is moving...
>>> >
>>> > Difficult to understand, because it's difficult to explain...
>>> >
>>> > Anthony Cornelius
>>> >
>>> > Michael Scollay wrote:
>>> > >
>>> > > Can anyone explain the geometry concerning the U and V components
>>> > > of wind that is presented in model output such as MRF and AVN? I
>>> > > would like to turn these parameters into a wind speed and direction.
>>> > >
>>> > > Thanks in advance.
>>> > >
>>> > > Michael Scollay mailto:michael.scollay at telstra.com.au
>>> [snip]
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>>
>----------------------------------------------------------------------------
>---------------
>Jimmy Deguara
>Vice President ASWA
>from Schofields, Sydney
>e-mail: jimmyd at ozemail.com.au
>homepage with Michael Bath
>
>http://www.australiansevereweather.simplenet.com/
>
>Australian Severe Weather Association home information page
>
>http://www.severeweather.asn.au/
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052
Date: Tue, 15 Jun 1999 19:01:03 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
X-Mailer: Mozilla 4.5 [en] (X11; I; SunOS 5.5.1 sun4m)
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
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Jimmy Deguara wrote:
>
> As Anthony says, it gives you the chance to have a wind decribed
> going in any 3D direction. In other words, it may be going NW but
> up at an angle of 30 degrees. This is the direction component.
> But u,v,w are ways of describing wind speed and direction. This
> sort of mathematics is at least 2nd Year level. You need to look
> up any maths text at second year level. I suppose my first year
> level maths text at uni also has a description.
>
> Michael, I can also give you a lend of my dynamical meteorology
> book which also discusses this...
Thanks for the tutorial, Jimmy:-) It's not often one has to
venture back to trigonometry in my game but it beats Maxwell's
equations any day! Somehow, I just can't seem to get my head
around those triple integrals with complex numbers anymore:-)
I kind of figured out what u, v & w were but was confused by
the results I was getting. You see when I take the MRF model
run for 99 06 14 00Z at a specific location (Katoomba = GRID
POINT: 39.32 43.68 LAT.:-33.72 LON.: 150.30), the following
data results for these particular components;
925 MB U-COMPONENT (KTS) 21.95
925 MB V-COMPONENT (KTS) -7.01
925 MB U-COMPONENT (M/S) -4.45
925 MB V-COMPONENT (M/S) 11.01
925 MB WIND SPEED (KTS) 23.08
I expected both U components to be in the same quadrant. They
don't seem to be. The M/S components are with respect to the
"grid" whatever that may be and I'm not sure what the KTS
components are with respect to. Why have a different grid?
When you take a look at the wind barbs in the gif image, it
make sense to a reality something like;
925 MB U-COMPONENT (KTS) -21.95
925 MB V-COMPONENT (KTS) 7.01
925 MB U-COMPONENT (M/S) 11.01
925 MB V-COMPONENT (M/S) -4.45
925 MB WIND SPEED (KTS) 23.08
when assuming u=x and v=y (to grid). That's what spawned my
question. Are there any further answers or have I got my
spatial perspective well and truely screwed up?
[snip Anthony's response and MichaelS's original ?]
Michael Scollay mailto:michael.scollay at telstra.com.au
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053
X-Sender: jimmyd at pop.ozemail.com.au
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Date: Tue, 15 Jun 1999 19:16:20 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jimmyd at ozemail.com.au]
Subject: Re: aus-wx: U & V components of wind...
Sender: aussie-weather-approval at world.std.com
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Hi Michael,
I haven't the time at the moment to look it all up as I have school reports
to do this week and also next week. So I hope either someone can help you
or you wait until the 26th June at the ASWA meeting. The book has the
coordinates strcutre explained which is used in this case.
Jimmy Deguara
At 19:01 15/06/99 +1000, you wrote:
>Jimmy Deguara wrote:
>>
>> As Anthony says, it gives you the chance to have a wind decribed
>> going in any 3D direction. In other words, it may be going NW but
>> up at an angle of 30 degrees. This is the direction component.
>> But u,v,w are ways of describing wind speed and direction. This
>> sort of mathematics is at least 2nd Year level. You need to look
>> up any maths text at second year level. I suppose my first year
>> level maths text at uni also has a description.
>>
>> Michael, I can also give you a lend of my dynamical meteorology
>> book which also discusses this...
>
>Thanks for the tutorial, Jimmy:-) It's not often one has to
>venture back to trigonometry in my game but it beats Maxwell's
>equations any day! Somehow, I just can't seem to get my head
>around those triple integrals with complex numbers anymore:-)
>
>I kind of figured out what u, v & w were but was confused by
>the results I was getting. You see when I take the MRF model
>run for 99 06 14 00Z at a specific location (Katoomba = GRID
>POINT: 39.32 43.68 LAT.:-33.72 LON.: 150.30), the following
>data results for these particular components;
>
>925 MB U-COMPONENT (KTS) 21.95
>925 MB V-COMPONENT (KTS) -7.01
>925 MB U-COMPONENT (M/S) -4.45
>925 MB V-COMPONENT (M/S) 11.01
>925 MB WIND SPEED (KTS) 23.08
>
>I expected both U components to be in the same quadrant. They
>don't seem to be. The M/S components are with respect to the
>"grid" whatever that may be and I'm not sure what the KTS
>components are with respect to. Why have a different grid?
>
>When you take a look at the wind barbs in the gif image, it
>make sense to a reality something like;
>
>925 MB U-COMPONENT (KTS) -21.95
>925 MB V-COMPONENT (KTS) 7.01
>925 MB U-COMPONENT (M/S) 11.01
>925 MB V-COMPONENT (M/S) -4.45
>925 MB WIND SPEED (KTS) 23.08
>
>when assuming u=x and v=y (to grid). That's what spawned my
>question. Are there any further answers or have I got my
>spatial perspective well and truely screwed up?
>
>[snip Anthony's response and MichaelS's original ?]
>
>Michael Scollay mailto:michael.scollay at telstra.com.au
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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> -----------------------jacob at iinet.net.au------------------------------
>
----------------------------------------------------------------------------
---------------
Jimmy Deguara
Vice President ASWA
from Schofields, Sydney
e-mail: jimmyd at ozemail.com.au
homepage with Michael Bath
http://www.australiansevereweather.simplenet.com/
Australian Severe Weather Association home information page
http://www.severeweather.asn.au/
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054
From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: aus-wx: Nice cold air vortex crossing the Snowies
Date: Tue, 15 Jun 1999 09:36:24 GMT
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If you animate today's IR satpix (the JCU colourised ones show it
quite well), there's a lovely little cold air vortex which develops
around Cape Otway on the 1800z image, then gets its act together as it
crosses the Snowy Mountains on the 03z image before blowing apart on
the 06z image. Also some interesting streaks of cloud being driven NE
out of the cloudmass under the Bight and W of Tasmania -- particularly
visible on the 00, 03 and 06z images.
The latest MesoLAPS actually *tightens* the SW gradient along the NSW
coast and tablelands tonight, with fairly wavy isobars, so I think
there's the possibility of some snowshowers for the tablelands tonight
as these small troughs sweep through. It's certainly cold enough --
0.9 and DP of -1.2 at Mt Boyce at 1700, while Braidwood was 3.5/-0.5.
The MesoLAPS also still has an area of high 700hPa relative humidity
west of the divide, though it's not clear to me from the 12-hourly
sequence of charts whether this moves across the divide at any stage.
--
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/
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055
Date: Tue, 15 Jun 1999 19:42:03 +1000
From: Anthony Cornelius [cyclone at rmitel.com.au]
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To: Australian Weather Mailing List [aussie-weather at world.std.com]
Subject: aus-wx: Brisbane Suburbs Could go Below 0 Tonight
Sender: aussie-weather-approval at world.std.com
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Hi all,
I would not be surprised if some of the Brisbane suburbs go below 0
tonight, as of 7:35pm, it was 10.8C, (that's already 0.1C below average
of the June min!) The DP is 2C at the AP, but it is -1C here, and I
would suspect even lower as you go further inland (I live in the eastern
suburbs).
I have told my mum to wake me up if there is frost (I have never seen
frost in Brisbane before) As grass temperatures would likely to be
below 0C.
Well - I'm about to walk the dog now (wearing 3 jumpers and 2 pairs of
long pants) I hope I make it back without getting frostbite!!
Anthony the whinging Brisbanite from a BITTERLYCOLD Brisbane!
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056
From: "Jane ONeill" [cadence at rubix.net.au]
To: "Aussie Weather" [aussie-weather at world.std.com]
Subject: aus-wx: T shirts - nag No3 (FINAL EDITION! - just on the offchance you've been away)
Date: Tue, 15 Jun 1999 19:55:49 +1000
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If you havent............
please email me at cadence at rubix.net.au (NOT the list)
with the following information:
1. polo neck or T-shirt? (you can have any colour so long as it is white
)
2. preference for logo on left breast or back?
3. quantity
4. sizes (S / M / L / XL / XXL / XXXL)
I'm going to put in the order on Wednesday16th June - so I'd like to hear
from you by tomorrow 16th June by 1pm - if I don't you will be Tshirtless
Jane ONeill
ASWA - Victoria
============================================================
Jane ONeill Bayswater Melbourne cadence at rubix.net.au
http://www.rubix.net.au/~cadence
http://www.severeweather.asn.au/
============================================================
============================================================
Jane ONeill Bayswater Melbourne cadence at rubix.net.au
http://www.rubix.net.au/~cadence
http://www.severeweather.asn.au/
============================================================
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057
From: wbc at ozemail.com.au (Laurier Williams)
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Camera found!
Date: Tue, 15 Jun 1999 09:55:49 GMT
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On Tue, 15 Jun 1999 17:49:11 -0700, Lindsay
wrote:
>So...I go to Blackheath Pub and walk in on a bunch of about 25 guys
>(Laurier, were you there?) and tell them about Aussie Weather and my
Nope. But to add to the coincidences, I have a good motorcycling mate
whose nick is Skip -- he keeps running into kangaroos. But he's not a
builder.
Glad to hear you had a happy ending, Lindsay.
--
Laurier Williams
Australian Weather Links and News
http://www.ozemail.com.au/~wbc/
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058
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Date: Tue, 15 Jun 1999 20:02:57 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jimmyd at ozemail.com.au]
Subject: aus-wx: Camera found!!
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Jimmy here
I wish I had a similar story to tell of my camera that got stolen last
year. It had the 13th November 1998 severe hailstorm pics in it. But that
scum bag who stole it couldn't care less.
However, I am glad you Lindsay have had a great story come out of it. I am
also glad there were others also taking pictures of the 13th November 1998
severe hailstorm. Another good thing that has come out from ASWA.
Jimmy Deguara
----------------------------------------------------------------------------
---------------
Jimmy Deguara
Vice President ASWA
from Schofields, Sydney
e-mail: jimmyd at ozemail.com.au
homepage with Michael Bath
http://www.australiansevereweather.simplenet.com/
Australian Severe Weather Association home information page
http://www.severeweather.asn.au/
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059
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: Classic Lee Side Lenticular Cloud in Illawarra
Date: Tue, 15 Jun 1999 20:05:38 +1000
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It would have been the same, from a distance you would have been able to see
the lenticular shape, but its hard when you are under it. I have even seen
light precipitation from one of these many years ago, but that is a rarity.
Michael
>
> Im sure this is what i saw over sydney all afternoon, one long cloud
> stretching from the illawarra right up this way, the best way i can
> describe it is very soft looking, with gentle ripples in it now and then
> (im not to crash hot with cloud names), i even took a photo :)
>
> Matt Smith
>
> >A textbook Altostratus Lenticular cloud along the Illawarra coast at
> >present. W winds at 20-25knots, cloud keeping temperature to 13C.
> >
> >
> >Michael Thompson
> >http://thunder.simplenet.com
> >
> >
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> > -----------------------jacob at iinet.net.au------------------------------
> >
> >
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060
Date: Tue, 15 Jun 1999 20:56:34 +1000
From: Keith Barnett [weather at ozemail.com.au]
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Oberon - blowing snow
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Or soppy cheese and fawning mogs and shattered scours...(ah, the joy of
Spoonerisms...)
Laurier Williams wrote:
>
> On Tue, 15 Jun 1999 16:03:17 +1000 (EST), Blair Trewin
> wrote:
>
> >Oberon was reporting blowing snow and dry-bulb of 1 at 1500. The maximum
> >was listed as 7, but I don't believe it.
> >
> Blair, there were no obs from Oberon after 9am Saturday, and the 1500
> rainfall figures today were given as 10/0 and 10/48, which translate
> as "10mm over more hours than the code allows me to express", and
> "10mm over ...mmmm... 48 hours is the nearest this code allows me to
> express." So I suspect the observer was away and that the max is for
> Sat/Sun/Mon/Tues.
>
> >Not often you see a report of blowing snow outside the alpine area.
> >(Of course, it may be that the observer is actually reporting falling
> >snow in high winds - they were reporting 56 km/h - as opposed to
> >blowing snow, when snow already on the ground is being blown
> >around).
> >
> No, the Oberon observer usually gets his snow obs right. I've just
> come back from a trip to Blackheath shops, and I don't think the
> 56km/h figure is too far out -- Mt Boyce was reporting 46 at the same
> time, and gusts to 74 earlier. Looking SW from Mt Boyce at around 1500
> I could see a stream of quite respectable, white showers falling from
> relatively shallow Cu moving from the SW in the southern Kanimbla
> Valley (one of which seems to have clipped Katoomba which reported
> intermittent snow from 1400). The direction of Oberon was clear. The
> Oberon wx station, by the way, is about 5 or 6km south of Oberon town
> on the Jenolan Caves road, and is about 1190m (the old Post Office
> site in town was 1105m). It's on a moderately steep WNW-facing slope,
> so the wind direction and speed can be a tad suspect. Mt Boyce AWS
> winds also need to be treated with some caution as the station, which
> is right opposite the truck checking station, is perched atop a steep
> slope to the west, below which is an unbroken cliff line. It seldom
> seems to report true westerlies -- in fact the direction it's been
> reporting has been glued on 250 degrees for days, though the wind has
> swung from WNW to W, then about 230 or 240 in the past few hours.
>
> >As an aside, I once saw a Canadian forecast which issued a warning
> >of 'blowing snot'!
> >
> That's better than scattered fosts and frogs, or isolated snofwalls.
>
> --
> Laurier Williams
> Australian Weather Links and News
> http://www.ozemail.com.au/~wbc/
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061
Date: Tue, 15 Jun 1999 09:47:43 +0100
To: aussie-weather at world.std.com
From: Norman Lynagh [lynagh at dial.pipex.com]
Subject: Re: aus-wx: Oberon - blowing snow
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In message <199906150603.QAA00812 at mullara.met.unimelb.EDU.AU>, Blair
Trewin writes
>
>As an aside, I once saw a Canadian forecast which issued a warning
>of 'blowing snot'!
>
>Blair Trewin
It's actually not a bad forecast for a 40 knot wind and a temperature of
minus 10!
Norman.
=====================================================================
Norman Lynagh Weather Consultancy Tel: +44 (0)1494 870220
18 Kings Road Fax: +44 (0)1494 870221
Chalfont St. Giles E-mail: lynagh at dial.pipex.com
Buckinghamshire HP8 4HS
England
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062
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Date: Tue, 15 Jun 1999 22:28:29 +1000
To: aussie-weather at world.std.com
From: Ben Munro [benjamin at biosys.net]
Subject: Re: aus-wx: Snow
Sender: aussie-weather-approval at world.std.com
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At 14:04 14-06-99 -0700, Lindsay wrote:
>Well, what a day in Oberon and South of Oberon today, Monday the 14th.
I was in same region on monday afternoon too.
I had spent the long weekend hiking in in the kowmung river area, to the
south east of the snowy area. On sunday night I was camped by the Kowmung
river, there wasn't a cloud in the sky, and there was light rain was
falling. I later found out that this was caused by snow being blown
horizontally from the west by the high winds, then melting and falling down
into the valley. The wind got stronger during the night, and rain continued
to fall lightly.
On monday morning we had a 600-700m vertical climb out of the valley, the
wind got stronger and the temperature dropped as we climbed higher, up to
almost 1000m. The temperature was roughly 4 degrees, from a key ring
thermometer, so only roughly, and the winds were gusting to perhaps
50knots. By then I could see that snow was pretty likely, from the low
clouds up the valley to the west.
As we drove west, it wasn't long before we started seeing snow on the
ground. Then wet snow started to fall, and as we drove on, the snow kept
getting deeper and deeper. about 15cm deep covering quite a large area, 1
foot and deeper drifts in many places. The cover was best along the mount
werong road (dirt road), and the shooter's hill area.
Around shooter's hill the flakes were quite big, almost a centimetre wide,
and when we stopped, the snow was really light and dry. The snow didn't
really feel very cold, because of the low amount of liquid in it, it was
too dry to transfer the heat.
All up, it took about one and a half hours to drive through the snow
covered area, and snow was falling for almost all the 2 hours it took to
drive to Lithgow. There was a brief fall of wet/snow/sleet at the top of
the hill to the east of Lithgow, but the sky was clear by the time we
reached Bell and stayed clear all the way back to Sydney.
It seems as though it is still snowing in that region, so there could be
quite a large buildup of snow cover. You haven't had a nother chance to get
out there have you Lindsay?
Ben Munro
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Date: Tue, 15 Jun 1999 23:14:16 +1000
To: aussie-weather at world.std.com
From: Ben Munro [benjamin at biosys.net]
Subject: Re: aus-wx: Oberon - blowing snow
Sender: aussie-weather-approval at world.std.com
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It was blowing snow, there was snow being blown from drifts and cornices,
across the road. Of course, the falling snow wasn't falling, it was being
blown horizontally too.
Ben Munro
At 16:03 15-06-99 +1000, Blair Trewin wrote:
>Oberon was reporting blowing snow and dry-bulb of 1 at 1500. The maximum
>was listed as 7, but I don't believe it.
>
>Not often you see a report of blowing snow outside the alpine area.
>(Of course, it may be that the observer is actually reporting falling
>snow in high winds - they were reporting 56 km/h - as opposed to
>blowing snow, when snow already on the ground is being blown
>around).
>
>As an aside, I once saw a Canadian forecast which issued a warning
>of 'blowing snot'!
>
>Blair Trewin
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Date: Tue, 15 Jun 1999 23:42:02 +1000
To: aussie-weather at world.std.com
From: Ben Munro [benjamin at biosys.net]
Subject: Re: aus-wx: Oberon - blowing snow
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Reply-To: aussie-weather at world.std.com
At 07:13 15-06-99 GMT, Laurier Williams wrote:
>Mt Boyce AWS
>winds also need to be treated with some caution as the station, which
>is right opposite the truck checking station, is perched atop a steep
>slope to the west, below which is an unbroken cliff line. It seldom
>seems to report true westerlies -- in fact the direction it's been
>reporting has been glued on 250 degrees for days, though the wind has
>swung from WNW to W, then about 230 or 240 in the past few hours.
The Mount Boyce AWS is opposite the truck checking station? do you mean the
weighing station at Bell? That's quite a distance from mount boyce.
Ben Munro
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| Document: 990615.htm
Updated: 27 June 1999 |
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