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Australian Weather Mailing List Archives: Wednesday, 24 March 1999 |
From Subject
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001 steve baynham [bayns at nor.com.au] Yea Storm Chase report 27/1/99
002 Lindsay [writer at lisp.com.au] Re: aussie-weather: Change
003 "McDonald" [mcdonald at one.net.au] Warm fronts.
004 Blair Trewin [blair at met.Unimelb.EDU.AU] Eyre rainfall
005 Phil Bagust [paisley at cobweb.com.au] Vance's remnants - SA
006 John Woodbridge [jrw at pixelcom.net] Coldest since Dec 4th LY
007 Chris Maunder [cmaunder at dynamite.com.au] Coldest since Dec 4th LY
008 John Woodbridge [jrw at pixelcom.net] Vance, Wind speed & Onslow
009 Blair Trewin [blair at met.Unimelb.EDU.AU] Eyre rainfall
010 Blair Trewin [blair at met.Unimelb.EDU.AU] Vance, Wind speed & Onslow
011 steve baynham [bayns at nor.com.au] lightning photos 22nd march
012 "Chris Gribben" [chrisgribben at hotmail.com] lightning photos 22nd march
013 John Woodbridge [jrw at pixelcom.net] lightning photos 22nd march
014 "Ira Fehlberg" [jra at upnaway.com] Re: Aussie weather ppl footy tipping comp! Prizes too!! & it
015 Michael Fewings [mike at strikeone.com.au] gold coast lightning display
016 Jimmy Deguara [jimmyd at ozemail.com.au] Re: Aussie weather ppl footy tipping comp! Prizes
017 "Michael Thompson" [michaelt at ozemail.com.au] ASWA vantage points database!
018 "Jane ONeill" [cadence at rubix.net.au] Re: footy tipping comp! / Melb weather
019 John Woodbridge [jrw at pixelcom.net] Vance, Wind speed & Onslow
020 Keith Barnett [weather at ozemail.com.au] Vance, Wind speed & Onslow
021 "Terry Bishop" [dymprog at mpx.com.au] Re: aussie-weather: Change
022 "Paul Graham" [v_notch at hotmail.com] Re: interesting satellite...
023 "James Chambers" [jamestorm at OzeMail.Com.au] Severe Tropical Cyclones in Qld
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001
X-Sender: bayns at nornet.nor.com.au
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Date: Wed, 24 Mar 1999 00:32:36 +1000
To: aussie-weather at world.std.com
From: steve baynham [bayns at nor.com.au]
Subject: Re: aus-wx: Yea Storm Chase report 27/1/99
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
jane,
when i scan my images in, i scan at 100dpi and save as jpg, and that takes
a standard photo size to take up most of the screen size and yet only use
23k! am not sure what system you are currenlty using, but thats mine:)
stevoooo
At 09:41 PM 3/23/99 +1100, you wrote:
>Yea Storm Chase report 27/1/99 has been updated tonight with the written
>report and two extra photos of the Yea storm going up. (the page loads
>slowly - so read on while the images are loading - explanation of why is
>below the link)
>
>http://www.rubix.net.au/~cadence/27_1_99.htm
>
>This is now where I plead loudly for help from those of you with rather more
>than my *very* novice level of experience with images - how do I get the
>size of the images (and therefore the upload time) down to a manageable
>level without sacrificing the quality???????
>
>Many thanks in anticipation,
>
>Jane
>Bayswater, Melbourne
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002
Date: Tue, 23 Mar 1999 09:38:57 -0800
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: Re: aussie-weather: Change
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
G'day Terry,
12mm of rain in blackheath?
On what day? I had 2mm for the 24hrs to 9am for Monday 22nd. I haven't
cheked with my neighbour but normally his measurements are close to
mine.
Terry Bishop wrote:
>
> Hi Lindsay,
>
> I see the official fall for blackheath till 9.00am is 12mm
>
> Terry.
>
> mailto:dymprog at mpx.com.au
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003
From: "McDonald" [mcdonald at one.net.au]
To: [aussie-weather at world.std.com]
Subject: aus-wx: Warm fronts.
Date: Wed, 24 Mar 1999 08:59:15 +1100
X-Mailer: Microsoft Internet Mail 4.70.1161
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Morning all,
Haven't checked mail or anything for a few days but i did notice this
morning on the MSLP analysis chart from the BOM that there were (was?) two
(2) warm fronts. I have the image saved so if you don't get to see it I
can do something with it (i don't know what but i'll think of something).
Hope Jason was OK and had fun.
Andrew McDonald
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004
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Eyre rainfall
To: aussie-weather at world.std.com
Date: Wed, 24 Mar 1999 09:30:36 +1100 (EST)
X-Mailer: ELM [version 2.4 PL23]
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>
>
> The 3pm observations for WA has Eyre recording 162mm of rain for the 6
> hours to 3pm. Although obviously well short of overall Australian
> rainfall records, I'd be surprised if this isn't a record for this
> station.
It certainly would be - the record is 82mm, and is only three days old!
A quick glance at the Nullarbor stations suggests that most of them
have records in the 70-100 range, although Eucla has had 115.
I'm a little sceptical of this obs though - there was nothing else like
it, and the location of the road closures (west of Balladonia) suggests
that the heaviest rain may have been further west. I suspect there
might have been a decimal point missing. Will be interested to see the
0900 obs though.
Blair
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005
X-Sender: paisley at mail.cobweb.com.au
Date: Wed, 24 Mar 1999 09:30:24 +0930
To: aussie-weather at world.std.com
From: Phil Bagust [paisley at cobweb.com.au]
Subject: Re: aus-wx: Vance's remnants - SA
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi all,
Well, its quite windy (northerly) here in Adelaide this morning. A heavy
pall of mid level cloud, 21degrees and lots of dust in the air. I just
heard on the radio that a big storm just hit Port Lincoln, ~250kms west of
here. Vance has not breathed his last!
Phil 'Paisley' Bagust
paisley at cobweb.com.au
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006
From: John Woodbridge [jrw at pixelcom.net]
To: "aussie-weather at world.std.com" [aussie-weather at world.std.com]
Subject: aus-wx: Coldest since Dec 4th LY
Date: Wed, 24 Mar 1999 10:16:07 +1000
Organization: Pixel Components
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Mornin' All,
Well it was an almost chilly 16.5C this morning at Mt. Crosby under a
completely clear sky, that's the coldest min since Dec 4th last year (15C).
Since then it has clouded over and we are once again into the SEaster's
with drizzle patches.
Regards,
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007
X-Sender: cmaunder at mail.dynamite.com.au
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Date: Wed, 24 Mar 1999 12:14:08 +1100
To: aussie-weather at world.std.com
From: Chris Maunder [cmaunder at dynamite.com.au]
Subject: Re: aus-wx: Coldest since Dec 4th LY
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
According to my thermometer it's still not reached 16C yet - and it's
midday!
16.5C is almost hot!
Chris in chilly Canberra
At 11:16 24/03/99 , you wrote:
>Mornin' All,
>
>Well it was an almost chilly 16.5C this morning at Mt. Crosby under a
>completely clear sky, that's the coldest min since Dec 4th last year (15C).
> Since then it has clouded over and we are once again into the SEaster's
>with drizzle patches.
>
>Regards,
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008
From: John Woodbridge [jrw at pixelcom.net]
To: "aussie-weather at world.std.com" [aussie-weather at world.std.com]
Subject: aus-wx: Vance, Wind speed & Onslow
Date: Wed, 24 Mar 1999 12:25:52 +1000
Organization: Pixel Components
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Hi all,
According to the BoM we have an officially recorded max windgust from Vance
of 267km/hr (a new Australian mainland record) at Learmonth, 38km south of
Exmouth. How anything can survive that I don't know, but... At the time,
Vance was moving south at approx. 40km/hr and I understand that Exmouth and
Learmonth were to the West of the Eye, therefore, one could postulate a max
wind speed on the East side of the Eye approaching 340km/hr. From which
comes the question... What happened in Onslow, which was on the East
side??
I can't get over the speed at which it has ripped crossed W.A. Monday
lunchtime it was crossing the coast near Exmouth. Now just 48 hours later,
it's near Adelaide..
I reckon for Australia, this must be the storm of the decade if not storm
of the century.
Regards.
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009
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Eyre rainfall
To: aussie-weather at world.std.com
Date: Wed, 24 Mar 1999 14:07:45 +1100 (EST)
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>
>
> The 3pm observations for WA has Eyre recording 162mm of rain for the 6
> hours to 3pm. Although obviously well short of overall Australian
> rainfall records, I'd be surprised if this isn't a record for this
> station.
This was incorrect - the 0900 figure came in as 58mm, which seems much
more consistent with other observations. Norseman was top with 67.
Blair Trewin
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010
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Vance, Wind speed & Onslow
To: aussie-weather at world.std.com
Date: Wed, 24 Mar 1999 14:06:01 +1100 (EST)
X-Mailer: ELM [version 2.4 PL23]
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>
> Hi all,
>
> According to the BoM we have an officially recorded max windgust from Vance
> of 267km/hr (a new Australian mainland record) at Learmonth, 38km south of
> Exmouth. How anything can survive that I don't know, but... At the time,
> Vance was moving south at approx. 40km/hr and I understand that Exmouth and
> Learmonth were to the West of the Eye, therefore, one could postulate a max
> wind speed on the East side of the Eye approaching 340km/hr. From which
> comes the question... What happened in Onslow, which was on the East
> side??
To be pedantic, it was an equal record for 'Australia' (including
offshore islands, but not Antarctica) and an outright record for the
mainland. The other 267 km/h obs was in Cyclone Olivia (1997?) at an
island off the coast.
I haven't seen the Onslow obs but presume we would have heard about it
if they topped 267. The eye didn't get quite as close to Onslow as
it did to Learmonth, which probably makes up for Onslow being on the
east side - Learmonth was reporting the stronger winds of the two
before the communications went on the blink.
As mentioned in an earlier mail, one of the BMRC people has various
instruments on one of the NW Cape radio masts at differing heights.
He was on the first plane there! I'll be interested to see what comes
out of it - it will probably be the most comprehensive vertical
profile ever obtained of the lower levels of a severe TC if the
instruments worked.
Parts of Exmouth were supposedly built by the US military to withstand
a nuclear attack, so it's not surprising that it handled a mere
cyclone :-)
It's quite common for cyclones to accelerate dramatically once they
get overland south of the tropics. Bobby behaved in much the same
way.
> I can't get over the speed at which it has ripped crossed W.A. Monday
> lunchtime it was crossing the coast near Exmouth. Now just 48 hours later,
> it's near Adelaide..
>
> I reckon for Australia, this must be the storm of the decade if not storm
> of the century.
Decade, yes - Bobby is the other serious contender (a weaker storm, but
more loss of life, probably more damage too, all things considered).
Hard to go past Tracy, though - to say nothing of the 1918 Mackay
storm, Althea (1971) and quite a few others - for the storm of the
century.
Blair Trewin
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011
X-Sender: bayns at nornet.nor.com.au
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Date: Wed, 24 Mar 1999 13:22:11 +1000
To: aussie-weather at world.std.com
From: steve baynham [bayns at nor.com.au]
Subject: aus-wx: lightning photos 22nd march
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
hey,
here yas go
http://www.angelfire.com/ok/gany/images/2203991.jpg
http://www.angelfire.com/ok/gany/images/2203992.jpg
http://www.angelfire.com/ok/gany/images/2203993.jpg
http://www.angelfire.com/ok/gany/images/2203994.jpg
http://www.angelfire.com/ok/gany/images/2203995.jpg
http://www.angelfire.com/ok/gany/images/2203996.jpg
http://www.angelfire.com/ok/gany/images/2203997.jpg
steve from gold coast
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012
X-Originating-Ip: [203.108.181.62]
From: "Chris Gribben" [chrisgribben at hotmail.com]
To: aussie-weather at world.std.com
Subject: Re: aus-wx: lightning photos 22nd march
Date: Tue, 23 Mar 1999 19:49:55 PST
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
A couple of great shots, I particularly like the third one with the nice
lowering. Not a shabby shelf cloud/gust front either
>From: steve baynham
>Reply-To: aussie-weather at world.std.com
>To: aussie-weather at world.std.com
>Subject: aus-wx: lightning photos 22nd march
>Date: Wed, 24 Mar 1999 13:22:11 +1000
>
>hey,
>here yas go
>http://www.angelfire.com/ok/gany/images/2203991.jpg
>http://www.angelfire.com/ok/gany/images/2203992.jpg
>http://www.angelfire.com/ok/gany/images/2203993.jpg
>http://www.angelfire.com/ok/gany/images/2203994.jpg
>http://www.angelfire.com/ok/gany/images/2203995.jpg
>http://www.angelfire.com/ok/gany/images/2203996.jpg
>http://www.angelfire.com/ok/gany/images/2203997.jpg
>
>steve from gold coast
--------------------------------------------------------------------------------------
013
From: John Woodbridge [jrw at pixelcom.net]
To: "'aussie-weather at world.std.com'" [aussie-weather at world.std.com]
Subject: RE: aus-wx: lightning photos 22nd march
Date: Wed, 24 Mar 1999 13:56:19 +1000
Organization: Pixel Components
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Hi steve,
Re 2203993 & 2203997, I guess it's only a cloud tag, but it sure looks impressive.
Regards,
-----Original Message-----
hey,
here yas go
http://www.angelfire.com/ok/gany/images/2203991.jpg
http://www.angelfire.com/ok/gany/images/2203992.jpg
http://www.angelfire.com/ok/gany/images/2203993.jpg
http://www.angelfire.com/ok/gany/images/2203994.jpg
http://www.angelfire.com/ok/gany/images/2203995.jpg
http://www.angelfire.com/ok/gany/images/2203996.jpg
http://www.angelfire.com/ok/gany/images/2203997.jpg
steve from gold coast
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014
From: "Ira Fehlberg" [jra at upnaway.com]
To: [aussie-weather at world.std.com]
Subject: aus-wx: Re: Aussie weather ppl footy tipping comp! Prizes too!! & its free!!
Date: Wed, 24 Mar 1999 12:10:19 +0800
X-Mailer: Microsoft Internet Mail 4.70.1161
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On the tipping comp I made one mistake. The round starts on thursday night.
I hope you all join in, even you rugby states as the Tornado poster prizes
are cool!
Check em out at http://www.tornadoproject.com/products/postpage.htm#top
You dont have to follow the Afl or know alot about it.
Ira Fehlberg
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015
Date: Wed, 24 Mar 1999 13:17:32 +0800
From: Michael Fewings [mike at strikeone.com.au]
Organization: Strike One Lightning Photos
X-Mailer: Mozilla 4.5 [en] (Win95; I)
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: gold coast lightning display
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi all,
steve baynham wrote:
> also saw some freaky stuff i've never
> seen b4! blue lightning!!! they weren't actual strikes that i saw but just
> very bright flourescent blueish colour!! anyone like to fill me in??
There are a few things this could have been. If you were looking at all out the top
of the storm then it could have been a Blue Jet. Unless you were able to see blue
sky above the storm then this is unlikely to be the case.
As Anthony Cornelius detailed in a previous post. Lightning colours are effected by
different moisture levels in the air. Little evidence is around that this ever
causes lightning to go a blue colour. More often high levels of moisture block out
the higher end of the spectrum hence making the lighting strike go orange or
yellow. Sometimes ice within the storm can affect the colour of lightning but this
is again unlikely to make the spectrum analysis of the strike shift upwards to the
blue.
I can not pin the reason down with your question Steve. I have caught such a
colour in one of my photos and have consequently gone to great lengths so discover
the reason for it. I have been told by many researchers of "Sprites and Jets" that
it is most probably a Jet. And others have said that it is likely the breakdown of
various gasses in the upper atmosphere. All of these ideas have merit but till
this day it is still an unknown event.
The url to my photo is
http://strikeone.com.au/blue/blue.htm
Some links to sites that detail "Sprites and Jets" can be found in my links page
http://strikeone.com.au/links/links.html#sprites.
--
Michael Fewings
Strike One Lightning Photos
http://strikeone.com.au
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016
X-Sender: jimmyd at pop.ozemail.com.au
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Date: Wed, 24 Mar 1999 16:44:42 +1100
To: aussie-weather at world.std.com
From: Jimmy Deguara [jimmyd at ozemail.com.au]
Subject: Re: aus-wx: Re: Aussie weather ppl footy tipping comp! Prizes
too!! & its free!!
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Somebody will have to do footy competition for Sydney and Brisbane as it is
a different code!!!
Jimmy Deguara
]
At 20:18 23/03/99 +0800, you wrote:
> I thought for fun that I'd run a footy tipping comp for any weather
>people ( or anyone else ) who love footy as much as me!! I encourage all to
>join as it will be heaps of fun through the year ( we can all brag on irc)
>and I have some great prizes!! These are courtesy of my friend Tom Grazulis
>at The Tornado Project online. I will set up a Html page with the scores
>each week and my picks will be on there each week so everyone can see them.
>This is the first and only time that I will post this letter as I've be
>going on about irrelevent mail on the list, I think you'll agree that this
>is an exception. So here's the low down, and rules
>
>1) Your picks must be recieved by me, by email no later than on friday
>5:00pm est. A copy of the fixtures for each week can be seen at the AFL
>site at http://www.afl.com.au/matches/default_0.htm
>
>2) The picks must be sent to my personal email, jra at upnaway.com DO NOT SEND
>THEM TO THE WEATHER MAILING LIST!!. send them to me
>
>3) If your picks are late or not in at all you will get all the away teams
>for that round.
>
>4) When you send your picks send the names of the teams you think will win
>only.
>
>5) You may pick a team to win, lose, draw.
>
>6) Scoring will be 1 point for a win, 0 for a loss and 10 if you correctley
>pick a draw.
>
>7) To it make it fun the competition will consist of a few samller comps
>too. Each week you must also pick your "sure thing game" this is the game
>that you think you know the result of for sure. It can be any game you
>like. If you get it right then your still "in" if you get your sure thing
>game wrong then your out of it, last man standing wins! There will be a
>prize of a blown up picture of the spectacular Northam tornado!
>
>8) You must also pick your "top eight" in the order that you think they
>will finish. These dont have to be in till the end of round 5.
>
>9) The winner is the person with the highest score at the end of the 22
>round home and away season.
>
>10) Prizes: Each seperate comp, "sure thing", "top eight", plus the total
>winner will recieve their choice of any of the amazing poster's seen at the
>Tornado Project Online site, have a peek at em at,
>http://www.tornadoproject.com/products/postpage.htm#top
>If I happen to win any of the comps second place will get the prize!
>
>11) So when you send your picks to me you must send the the name of the
>eight teams that you hink will win, plus, your sure thing game. A typical
>email should look like this
>
>West Coast
>Fremantle
>Hawks
>Sydney
>Crows
>Nth Melb
>Port Adel
>Richmond
>
>sure thing game, West Coast to beat Collingwood.
>
>12) So thats it! The AFL starts this week so you must have your picks in by
>Friday this week, dont miss out as there is NO COST and some great prizes
>up for grabs!!
>
> Ira Fehlberg
--------------------------------------------------------------------------------------
017
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: ASWA vantage points database!
Date: Wed, 24 Mar 1999 18:23:52 +1000
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OK Daniel here is a entry or 3...........
1.Razorback Lookout, Picton.
Location - on the OLD Hume highway about 5kms north of Picton. Can be
accessed by Picton turnoff from F5 freeway, or from Camden to Picton road.
Views - Full 360 degrees, with very few trees. Can see right up to blue
mountains and beyond Richmond / Windsor, air quality is limiting factor.
View to south to about Bowral area, as altitude gradually rises the
southwards view is not as extensive, but quite large none the less. East to
coast ( can't see coast due to Illawarra escarpment ).
Pros - has a handy compass thingy with landmarks, good for pinpointing cell
direction / location. A picnic shed if it rains, but it is dirty, think of
it as a camera shelter shed.
Cons - as with most Sydney Basin views there is lots of broken glass, but
not as bad as some. - you are also very exposed if lightning were to be
close, and there are a few metal objects to attract it, grid post, etc.
2. Hill 60, Port Kembla -
Location - drive into Port Kembla and go direct to road near big smoke stack
( can't miss it ), follow this road SE to Hill 60, can't miss it, it is a
large hill beside Port Kembla Beach ( Military road goes direct from stack
to view ).
Views - 360' views. Seaward only limited by air quality, as you are at a
decent elevation you can see lots ( of water ), South - All the southern
Illawarra from Warrawong - Dapto to Kiama. North - all the way north along
coast to Kurnell, but escarpment limits western views, you will still see
the towers, just not the bases. West - OK, but steelworks is not the most
pleasant backdrop.
Pros - This is a superb east coast low location, it is very exposed, a
90knot wind gust was recorded here last August, good for that horizontal
rain / spray video. Also would be ideal post if suspecting a waterspout.
Cons - Do you really want to chase thunderstorms this close to the ocean, by
here they are on their way out to sea. Quite clean for a change.
3. Mt Pleasant, Kiama.
Location - Princes Hwy, about 10kms south of Kiama. Look for high wind
warning sign and watertank on left.
Views 180'. Southwards limited by air quality, can see mountains west of
Batemans Bay on a clear day, can pick out cells over Canberra. North is OK,
but limited by escarpment. West is out of the question.
Pros - this is not so much a observation post but a good viewing area to
help decide if a south coast chase should proceed or be called off, the view
south is simply great. Rumour also has it that the Nowra - Braidwood road is
to sealed, if so this would open up some great chasing possibilities. All
that area can be assessed from here.
Cons - exposed and no facilities, traffic can be tricky when exiting.
Michael
--------------------------------------------------------------------------------------
018
From: "Jane ONeill" [cadence at rubix.net.au]
To: [aussie-weather at world.std.com]
Subject: aus-wx: Re: footy tipping comp! / Melb weather
Date: Wed, 24 Mar 1999 18:31:38 +1100
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>Somebody will have to do footy competition for Sydney and Brisbane as it is
>a different code!!!
>
>Jimmy Deguara
I'll be in that one - I've only been able to even *think* about football
since the appropriately named "Melbourne Storm" hit the scene - 9 years I've
been in the wilderness down here .....
Melbourne is currently just beginning to feel the effects of the circulation
associated with ex- tropical cyclone Vance. Wind is already gusting to 31
knots & it's warm (22.4C). Interesting to see what happens if this sytem
gets blocked. Already starting to lose twigs from the gum tree over the
house - so I hate to think what will happen later considering we are
in a bit of a hollow.
Report on the ABC at 5pm was from someone in SA sitting in the middle of a
dust storm guesstimating winds of 85knots (????) and not being able to see
to the end of his bonnet..........
Jane
battening down in Bayswater
--------------------------------------------------------------------------------------
019
From: John Woodbridge [jrw at pixelcom.net]
To: "'aussie-weather at world.std.com'" [aussie-weather at world.std.com]
Subject: RE: aus-wx: Vance, Wind speed & Onslow
Date: Wed, 24 Mar 1999 17:35:58 +1000
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Hi Blair,
For the storm of the century award, I meant in terms of size & severity. In
terms of loss of life or damage as you say, hard to go past Tracey for that
award, but I feel that this is not a particularly valuable way to measure a
storm, since it clearly depends upon the chance of a major population
centre being hit. Tracey was actually quite a small albeit intense storm,
it just happened to score a direct hit on the largest population centre
around. A couple of hundred kms either way and it would only have gained
brief media comment and been long forgotten.
I was curious about Onslow because I have not heard any media report
mention the town since Sunday.
Regards,
-----Original Message-----
> Hi all,
>
> According to the BoM we have an officially recorded max windgust from
Vance
> of 267km/hr (a new Australian mainland record) at Learmonth, 38km south
of
> Exmouth. How anything can survive that I don't know, but... At the
time,
> Vance was moving south at approx. 40km/hr and I understand that Exmouth
and
> Learmonth were to the West of the Eye, therefore, one could postulate a
max
> wind speed on the East side of the Eye approaching 340km/hr. From which
> comes the question... What happened in Onslow, which was on the East
> side??
To be pedantic, it was an equal record for 'Australia' (including
offshore islands, but not Antarctica) and an outright record for the
mainland. The other 267 km/h obs was in Cyclone Olivia (1997?) at an
island off the coast.
I haven't seen the Onslow obs but presume we would have heard about it
if they topped 267. The eye didn't get quite as close to Onslow as
it did to Learmonth, which probably makes up for Onslow being on the
east side - Learmonth was reporting the stronger winds of the two
before the communications went on the blink.
As mentioned in an earlier mail, one of the BMRC people has various
instruments on one of the NW Cape radio masts at differing heights.
He was on the first plane there! I'll be interested to see what comes
out of it - it will probably be the most comprehensive vertical
profile ever obtained of the lower levels of a severe TC if the
instruments worked.
Parts of Exmouth were supposedly built by the US military to withstand
a nuclear attack, so it's not surprising that it handled a mere
cyclone :-)
It's quite common for cyclones to accelerate dramatically once they
get overland south of the tropics. Bobby behaved in much the same
way.
> I can't get over the speed at which it has ripped crossed W.A. Monday
> lunchtime it was crossing the coast near Exmouth. Now just 48 hours
later,
> it's near Adelaide..
>
> I reckon for Australia, this must be the storm of the decade if not storm
> of the century.
Decade, yes - Bobby is the other serious contender (a weaker storm, but
more loss of life, probably more damage too, all things considered).
Hard to go past Tracy, though - to say nothing of the 1918 Mackay
storm, Althea (1971) and quite a few others - for the storm of the
century.
Blair Trewin
--------------------------------------------------------------------------------------
020
Date: Wed, 24 Mar 1999 19:11:46 +1100
From: Keith Barnett [weather at ozemail.com.au]
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Vance, Wind speed & Onslow
References: <199903240306.OAA01401 at mullara.met.unimelb.EDU.AU>
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Can someone please tell me why the rainfalls weren't higher? Is it because of the
speed of the storm as it passed? Compare with Rona in Queensland (and Bellenden
Ker, Babinda etc). Or the fact that on the approach side of the cyclone,because
the winds were roughly northwest to northeast, that they were drier?
--------------------------------------------------------------------------------------
021
From: "Terry Bishop" [dymprog at mpx.com.au]
To: [aussie-weather at world.std.com]
Subject: RE: aus-wx: Re: aussie-weather: Change
Date: Wed, 24 Mar 1999 19:45:33 +1000
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Hi Lindsay,
The 12mm was the BoM's 24 Hr reading till 9.00am on Monday 22 March, 1999.
I assume you would have received some on Sunday night/early Monday morning.
Terry.
mailto:dymprog at mpx.com.au
> -----Original Message-----
> From: aussie-weather-approval at world.std.com
> [mailto:aussie-weather-approval at world.std.com]On Behalf Of Lindsay
> Sent: Wednesday, 24 March 1999 3:39
> To: aussie-weather at world.std.com
> Subject:
>
>
> G'day Terry,
>
> 12mm of rain in blackheath?
>
> On what day? I had 2mm for the 24hrs to 9am for Monday 22nd. I haven't
> checked with my neighbour but normally his measurements are close to
> mine.
--------------------------------------------------------------------------------------
022
X-Originating-Ip: [137.111.7.98]
From: "Paul Graham" [v_notch at hotmail.com]
To: aussie-weather at world.std.com
Subject: aus-wx: Re: interesting satellite...
Date: Wed, 24 Mar 1999 03:22:06 PST
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Steve and everyone,
If it is a polar orbiter then it should appear at roughly the same time
everyday - although this does change through the year as it has to
compensate for a reducing orbital radius. You can get the latest 2 line
elements from http://www.celestrak.com (I think it is) and plug them
into some tracking software (I use STSPLUS for it's really nice global
display but you can also use Winorbit or probably someting much more
sophisticated). It certainly is interesting seeing the colour change as
I think satellites spin about an axis and so this may be the reason. If
you are able to get up at 5:15am you might want to have a look to see if
it passes over again. It is the first time I have seen a satellite
changing colour but I have seen some blinking which, I think, is
indicative of the axial spin. I know all this isn't quite weather
related but I know that many people on this list would spend time gazing
at the sky so I thought it was worth commenting on. You never know, it
could be a NOAA...There must be lots of polar orbiters now with this
Iridium system and Microsoft's plans for a global data net comprising of
around 80 polar orbiters, I think.
- Paul G.
--------------------------------------------------------------------------------------
023
From: "James Chambers" [jamestorm at OzeMail.Com.au]
To: "aus-wx" [aussie-weather at world.std.com]
Subject: aus-wx: Severe Tropical Cyclones in Qld
Date: Wed, 24 Mar 1999 20:11:06 +1000
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Hi all
While we're talking about very strong Tropical Cyclones, I thought I'd show
you all 4 examples of very severe TC's that have crossed the Qld coast. All
caused massive loss of life and the destruction of many buildings. I did
list many more but I thought the email would get too long!
1899, March
Bathurst Bay Cyclone
Category 5
307 crew members of a pearling fleet killed
914hpa - lowest pressure ever recorded in Qld
1918, January 20 - The phenomenal Mackay Cyclone
Category 4-5
~525mm of rain Jan 4 to Jan 19th
~1400mm from Jan 20th to Jan 25th
932hpa at Mackay
30 Dead
Massive floods across Central Qld ---> Before the TC, flooding was
widespread, but when the much more intense rain fell with the crossing TC,
flooding was extraordinary. The 3.65m storm surge was on top of that!
1918, March 10 This one struck between Cairns and Innisfail, devastating
Mission Beach.
Category 5
2 months after the Mackay disaster.
928hpa
28 Dead
1949, March 2. Crossed the coast between Rockhampton and Gladstone
Category 4-5
927hpa
4 Dead
Hope this is of interest.
------------------------------------------------------
James Chambers
http://www.ozemail.com.au/~jamestorm/bristorm.html
| Document: 990324.htm
Updated: 29 March 1999 |
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