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Storm News
[Index][Aussie-Wx] |
Australian Weather Mailing List Archives: Thursday, 2 September 1999 |
From Subject
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001 Harald Richter [spatz at atmos.albany.edu] seabreeze and storms
002 Michael Fewings [mike at strikeone.com.au] FNMOC self updating page
003 Matt Smith [disarm at braenet.com.au] Storms in Sydney Today ?
004 Ben Quinn [bodie at flatrate.net.au] Storms in Sydney Today ?
005 Ben Quinn [bodie at flatrate.net.au] Above Average Rainfall
006 "Patrick Tobin" [patricktobin at ozemail.com.au] FNMOC self updating page
007 "Patrick Tobin" [patricktobin at ozemail.com.au] Storms in Sydney Today ?
008 Anthony Cornelius [cyclone at flatrate.net.au] seabreeze and storms
009 Lindsay [writer at lisp.com.au] Winter's Last Laugh?
010 "Kevin Phyland" [kjphyland at hotmail.com] FNMOC self updating page
011 "Patrick Tobin" [pdtobin at hotmail.com] Wagga Radar
012 "Patrick Tobin" [pdtobin at hotmail.com] Wagga Radar (2)
013 "Mark Hardy" [mhardy at magna.com.au] (no subject)
014 Blair Trewin [blair at met.Unimelb.EDU.AU] Above Average Rainfall
015 "Mark Hardy" [mhardy at magna.com.au] (no subject)
016 "Patrick Tobin" [pdtobin at hotmail.com] Wagga Radar (2)
017 John Woodbridge [jrw at pixelcom.net] January 21 1991 supercell no.1
018 John Woodbridge [jrw at pixelcom.net] seabreeze and storms
019 John Woodbridge [jrw at pixelcom.net] FNMOC self updating page & other models
020 Michael Fewings [mike at strikeone.com.au] FNMOC self updating page & other models
021 Michael Fewings [mike at strikeone.com.au] FNMOC self updating page
022 Jacob [jacob at iinet.net.au] Strong Cold front for WA
023 Don White [donwhite at ozemail.com.au] Wagga Radar (2)
024 "McDonald" [mcdonald at one.net.au] Storms in NE VIC
025 Blair Trewin [blair at met.Unimelb.EDU.AU] Early-season warmth
026 "Michael Thompson" [michaelt at ozemail.com.au] Above Average Rainfall
027 "Michael Thompson" [michaelt at ozemail.com.au] FNMOC self updating page
028 "Michael Thompson" [michaelt at ozemail.com.au] seabreeze and storms
029 Ira Fehlberg [jra at upnaway.com] Possible Tornado in WA this arvo and latest warnings!
030 Andrew Wall [astroman at chariot.net.au] January 21 1991 supercell no.1
031 Ben Quinn [bodie at flatrate.net.au] The Australian Weather Pages Webring
032 Jimmy Deguara [jdeguara at ihug.com.au] Damage photos
033 Peter Matters [pmatters at eck.net.au] Storms in NE VIC
034 Mark Dwyer [mjd at wantree.com.au] Perth WX
035 Jimmy Deguara [jdeguara at ihug.com.au] Storms on the way
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001
From: Harald Richter [spatz at atmos.albany.edu]
Subject: Re: aus-wx: seabreeze and storms
To: aussie-weather at world.std.com (Australian Severe Weather Association)
Date: Wed, 1 Sep 1999 13:50:44 +0000 (GMT)
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Sender: aussie-weather-approval at world.std.com
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Hi Michael (et al.),
It sounds to me like the convergence zone between the NE seabreeze
and a northwesterly "inland surface flow" is prime initiation region
for storms. However, at least some storms must form further inland, beyond
the seabreeze region of influence. I am still wondering
how the dewpoint in, say, November changes from quite high (near Brisbane)
to quite low (500 km west of Brisbane). Is this transition sharp
(over a few tens of kilometres), or does it change gradually?
I am not surprised that no storms form in the NW flow -
nothing to eat for hungry storms.
Harald
----- Forwarded message from Michael Thompson -----
>From aussie-weather-approval at world.std.com Wed Sep 1 13:02:59 1999
Message-ID: <006301bef477$57e71480$35e66ccb at ozemail>
>From: "Michael Thompson"
To: [aussie-weather at world.std.com]
References: <199908311433.OAA15001 at acacia.atmos.albany.edu>
Subject: Re: aus-wx: Who am I?
Date: Wed, 1 Sep 1999 22:19:19 +1000
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Precedence: list
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Hi Harald
It is a pity you missed our sea breeze discussion a few months ago. The sea
breezes role in storms was hotly debated. There is no doubt that the
seabreeze front influences storms in both states.
Perhaps not a dryline in the US sense but often we get a NW wind pushing
ahead of front, typically September - December. On the coast the NE sea
breeze usually overpowers it. I have noticed time again that the best storm
activity occurs as the NW wind finally pushes aside the seabreeze. It is a
dual edge sword though as nothing ever forms behind the NW wind.
Michael
>
> As the trailer to my emails sate, I am currently based in Albany, NY,
> attempting to use a mesoscale model (MM5) in the search for answers
> on how thunderstorms form. Of particular interest to me is the
> initiation of convection along so-called "drylines" - near-surface
> boundaries separating high dewpoint from low dewpoint air.
> One thing that would interest me a fair bit is evidence for
> the existence and storm initiation role of those drylines
> in Australia, particularly in NSW and QD. I have a funny
> feeling that a number of the big storms there do actually
> fire off the dryline. You can get special chaser satisfaction
> out of observing those storms initiate on such a boundary, and
> then monitor them for hours as they move E (NE,SE) and
> develop all sorts of features, if you're lucky.
>
> Why am I on this list? I lived on Melbourne
> for almost all of this decade, and plan to return
> after spending some more time with the National
> Severe Storms Laboratory (NSSL) in Norman, Oklahoma.
> I could post some of the chase experiences I might have in
> the US, but as that is not Australian weather it would
> be off topic, right?
>
> Lots of CAPE, Harald
>
>
>
> ----- Forwarded message from Jane ONeill -----
>
> Welcome to the aussie-weather list !!
>
> I hope you enjoy the list and the friendships that develop from it as much
> as we do.
>
> You might like to introduce yourself by sending an email to aussie-weather
> with the following details as well as a short resume and your particular
> area of interest.
>
> It would be useful if other members could know some or all of the
following:
>
> Name, Suburb/Town, State, ICQ No (if you have one), Home Phone no, Mobile,
> Nick, email address, homepage URL.
>
> [snip][snip]
>
> ----- End of forwarded message from Jane ONeill -----
>
> --
> ------------------------------------------------------
> Harald Richter
> Postdoctoral Research Associate
> Department of Earth and Atmospheric Sciences
> State University of New York at Albany
> 1400 Washington Avenue
> Albany, NY 12222
> phone: (518) 442-4273 fax: (518) 442-4494
> spatz at atmos.albany.edu
> http://www.atmos.albany.edu/facstaff/spatz/spatz.html
> ------------------------------------------------------
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> with "unsubscribe aussie-weather your_email_address" in the body of your
> message.
> -----------------------jacob at iinet.net.au------------------------------
>
----- End of forwarded message from Michael Thompson -----
--
------------------------------------------------------
Harald Richter
Postdoctoral Research Associate
Department of Earth and Atmospheric Sciences
State University of New York at Albany
1400 Washington Avenue
Albany, NY 12222
phone: (518) 442-4273 fax: (518) 442-4494
spatz at atmos.albany.edu
http://www.atmos.albany.edu/facstaff/spatz/spatz.html
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002
Date: Thu, 02 Sep 1999 03:09:48 +0800
From: Michael Fewings [mike at strikeone.com.au]
Organization: Strike One Lightning Photos
X-Mailer: Mozilla 4.5 [en] (Win98; I)
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To: Aussie Weather [aussie-weather at world.std.com]
Subject: aus-wx: FNMOC self updating page
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi all,
Now I know the images are there....
I have created a self updating page that takes care of the
urls with the dates in them.
The update time is 2 am/pm in WA
and 4am/pm in the Eastern States
Check out
http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
Regards
--
Michael Fewings
Photographer of:
Strike One Lightning Photos
http://strikeone.com.au
Web Master of:
Australian Severe Weather Association Inc.
http://www.severeweather.asn.au
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003
X-Sender: disarm at braenet.com.au (Unverified)
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Date: Thu, 02 Sep 1999 05:30:44 +1000
To: aussie-weather at world.std.com
From: Matt Smith [disarm at braenet.com.au]
Subject: aus-wx: Storms in Sydney Today ?
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
The BoM have the chance of a storm forecast in Sydney this afternoon, Hope
it eventuates, if they do i am contactable on 0407 069 693 from 4pm onwards.
Thanks
Matt Smith
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004
Date: Thu, 02 Sep 1999 07:38:11 +1000
From: Ben Quinn [bodie at flatrate.net.au]
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Storms in Sydney Today ?
Sender: aussie-weather-approval at world.std.com
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Hey Ben from Brisbane here..
At 7:30am there is quite a substantial area of showers and storms over
parts of SW Queensland, and also some better looking showers/storms over
NE Victoria..
I am still hopeful for some nice showers around SE QLD later on today
and tomorrow, although with the SE/E winds around i can see allot of
cloud building up along the coast as the upper level trough approaches..
Matt Smith wrote:
>
> The BoM have the chance of a storm forecast in Sydney this afternoon, Hope
> it eventuates, if they do i am contactable on 0407 069 693 from 4pm onwards.
> Thanks
>
> Matt Smith
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> -----------------------jacob at iinet.net.au------------------------------
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005
Date: Thu, 02 Sep 1999 07:36:05 +1000
From: Ben Quinn [bodie at flatrate.net.au]
X-Mailer: Mozilla 4.61 [en] (Win95; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Above Average Rainfall
Sender: aussie-weather-approval at world.std.com
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Hey Anthony, everyone..
I had 64mm here in August.. The average for Redcliffe in August is
38.2mm.. so 64mm is well above average as well..
Generally it has been a very very wet winter in parts of southern QLD..
Boondall, a suburb to my south received 371mm in the period from June to
August.. breaking the record of 353mm for this period which was set in
1983..
Some places on the gold coast would have absolutely smashed their mean
rainfall.. I saw a report of 144mm (in 18 hours) somewhere on the gold
coast over the weekend.. If the average of 55mm for Southport (for
August) is anything to go by, then some records may have been broken
down there as well..
Maybe Blair Trewin could provide some information here?
Anthony Cornelius wrote:
>
> Hi all,
>
> Well, both June and July have been above average, and August has been no
> exception! Thanks to the thunderstorms a few days ago, I recorded
> 72.2mm, which is well above the average of 41mm. We're now into
> September (spring, YAY!!!!!!!!!!!!!!) which is our driest month of all
> (on average) with 33mm.
>
> How have our NE NSW counterparts faired?
>
> --
> Anthony Cornelius
> Queensland Coordinator of the Australian Severe Weather Association
> (ASWA)
> (07) 3390 4812
> 14 Kinsella St
> Belmont, Brisbane
> QLD, 4153
> Please report severe thunderstorms on our Queensland severe thunderstorm
> reporting line on (07) 3390 4218 or by going to our homepage at
> http://www.severeweather.asn.au
>
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> -----------------------jacob at iinet.net.au------------------------------
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006
From: "Patrick Tobin" [patricktobin at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: FNMOC self updating page
Date: Thu, 2 Sep 1999 08:13:52 +1000
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Thanks Michael for doing this and thanks also to Laurier and Mark for the
info.
Michael, I was wondering if you would be able to do 2 extra things..
1) could you include links to the 12 hourly updates (I know NGP has output
for 12,24,36etc hrs - this can be done manually in the browser but gets
pretty tedious...); and
2) add a link for "all times" (I was going to do this but don't have the
programming skills to automatically update).
That would be gratefully appreciated.
I do hope that FNMOC don't restrict access to their site as the number of
hits goes up from this group combined with the discussion of its continuing
availability on a public forum.
Clearly the intention of FNMOC as expressed by their cover page ie "AUS/NZ
suspended in April 1999" was to restrict the distribution of the information
on this area. This view is reinforced by yesterday's dropping of data for
south of 30S.
This could be viewed in a couple of ways 1) is that they are resource hungry
(and Aus/NZ got a lot of hits) and FNMOC want to focus use of their site on
areas they have decided for whatever reason are the most important; 2) is
that hits on the Aust/NZ page were pretty insignificant in the scheme of
things which is why they dropped the reference on their cover page and that
any increase in usage by members of this group will not be of any great
significance.
The reason for raising this is to seek people's views about whether we
quietly enjoy having access to the models and not make too much fuss. The
other option is to make a fuss and send some emails to FNMOC asking them to
restore access to Aust/NZ through their cover page (this could be risky and
I presume that those who have an interest in these models would already most
likely be members of our group).
A half-way option may be to update this list members' web sites in a low key
way and have them point to the linking and updating resource that Michael
has just created.
Patrick
-----Original Message-----
From: Michael Fewings [mike at strikeone.com.au]
To: Aussie Weather [aussie-weather at world.std.com]
Date: Thursday, 2 September 1999 5:17
Subject: aus-wx: FNMOC self updating page
>Hi all,
>
>Now I know the images are there....
>
>I have created a self updating page that takes care of the
>urls with the dates in them.
>
>The update time is 2 am/pm in WA
>
>and 4am/pm in the Eastern States
>
>Check out
>
>http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
>
>Regards
>--
>Michael Fewings
>
>Photographer of:
>Strike One Lightning Photos
>http://strikeone.com.au
>
>Web Master of:
>Australian Severe Weather Association Inc.
>http://www.severeweather.asn.au
>
>
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> message.
> -----------------------jacob at iinet.net.au------------------------------
>
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007
From: "Patrick Tobin" [patricktobin at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: Storms in Sydney Today ?
Date: Thu, 2 Sep 1999 08:25:42 +1000
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Looks like things could get interesting in Canberra this morning.
At 8.15 am, the radar is showing a line of storms developing to our west and
moving east - with a few pixels of red showing up around Wagga. Airservices
metars show Wagga with thunderstorms and 3.4mm of rain recorded.
Patrick
-----Original Message-----
From: Ben Quinn [bodie at flatrate.net.au]
To: aussie-weather at world.std.com [aussie-weather at world.std.com]
Date: Thursday, 2 September 1999 7:47
Subject: Re: aus-wx: Storms in Sydney Today ?
>Hey Ben from Brisbane here..
>
>At 7:30am there is quite a substantial area of showers and storms over
>parts of SW Queensland, and also some better looking showers/storms over
>NE Victoria..
>
>I am still hopeful for some nice showers around SE QLD later on today
>and tomorrow, although with the SE/E winds around i can see allot of
>cloud building up along the coast as the upper level trough approaches..
>
>Matt Smith wrote:
>>
>> The BoM have the chance of a storm forecast in Sydney this afternoon,
Hope
>> it eventuates, if they do i am contactable on 0407 069 693 from 4pm
onwards.
>> Thanks
>>
>> Matt Smith
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>> To unsubscribe from aussie-weather send e-mail
to:majordomo at world.std.com
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>> message.
>> -----------------------jacob at iinet.net.au------------------------------
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> -----------------------jacob at iinet.net.au------------------------------
>
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008
Date: Thu, 02 Sep 1999 08:49:58 +1000
From: Anthony Cornelius [cyclone at flatrate.net.au]
X-Mailer: Mozilla 4.6 [en] (Win98; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: seabreeze and storms
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Harald,
Harald Richter wrote:
>
> Hi Michael (et al.),
>
> It sounds to me like the convergence zone between the NE seabreeze
> and a northwesterly "inland surface flow" is prime initiation region
> for storms. However, at least some storms must form further inland, beyond the seabreeze region of influence.
Yes - this is correct, NE seabreeze and a NW'ly help create a "seabreeze
front." Studies by Jeff C at the BoM here have shown that this is a
very significant, and dangerous part of meteorology here in SE QLD (the
Brisbane region). Dangerous, because it has caused many seemingly
"strong but not severe t'storms" to shoot up very quickly in strength as
they hit the seabreeze front. One prime example of this, was Oct 13
last year, when a supercell developed and passed over the CBD, and
caused a tornado (~F1) in the inner northern suburbs.
For a typical day of thunderstorms in SE QLD, you normally have a NE'ly
flow for at least 24hrs before the potential storms developed. This
means that storms develop inland, in fact, they nearly always develop to
a SSW-WSW (inclusive) direction (relative to the placement of
Brisbane). They then nearly always move ENE-NNE (inclusive) - there's
always exceptions though (hence, 'nearly always.') They form in that
area because of the mountain ranges there, and though while not very
significant (ie, to my knowledge, only 2 are higher than 1000m(3000ft),
and they are on the border ranges), do play a very significant role in
thunderstorm formation. If you look at maps, you'll very quickly notice
a small 'maxmimum' in this area. Frequently, storms will form on the
border ranges and will not effect Brisbane. This seems to be the case
on:
a) high cap days
b) at night
>I am still wondering how the dewpoint in, say, November changes from >quite high (near Brisbane) to quite low (500 km west of Brisbane). Is >this transition sharp (over a few tens of kilometres), or does it change >gradually?
It depends on the setup. In summer (Nov is a bit too early), the
"summer heat trough" sets in, this is a semi-permanent trough that sits
over central QLD-NSW due to the extreme temps (often exceeding 40C)
experienced there daily. Along this, is a feature you mentioned in a
previous email (the dryline), sometimes DP differences can be as much as
15C on this line. So, it depends where that trough is sitting, normally
though, the DP's are quite higher to the coast, but if there's been a
decent NE flow for a few days, then a place well west of Brisbane
(500km) will still experience fairly high DP's (high teens). This can
be even higher at times.
>I am not surprised that no storms form in the NW flow -
> nothing to eat for hungry storms.
Depending on the time of year, a NW flow can be quite moist, as when you
look at the structure of AU, a NW flow for us (Brisbane) will still have
winds following the coast, and gather moisture. Nonetheless, NE'ers
contain much more moisture. But this is also subject to how warm the
temps in the coral sea are. IE, you're going to get a lot more
moisture/warmth from the ocean if it's sitting at a nice 28C (well NE of
you) than say 24C.
Hope this helps Harald,
--
Anthony Cornelius
Queensland Coordinator of the Australian Severe Weather Association
(ASWA)
(07) 3390 4812
14 Kinsella St
Belmont, Brisbane
QLD, 4153
Please report severe thunderstorms on our Queensland severe thunderstorm
reporting line on (07) 3390 4218 or by going to our homepage at
http://www.severeweather.asn.au
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009
Date: Thu, 02 Sep 1999 08:37:50 -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: Winter's Last Laugh?
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hope so Andrew. I hope so.
August Obs from my place are:
Average Max: 10.4
Rain: 77mm
Snow days: (1) 14/8
Event:
sleet then moderate to heavy snow showers then more sleet.
Some Winter Obs are:
I recorded nine separate days of sleet/light snow during the winter
period with only one (14/8) of any significance. On that day, I had
quite a bit of slush on the car roof (it was parked outside) and we had
a light ground cover before the sleet/rain washed it away. It did snow
quite heavily during this period but the temp was around 0.5 to 1.5 so
it melted quickly. These observations of course, did not include my
Oberon snow chases.
Lindsay Pearce
Andrew Miskelly wrote:
>
> Hi all,
>
> It looks as though winter may just have the last laugh in SE Aust. late in
> the weekend and also next Tuesday. Some rather enticing (in the context of
> this winter) patterns are showing up in the models...
>
> Andrew.
> --
> Andrew Miskelly
> Illawarra/Southern Tablelands, NSW
> amiskelly at ozemail.com.au
>
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010
X-Originating-IP: [203.36.248.12]
From: "Kevin Phyland" [kjphyland at hotmail.com]
To: aussie-weather at world.std.com
Subject: aus-wx: FNMOC self updating page
Date: Thu, 02 Sep 1999 09:41:37 EST
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Mike!
Thanx for the page! But in the spirit of sharing...did you know that the
twelve-hourly images are also available (not just the 24 hourly ones)?
Cheers,
Kevin from Wycheproof.
>From: Michael Fewings
>Reply-To: aussie-weather at world.std.com
>To: Aussie Weather
>Subject: aus-wx: FNMOC self updating page
>Date: Thu, 02 Sep 1999 03:09:48 +0800
>
>Hi all,
>
>Now I know the images are there....
>
>I have created a self updating page that takes care of the
>urls with the dates in them.
>
>The update time is 2 am/pm in WA
>
>and 4am/pm in the Eastern States
>
>Check out
>
>http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
>
>Regards
>--
>Michael Fewings
>
>Photographer of:
>Strike One Lightning Photos
>http://strikeone.com.au
>
>Web Master of:
>Australian Severe Weather Association Inc.
>http://www.severeweather.asn.au
>
>
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> -----------------------jacob at iinet.net.au------------------------------
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011
X-Originating-IP: [210.8.232.4]
From: "Patrick Tobin" [pdtobin at hotmail.com]
To: aussie-weather at world.std.com
Subject: aus-wx: Wagga Radar
Date: Wed, 01 Sep 1999 18:06:05 PDT
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
After the recent discussion about the Mildura radar,
I am now wondering if there may not be a similar
factor at work with the Wagga radar.
As you would know from my previous post this morning
I was getting a little excited about the prospect of
some interesting wx heading towards Canberra based
on the Wagga imagery which included as reasonable
spread of 2-10mm/hr, some 10-20 and the odd bit of
40-100 (which I considered pretty promising for 9 or
10 am).
In following the movement of this area of precipitation,
I noticed that the radar showed an almost complete
collapse of this activity from the 2320 image to the
2330. The scale of collapse in just 10min does not
seem credible - yes I know storms can collapse
rapidly on themselves especially slow moving
pulse cells where the outflow rapidly kills the
cell.
In this situation, the "storms" were moving at
a moderate pace and were clearly associated with
a wider synoptic scale pattern so such a rapid
collapse seem unlikely.
Unfortunately, the widespread low cloud in the
Canberra region has prevented me from gaining
a visual look at what is happening..
Having just written this, a window has developed
in the low cloud to the west and there appear to
be some impressive looking Cb and developing
congestus in the direction that the earlier
radar imagery would have suggested. So now I am
confused... the activity could still be there
but have fallen into a black radar hole. (I
would expect this with precipitation from
low level cloud but not from decent looking
Cb).
Unfortunately there are not very many stations
in the area where the activity could be that
would verify what was actually happening.
Obviously, we need to build up some experience
over time in relating the radar imagery from
different sites to actually observed and
experienced conditions.
Perhaps this could be another objective for
the end of year chase.
Patrick - still looking forward to some interesting
wx based on what I can see with my own eyes.. and
its getting better every minute!! I wouldn't be
surprised to see some warnings issued for later on..
______________________________________________________
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012
X-Originating-IP: [210.8.232.2]
From: "Patrick Tobin" [pdtobin at hotmail.com]
To: aussie-weather at world.std.com
Subject: aus-wx: Wagga Radar (2)
Date: Wed, 01 Sep 1999 18:33:38 PDT
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Sorry everybody,
the obvious explanation seems to me now that the Wagga
radar went off line for some time and the Sydney and
Melbourne radar would have only "seen" the very
tops of the clouds. Wagga seems to be back on line
and as the sun burns off the low cloud I can clearly
see that the activity must have been there all along.
Still it was pretty misleading - especially when there
was no visibility.
Some good storms are out there at the moment - but I
am losing visibility again as other Cu cells build
up and obscure the main area of storms.
Patrick
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013
X-Mailer: Microsoft Outlook Express Macintosh Edition - 4.5 (0410)
Date: Thu, 02 Sep 1999 11:50:20 +1000
Subject: Re: aus-wx: Wagga Radar (2)
From: "Mark Hardy" [mhardy at magna.com.au]
To: aussie-weather at world.std.com
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Wagga radar is off-line every day from 9am till 11am for the radiosonde
flight. It is also used for sonde tracking in the afternoons as well.
Several other radars suffer this interruption.
MH
--
_____________________________________________________
Mark Hardy.
The Weather Company Pty. Ltd.
Level 2, 7 West Street, North Sydney 2060
Ph (02) 9955 7704. Fax (02) 9955 1536.
Mobile 0414 642 739
email: mhardy at theweather.com.au
_____________________________________________________
----------
>From: "Patrick Tobin"
>To: aussie-weather at world.std.com
>Subject: aus-wx: Wagga Radar (2)
>Date: Thu, 2 Sep 1999 11:33 AM
>
> Sorry everybody,
>
> the obvious explanation seems to me now that the Wagga
> radar went off line for some time and the Sydney and
> Melbourne radar would have only "seen" the very
> tops of the clouds. Wagga seems to be back on line
> and as the sun burns off the low cloud I can clearly
> see that the activity must have been there all along.
>
> Still it was pretty misleading - especially when there
> was no visibility.
>
> Some good storms are out there at the moment - but I
> am losing visibility again as other Cu cells build
> up and obscure the main area of storms.
>
> Patrick
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
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>
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014
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Above Average Rainfall
To: aussie-weather at world.std.com
Date: Thu, 2 Sep 1999 12:02:48 +1000 (EST)
X-Mailer: ELM [version 2.4 PL23]
Sender: aussie-weather-approval at world.std.com
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>
> Hey Anthony, everyone..
>
> I had 64mm here in August.. The average for Redcliffe in August is
> 38.2mm.. so 64mm is well above average as well..
>
> Generally it has been a very very wet winter in parts of southern QLD..
> Boondall, a suburb to my south received 371mm in the period from June to
> August.. breaking the record of 353mm for this period which was set in
> 1983..
>
> Some places on the gold coast would have absolutely smashed their mean
> rainfall.. I saw a report of 144mm (in 18 hours) somewhere on the gold
> coast over the weekend.. If the average of 55mm for Southport (for
> August) is anything to go by, then some records may have been broken
> down there as well..
>
> Maybe Blair Trewin could provide some information here?
I haven't checked in detail, but doubt if any station which was open
in 1967 would have broken any records for winter - in June 1967 alone
Brisbane Airport got 701mm (777mm for the winter). The 1999 total
(405.2) is the highest since 1973 (next highest is 374.6 in 1983).
The Boondall station opened in 1973, so it would have missed the 1967
rains.
Blair Trewin
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015
X-Mailer: Microsoft Outlook Express Macintosh Edition - 4.5 (0410)
Date: Thu, 02 Sep 1999 11:54:22 +1000
Subject: Re: aus-wx: Wagga Radar
From: "Mark Hardy" [mhardy at magna.com.au]
To: aussie-weather at world.std.com
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Patrick
If you want more information on the Wagga and other radars you can find a
summary on the bom site.
http://www.bom.gov.au/reguser/by_prod/radar/nswrad.shtml
MH
--
_____________________________________________________
Mark Hardy.
The Weather Company Pty. Ltd.
Level 2, 7 West Street, North Sydney 2060
Ph (02) 9955 7704. Fax (02) 9955 1536.
Mobile 0414 642 739
email: mhardy at theweather.com.au
_____________________________________________________
----------
>From: "Patrick Tobin"
>To: aussie-weather at world.std.com
>Subject: aus-wx: Wagga Radar
>Date: Thu, 2 Sep 1999 11:06 AM
>
> After the recent discussion about the Mildura radar,
> I am now wondering if there may not be a similar
> factor at work with the Wagga radar.
>
> As you would know from my previous post this morning
> I was getting a little excited about the prospect of
> some interesting wx heading towards Canberra based
> on the Wagga imagery which included as reasonable
> spread of 2-10mm/hr, some 10-20 and the odd bit of
> 40-100 (which I considered pretty promising for 9 or
> 10 am).
>
> In following the movement of this area of precipitation,
> I noticed that the radar showed an almost complete
> collapse of this activity from the 2320 image to the
> 2330. The scale of collapse in just 10min does not
> seem credible - yes I know storms can collapse
> rapidly on themselves especially slow moving
> pulse cells where the outflow rapidly kills the
> cell.
>
> In this situation, the "storms" were moving at
> a moderate pace and were clearly associated with
> a wider synoptic scale pattern so such a rapid
> collapse seem unlikely.
>
> Unfortunately, the widespread low cloud in the
> Canberra region has prevented me from gaining
> a visual look at what is happening..
>
> Having just written this, a window has developed
> in the low cloud to the west and there appear to
> be some impressive looking Cb and developing
> congestus in the direction that the earlier
> radar imagery would have suggested. So now I am
> confused... the activity could still be there
> but have fallen into a black radar hole. (I
> would expect this with precipitation from
> low level cloud but not from decent looking
> Cb).
>
> Unfortunately there are not very many stations
> in the area where the activity could be that
> would verify what was actually happening.
>
> Obviously, we need to build up some experience
> over time in relating the radar imagery from
> different sites to actually observed and
> experienced conditions.
>
> Perhaps this could be another objective for
> the end of year chase.
>
> Patrick - still looking forward to some interesting
> wx based on what I can see with my own eyes.. and
> its getting better every minute!! I wouldn't be
> surprised to see some warnings issued for later on..
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
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> message.
> -----------------------jacob at iinet.net.au------------------------------
>
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016
X-Originating-IP: [210.8.232.4]
From: "Patrick Tobin" [pdtobin at hotmail.com]
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Wagga Radar (2)
Date: Wed, 01 Sep 1999 19:07:02 PDT
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Thanks Mark,
that is useful to know in tracking systems during
those time periods. And in relating the imagery
to actual conditions.
Patrick
>Wagga radar is off-line every day from 9am till 11am for the radiosonde
>flight. It is also used for sonde tracking in the afternoons as well.
>Several other radars suffer this interruption.
>
>MH
>
>--
>_____________________________________________________
>Mark Hardy.
>The Weather Company Pty. Ltd.
>Level 2, 7 West Street, North Sydney 2060
>Ph (02) 9955 7704. Fax (02) 9955 1536.
>Mobile 0414 642 739
>email: mhardy at theweather.com.au
>
______________________________________________________
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017
From: John Woodbridge [jrw at pixelcom.net]
To: "'aussie-weather at world.std.com'" [aussie-weather at world.std.com]
Subject: RE: aus-wx: January 21 1991 supercell no.1
Date: Thu, 2 Sep 1999 12:09:24 +1000
Organization: Pixel Components
X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211
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Hi Jimmy,
That would be most interesting. I lived in Hornsby at the time (I lost
large parts of 3 trees), but was fortunate enough to observe this storm as
it hit Turramurra from the top floor of an elevated office block in St.
Leonards.
And no, I didn't see a tornado, just this magnificent green rain foot
protruding down and out from the cloud base (even kicking up a little).
Definitely a very strong downburst. The damage done is still the worst I
have directly observed from a single thunderstorm, and it also generated
the most spectacular burst of CG's I have ever seen. (I walked from Gordon
to Hornsby along the Pacific Hwy that evening (trains out, highway cut,
nothing else moving, hail in drifts some 3hrs after the storm,
trees/powerlines down and buildings damaged everywhere)). Downburst
damage was uniformly spread over a path 5km wide, but the most severe
damage was restricted to a narrow path a few hundred meters wide on the
east side of Turramurra (mainly bushland). Here the damage was very
reminiscent of tornadic winds (dense bush with tall trees, medium trees and
thick undergrowth was simply.. scoured, leaving bare ground and shattered
stumps), but if there was a tornado, it must have been hidden by the rain
curtain.
As an aside, it is interesting to observe the effect on conifers. Every
conifer still standing in that area went brown on the West side caused by
bruising from the hail, and have not recoved to this day.
John.
>snip
I have just received word about a supercell that occurred on the fateful
day of 1991 but earlier than the reintensified cell of Turramurra. This
cell was described by the people who live at Oakdale to the SW of Sydney
near Camden as having monsterous hail lasting 20 minutes completely
shattering windows, deeply denting corrugated iron roofs, and their son was
knocked unconscious by a hailstone!!! I will gather more information on
this.
Jimmy Deguara
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018
From: John Woodbridge [jrw at pixelcom.net]
To: "'aussie-weather at world.std.com'" [aussie-weather at world.std.com]
Subject: RE: aus-wx: seabreeze and storms
Date: Thu, 2 Sep 1999 13:26:10 +1000
Organization: Pixel Components
X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211
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Hi Harald,
My own observations subscribe to the theory that a dry line of sorts forms
on or near the inland trough. This trough is a feature for most of the
summer. In early summer (Oct-Dec) it tends to form approx 500km inland
parallel to the coast, but drifts towards the coast and often over the
coast and out to sea, only to reform inland shortly therafter. This
movement coincides with passage of southern ocean anti-cyclones. In mid
summer, the trough becomes much more permanently located inland - rarely
drifting over the coast and often drifting well west towards the QLD/NT
border. East of the trough winds are humid E/NE. In late summer, the
trough tends to dissipate rather than revert to springtime behaviour.
Passage of the trough line over Brisbane is ussually accompanied by
dramatic drops in humidity and plenty of thunderstorm activity. This is
why Oct-Dec is our best severe storm season.
The typical MSL pressure patterm would indicate that west of the trough,
winds should be SE. But passage of the trough line over Brisbane is
usually accompanied with a very dry NW change before a return to SE regime.
My theory is that a dry line forms east of the trough line.
I have noticed that really good storms require a nice strong NE sea-breeze,
and many storms are located at the leading edge of the seabreeze front, and
seem to move east with this front in late afternoon or early evening as the
seabreeze lessens. A SE sea-breeze ussually has an opposite effect, being
a storm killer (like southerlies in Sydney). Just a question as to the
CAPE for seabreeze flow I guess. A good storm line along the ranges may
assist via pressure drop along the storm line convergence zone, thus
possibly influencing and appearing to strengthen the sea breeze into the
storm line.
John.
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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: FNMOC self updating page & other models
Date: Thu, 2 Sep 1999 13:36:24 +1000
Organization: Pixel Components
X-Mailer: Microsoft Internet E-mail/MAPI - 8.0.0.4211
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi Michael,
Would it not be a vaguely sensible suggestion to accumulate links to all
our favourite models/sat pics and place them in the members area for aswa??
That way we would only have 1 common place to go to for radar and
everything.... Plus those in the know can keep the links optimally updated
as may be required. It would save much wasted time and frustration for
everybody.
John.
>snip
Check out
http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
Regards
--
Michael Fewings
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020
Date: Thu, 02 Sep 1999 12:32:50 +0800
From: Michael Fewings [mike at strikeone.com.au]
Organization: Strike One Lightning Photos
X-Mailer: Mozilla 4.5 [en] (Win98; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: FNMOC self updating page & other models
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
John and others
While I agree with you on this concept. In thoery there are others sites out
there that have all of this information already. I don't wish to reinvent the
wheel (to coin Jane's term).
The next plan is to use a list of weather links that number in the thousands to
put onto the aswa site that can be searched and displayed for relavent
information (similar to a search engine)
It will be a combined process between aswa and the brisbane storm chasers site.
Will keep you posted about it.
Regards
--
Michael Fewings
Photographer of:
Strike One Lightning Photos
http://strikeone.com.au
Web Master of:
Australian Severe Weather Association Inc.
http://www.severeweather.asn.au
John Woodbridge wrote:
> Hi Michael,
>
> Would it not be a vaguely sensible suggestion to accumulate links to all
> our favourite models/sat pics and place them in the members area for aswa??
> That way we would only have 1 common place to go to for radar and
> everything.... Plus those in the know can keep the links optimally updated
> as may be required. It would save much wasted time and frustration for
> everybody.
>
> John.
>
> >snip
>
> Check out
>
> http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
>
> Regards
> --
> Michael Fewings
>
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> -----------------------jacob at iinet.net.au------------------------------
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021
Date: Thu, 02 Sep 1999 12:38:51 +0800
From: Michael Fewings [mike at strikeone.com.au]
Organization: Strike One Lightning Photos
X-Mailer: Mozilla 4.5 [en] (Win98; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: FNMOC self updating page
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi All,
The 12 hour ones are now up.
I will put in a "display all" option but don't hold your breath on it.
That takes a little bit more organising as I have to create separate pages for
all of them :(
Cheers
--
Michael Fewings
Photographer of:
Strike One Lightning Photos
http://strikeone.com.au
Web Master of:
Australian Severe Weather Association Inc.
http://www.severeweather.asn.au
Kevin Phyland wrote:
> Hi Mike!
>
> Thanx for the page! But in the spirit of sharing...did you know that the
> twelve-hourly images are also available (not just the 24 hourly ones)?
>
> Cheers,
> Kevin from Wycheproof.
>
> >From: Michael Fewings
> >Reply-To: aussie-weather at world.std.com
> >To: Aussie Weather
> >Subject: aus-wx: FNMOC self updating page
> >Date: Thu, 02 Sep 1999 03:09:48 +0800
> >
> >Hi all,
> >
> >Now I know the images are there....
> >
> >I have created a self updating page that takes care of the
> >urls with the dates in them.
> >
> >The update time is 2 am/pm in WA
> >
> >and 4am/pm in the Eastern States
> >
> >Check out
> >
> >http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
> >
> >Regards
> >--
> >Michael Fewings
> >
> >Photographer of:
> >Strike One Lightning Photos
> >http://strikeone.com.au
> >
> >Web Master of:
> >Australian Severe Weather Association Inc.
> >http://www.severeweather.asn.au
> >
> >
> > +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
> > To unsubscribe from aussie-weather send e-mail to:majordomo at world.std.com
> > with "unsubscribe aussie-weather your_email_address" in the body of your
> > message.
> > -----------------------jacob at iinet.net.au------------------------------
>
> ______________________________________________________
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022
X-Sender: jacob at mail.iinet.net.au
X-Mailer: QUALCOMM Windows Eudora Pro Version 4.1
Date: Thu, 02 Sep 1999 13:35:58 +0800
To: aussie-weather at world.std.com
From: Jacob [jacob at iinet.net.au]
Subject: aus-wx: Strong Cold front for WA
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Anyone seen the latest sat pic lately? a very nice looking cold front
approaching the SW behind the front that moved through a few hours ago.
Its very windy now, and there are lots of warnings out for Perth and the SW
PRIORITY
FOR IMMEDIATE BROADCAST
SEVERE THUNDERSTORM ADVICE
Issued at 11:10 am WST on Thursday, 2 September 1999
People in the Lower West and South West Districts are advised that there is a
risk of severe thunderstorms during this afternoon and tonight.
Storms may be accompanied by hail, flash flooding and squally winds that could
result in damage to property.
The State Emergency Service advises that people should keep a lookout for
thunderstorms and if storms approach secure loose items, move vechicles under
cover, then stay indoors until the storms have passed. Driving conditions
may be
hazardous.
This Thunderstorm Advice will be updated at 2:00pm.
SEVERE WIND WARNING
Issued at 11:00 am WST on Thursday, 2 September 1999
For the Lower West and South West Districts, including the Perth Metropolitan
area, Mandurah and Bunbury.
A front is expected to cross the lower west and south west coasts during this
morning.
Another front is expected to move into the lower south west tonight.
These systems are expected to cause severe thunderstorms, and wind squalls to
110 kilometres per hour during today and tonight.
The State Emergency Service advises that people should secure loose objects and
stay indoors when gales develop. Boat owners should ensure that small craft are
securely moored.
The next advice will be issued at 2:00pm.
LOCAL WATERS FORECAST
YANCHEP TO MANDURAH AND OFFSHORE TO ROTTNEST ISLAND
Issued at 11:54am WST on Thursday the 2nd of September 1999
for the remainder of today and Friday
FORECAST:
Gale warning current.
NW winds 30/40 knots and shifting W/SW 30/40 knots later today. Squalls to 60
knots in showers and thunderstorms.
Strong squally SW'ly winds tomorrow.
Seas to 2.5m. Swell to 3.0m.
Winds on Melville Water will be 5 to 10 knots lighter.
OUTLOOK FOR SATURDAY:
Fresh SW winds.
Jacob
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023
Date: Thu, 02 Sep 1999 15:47:24 +1000
From: Don White [donwhite at ozemail.com.au]
X-Mailer: Mozilla 4.5 [en] (Win98; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: Re: aus-wx: Wagga Radar (2)
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
The Soil Station to the NW of Wagga ( 3-4 kms) had 18 mm of rain between
8& 9am so anything is possible.
don W
Patrick Tobin wrote:
>
> Sorry everybody,
>
> the obvious explanation seems to me now that the Wagga
> radar went off line for some time and the Sydney and
> Melbourne radar would have only "seen" the very
> tops of the clouds. Wagga seems to be back on line
> and as the sun burns off the low cloud I can clearly
> see that the activity must have been there all along.
>
> Still it was pretty misleading - especially when there
> was no visibility.
>
> Some good storms are out there at the moment - but I
> am losing visibility again as other Cu cells build
> up and obscure the main area of storms.
>
> Patrick
>
> ______________________________________________________
> Get Your Private, Free Email at http://www.hotmail.com
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024
From: "McDonald" [mcdonald at one.net.au]
To: [aussie-weather at world.std.com]
Subject: aus-wx: Storms in NE VIC
Date: Thu, 2 Sep 1999 16:28:17 +1000
X-Mailer: Microsoft Internet Mail 4.70.1161
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Afternoon most (not those overseas),
A few people have mentioned storms in the Wagga area. I can actually just
see the top of a fairly decent sized Cb to my NE - prolly no less than
200km away. A few TCu within 100km but nothing worth photoing yet. Any
melbournites could see this cell if they had a decent view to the NE - its
ages away but still - its there. Just spoke to my uncle and he confirmed
storms to the S of Wagga and near Wodonga.
Andrew McDonald
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025
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: aus-wx: Early-season warmth
To: aussie-weather at world.std.com (Aussie Weather)
Date: Thu, 2 Sep 1999 17:22:37 +1000 (EST)
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Quite warm at the moment in southern Australia, particularly in
South Australia.
Ceduna reached 33 (rounded) today. If this topped 33.0 this would
be the warmest there so early in the season (although only just -
they've been to 34.6 on September 3).
Adelaide is forecasting 29 tomorrow, and Melbourne 25. Their
respective early-season records are 29.1 and 26.5. No September
records are under threat, of course (Ceduna has been as high as 39.7
in September).
Blair Trewin
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026
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: Above Average Rainfall
Date: Thu, 2 Sep 1999 17:39:10 +1000
X-Mailer: Microsoft Outlook Express 5.00.2014.211
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The SE NSW ones are still using garden hoses as rainfall is well below over
last 3 months. I seem to have missed everything lately. The models are even
suggesting that the NSW south and Illawarra coasts will miss the weekend
action too.
Michael
>
> How have our NE NSW counterparts faired?
>
> --
> Anthony Cornelius
> Queensland Coordinator of the Australian Severe Weather Association
> (ASWA)
> (07) 3390 4812
> 14 Kinsella St
> Belmont, Brisbane
> QLD, 4153
> Please report severe thunderstorms on our Queensland severe thunderstorm
> reporting line on (07) 3390 4218 or by going to our homepage at
> http://www.severeweather.asn.au
>
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> -----------------------jacob at iinet.net.au------------------------------
>
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027
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: FNMOC self updating page
Date: Thu, 2 Sep 1999 18:06:06 +1000
X-Mailer: Microsoft Outlook Express 5.00.2014.211
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Thanks Michael, the great effort is appreciated.
Michael
> Hi all,
>
> Now I know the images are there....
>
> I have created a self updating page that takes care of the
> urls with the dates in them.
>
> The update time is 2 am/pm in WA
>
> and 4am/pm in the Eastern States
>
> Check out
>
> http://strikeone.com.au/blue/temp/appl.cgi?fnmoc=display
>
> Regards
> --
> Michael Fewings
>
> Photographer of:
> Strike One Lightning Photos
> http://strikeone.com.au
>
> Web Master of:
> Australian Severe Weather Association Inc.
> http://www.severeweather.asn.au
>
>
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> with "unsubscribe aussie-weather your_email_address" in the body of your
> message.
> -----------------------jacob at iinet.net.au------------------------------
>
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028
From: "Michael Thompson" [michaelt at ozemail.com.au]
To: [aussie-weather at world.std.com]
Subject: Re: aus-wx: seabreeze and storms
Date: Thu, 2 Sep 1999 17:46:12 +1000
X-Mailer: Microsoft Outlook Express 5.00.2014.211
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Anthoney or Ben would be better placed to comment on the Queensland
conditions.
I know here in the Illawarra we have a micro climate caused by the Illawarra
escarpment. It acts very well to turn the seabreeze into a nice inversion.
In Sydney there is a definate seabreeze front that moves inland as day
progresses, reaching Sydney's far west not until late afternoon or even
evening. The convection in Sydney's west is not killed early . Unlike the
Illawarra where the seabreeze makes it to the escarpment by mid morning, not
only that but the escarpment provides a perfect setup for an inversion,
there is no vertical seabreeze front as such at all. Convection is usually
nil.
Michael
>
> Hi Michael (et al.),
>
> It sounds to me like the convergence zone between the NE seabreeze
> and a northwesterly "inland surface flow" is prime initiation region
> for storms. However, at least some storms must form further inland,
beyond
> the seabreeze region of influence. I am still wondering
> how the dewpoint in, say, November changes from quite high (near Brisbane)
> to quite low (500 km west of Brisbane). Is this transition sharp
> (over a few tens of kilometres), or does it change gradually?
>
> I am not surprised that no storms form in the NW flow -
> nothing to eat for hungry storms.
>
> Harald
>
>
> ----- Forwarded message from Michael Thompson -----
>
> >From aussie-weather-approval at world.std.com Wed Sep 1 13:02:59 1999
> Message-ID: <006301bef477$57e71480$35e66ccb at ozemail>
> From: "Michael Thompson"
> To:
> References: <199908311433.OAA15001 at acacia.atmos.albany.edu>
> Subject: Re: aus-wx: Who am I?
> Date: Wed, 1 Sep 1999 22:19:19 +1000
> X-Priority: 3
> X-MSMail-Priority: Normal
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> Precedence: list
> Reply-To: aussie-weather at world.std.com
>
> Hi Harald
>
> It is a pity you missed our sea breeze discussion a few months ago. The
sea
> breezes role in storms was hotly debated. There is no doubt that the
> seabreeze front influences storms in both states.
>
> Perhaps not a dryline in the US sense but often we get a NW wind pushing
> ahead of front, typically September - December. On the coast the NE sea
> breeze usually overpowers it. I have noticed time again that the best
storm
> activity occurs as the NW wind finally pushes aside the seabreeze. It is a
> dual edge sword though as nothing ever forms behind the NW wind.
>
> Michael
>
> >
> > As the trailer to my emails sate, I am currently based in Albany, NY,
> > attempting to use a mesoscale model (MM5) in the search for answers
> > on how thunderstorms form. Of particular interest to me is the
> > initiation of convection along so-called "drylines" - near-surface
> > boundaries separating high dewpoint from low dewpoint air.
> > One thing that would interest me a fair bit is evidence for
> > the existence and storm initiation role of those drylines
> > in Australia, particularly in NSW and QD. I have a funny
> > feeling that a number of the big storms there do actually
> > fire off the dryline. You can get special chaser satisfaction
> > out of observing those storms initiate on such a boundary, and
> > then monitor them for hours as they move E (NE,SE) and
> > develop all sorts of features, if you're lucky.
> >
> > Why am I on this list? I lived on Melbourne
> > for almost all of this decade, and plan to return
> > after spending some more time with the National
> > Severe Storms Laboratory (NSSL) in Norman, Oklahoma.
> > I could post some of the chase experiences I might have in
> > the US, but as that is not Australian weather it would
> > be off topic, right?
> >
> > Lots of CAPE, Harald
> >
> >
> >
> > ----- Forwarded message from Jane ONeill -----
> >
> > Welcome to the aussie-weather list !!
> >
> > I hope you enjoy the list and the friendships that develop from it as
much
> > as we do.
> >
> > You might like to introduce yourself by sending an email to
aussie-weather
> > with the following details as well as a short resume and your particular
> > area of interest.
> >
> > It would be useful if other members could know some or all of the
> following:
> >
> > Name, Suburb/Town, State, ICQ No (if you have one), Home Phone no,
Mobile,
> > Nick, email address, homepage URL.
> >
> > [snip][snip]
> >
> > ----- End of forwarded message from Jane ONeill -----
> >
> > --
> > ------------------------------------------------------
> > Harald Richter
> > Postdoctoral Research Associate
> > Department of Earth and Atmospheric Sciences
> > State University of New York at Albany
> > 1400 Washington Avenue
> > Albany, NY 12222
> > phone: (518) 442-4273 fax: (518) 442-4494
> > spatz at atmos.albany.edu
> > http://www.atmos.albany.edu/facstaff/spatz/spatz.html
> > ------------------------------------------------------
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> > message.
> > -----------------------jacob at iinet.net.au------------------------------
> >
>
>
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>
> ----- End of forwarded message from Michael Thompson -----
>
> --
> ------------------------------------------------------
> Harald Richter
> Postdoctoral Research Associate
> Department of Earth and Atmospheric Sciences
> State University of New York at Albany
> 1400 Washington Avenue
> Albany, NY 12222
> phone: (518) 442-4273 fax: (518) 442-4494
> spatz at atmos.albany.edu
> http://www.atmos.albany.edu/facstaff/spatz/spatz.html
> ------------------------------------------------------
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>
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029
X-Sender: jra at upnaway.com
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Date: Thu, 02 Sep 1999 05:07:32 +0800
To: aussie-weather at world.std.com
From: Ira Fehlberg [jra at upnaway.com]
Subject: aus-wx: Possible Tornado in WA this arvo and latest warnings!
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Well folks looks like we are in for one wild night here in WA. The sat pics
show up the front good!
http://www.npmoc.navy.mil/satimages/gmsc.jpg
Also ASWA Nathan from Busselton has heard of a "mini" tornado already this
arvo at Capel. His dad runs the SES in the area and heard of it. Roofs of
and damage to a school there. Pray someone got pics. Nath will keep us
posted as details come to hand. This second front looks much better and id
say we should see at least another nader before the night is out. Check out
the warnings just out below, the BOM are going for 130kph!!!!
Ira (geeze I love living in WA) Fehlberg :P
PRIORITY
FOR IMMEDIATE BROADCAST
SEVERE THUNDERSTORM ADVICE
Issued at 4:45 pm WST on Thursday, 2 September 1999
People in the Lower West, South West and western parts of the Southern
Coastal
Districts, including the Perth Metropolitan area, Mandurah, Bunbury and
Albany,
are advised that there is a risk of severe thunderstorms during tonight.
Storms may be accompanied by hail, flash flooding and damaging winds.
The State Emergency Service advises that people should keep a lookout for
thunderstorms and if storms approach secure loose items, move vechicles under
cover, then stay indoors until the storms have passed. Driving conditions
may be
hazardous.
A Severe Wind Warning remains current.
This Thunderstorm Advice will be updated at 8:00pm.
SEVERE WIND WARNING
Issued at 4:45 pm WST on Thursday, 2 September 1999
For the Lower West, South West and western parts of the Southern Coastal
Districts, including the Perth Metropolitan area, Mandurah, Bunbury and
Albany.
A front and associated low is expected to move into the lower south west
tonight.
Expect damaging wind squalls to 130 kilometres per hour tonight with the
passage
of the system.
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030
X-Sender: astroman at mail.chariot.net.au
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Date: Thu, 02 Sep 1999 19:06:25 +0930
To: aussie-weather at world.std.com
From: Andrew Wall [astroman at chariot.net.au]
Subject: Re: aus-wx: January 21 1991 supercell no.1
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Adelaide also experienced a split Supercell on the 22nd of January 1991,
bringing large hail, very strong winds, heaps of rain, and heaps of
Lightning, and there was even reports of a few tornados out of these two
systems. The hail measured up to a cricket ball in size and the storms
produced over 25 million dollars worth of damage.
The thing I am not sure about was that one system was rotating in a
clockwise direction and the other one was moving in an Anti-clock wise
direction. I think this is what produced it's severity.
Unfortunately, I was too young to remember it in detail, but it has always
made me wonder, where and when is our next one due..
At 21:32 1/09/99 +1000, you wrote:
>I have just received word about a supercell that occurred on the fateful
>day of 1991 but earlier than the reintensified cell of Turramurra. This
>cell was described by the people who live at Oakdale to the SW of Sydney
>near Camden as having monsterous hail lasting 20 minutes completely
>shattering windows, deeply denting corrugated iron roofs, and their son was
>knocked unconscious by a hailstone!!! I will gather more information on this.
>
>Jimmy Deguara
>
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031
Date: Thu, 02 Sep 1999 20:52:48 +1000
From: Ben Quinn [bodie at flatrate.net.au]
X-Mailer: Mozilla 4.61 [en] (Win95; I)
X-Accept-Language: en
To: aussie-weather at world.std.com
Subject: aus-wx: The Australian Weather Pages Webring
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hey Ben from Brisbane here..
This email only concerns the members of The Australian Weather Pages
Webring.. This is the easiest way for me to communicate to the 15
members of the webring..
Unfortunately webring.org has some kind of problem with their computers
and the webring was pretty much deleted from the system.. I was told
that the webring would be restored (from the backups they keep) within
48 hours.. 2 weeks later I am still waiting.. so I am going to have to
ask everyone to make their way to the webring homepage and re-submit
their sites..
The URL is:
http://www.flatrate.net.au/~bodie/aussiewxwebring/index.htm
Sorry about all the hassle, but it was out of my control.. and
webring.org have basically ignored 10 or more emails from me over the
past few weeks.. grrrr
Andrew Wall wrote:
>
> Adelaide also experienced a split Supercell on the 22nd of January 1991,
> bringing large hail, very strong winds, heaps of rain, and heaps of
> Lightning, and there was even reports of a few tornados out of these two
> systems. The hail measured up to a cricket ball in size and the storms
> produced over 25 million dollars worth of damage.
> The thing I am not sure about was that one system was rotating in a
> clockwise direction and the other one was moving in an Anti-clock wise
> direction. I think this is what produced it's severity.
>
> Unfortunately, I was too young to remember it in detail, but it has always
> made me wonder, where and when is our next one due..
>
> At 21:32 1/09/99 +1000, you wrote:
> >I have just received word about a supercell that occurred on the fateful
> >day of 1991 but earlier than the reintensified cell of Turramurra. This
> >cell was described by the people who live at Oakdale to the SW of Sydney
> >near Camden as having monsterous hail lasting 20 minutes completely
> >shattering windows, deeply denting corrugated iron roofs, and their son was
> >knocked unconscious by a hailstone!!! I will gather more information on this.
> >
> >Jimmy Deguara
> >
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> > message.
> > -----------------------jacob at iinet.net.au------------------------------
>
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032
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Date: Thu, 02 Sep 1999 21:17:01 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jdeguara at ihug.com.au]
Subject: aus-wx: Damage photos
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi every1,
In light of the discussion about the mini-tornado at Fairfield West, the
photos are now online. Try and take a look through the category section of
"storm damage" at the following:
http://www.australiansevereweather.simplenet.com/photography/index.html
It should be at the end of page 4 and all of page five and then click on
the thumbs to view as usual.
Jimmy Deguara
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033
Date: Thu, 02 Sep 1999 18:19:06 +1000
From: Peter Matters [pmatters at eck.net.au]
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Storms in NE VIC
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi all,
Re the NE Vic storms, at 3.30pm I saw these storms from Puckapunyal.
One had an overshooting top but I couldn't ring the BoM as my phone was down.
Cheers Peter(Didjman)
McDonald wrote:
> Afternoon most (not those overseas),
>
> A few people have mentioned storms in the Wagga area. I can actually just
> see the top of a fairly decent sized Cb to my NE - prolly no less than
> 200km away. A few TCu within 100km but nothing worth photoing yet. Any
> melbournites could see this cell if they had a decent view to the NE - its
> ages away but still - its there. Just spoke to my uncle and he confirmed
> storms to the S of Wagga and near Wodonga.
>
> Andrew McDonald
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> -----------------------jacob at iinet.net.au------------------------------
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034
Date: Thu, 02 Sep 1999 20:31:28 +0800
From: Mark Dwyer [mjd at wantree.com.au]
X-Mailer: Mozilla 4.61 [en] (Win98; I)
X-Accept-Language: en
To: "aussie-weather at world.std.com" [aussie-weather at world.std.com]
Subject: aus-wx: Perth WX
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi there all just an update on the perth Wx atm, it's currently calm, is
this the calm before the storm latter tonight. The front is due at
around midnight WST, The weather has already caused a near air disaster
at Perth Airport early this avo. It involved a Qantas 747 200 on
approaching for landing for the second time it was hit by a suspected
micro burst (yet to be confirmed ) investigation has been launched. The
jumbo's number one engine hit the runway on landing ( scraped along the
runway) as it landed. None of the planes passengers were injured in the
incident. But more Wx is to come tonight keeps ya's posted on any more
development
IDW10W00
BUREAU OF METEOROLOGY
WESTERN AUSTRALIAN REGIONAL OFFICE
PRIORITY
FOR IMMEDIATE BROADCAST
SEVERE THUNDERSTORM ADVICE
Issued at 7:55 pm WST on Thursday, 2 September 1999
People in the Lower West, South West and western parts of the Southern
Coastal
Districts, including the Perth Metropolitan area, Mandurah, Bunbury and
Albany,
are advised that there is a risk of severe thunderstorms during tonight.
Storms may be accompanied by hail, flash flooding and damaging winds.
The State Emergency Service advises that people should keep a lookout
for
thunderstorms and if storms approach secure loose items, move vechicles
under
cover, then stay indoors until the storms have passed. Driving
conditions may be
hazardous.
A Severe Wind Warning remains current.
This Thunderstorm Advice will be updated at 11:00pm.
IDW11W00
BUREAU OF METEOROLOGY
WESTERN AUSTRALIAN REGIONAL OFFICE
PRIORITY
FOR IMMEDIATE BROADCAST
SEVERE WIND WARNING
Issued at 7:55 pm WST on Thursday, 2 September 1999
For the Lower West, South West and western parts of the Southern Coastal
Districts, including the Perth Metropolitan area, Mandurah, Bunbury and
Albany.
A front and associated low will move into the lower south west tonight.
Expect wind squalls to 130 kilometres per hour tonight, strong enough to
damage
roofs and bring down trees, with the passage of the system.
The State Emergency Service advises that people should secure loose
objects and
stay indoors when gales develop. Boat owners should ensure that small
craft are
securely moored.
The next advice will be issued at 11:00pm.
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035
X-Sender: jdeguara at pop.ihug.com.au
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Date: Thu, 02 Sep 1999 22:44:13 +1000
To: aussie-weather at world.std.com
From: Jimmy Deguara [jdeguara at ihug.com.au]
Subject: aus-wx: Storms on the way
Sender: aussie-weather-approval at world.std.com
Reply-To: aussie-weather at world.std.com
Hi
It looks as though things are going to be quite interesting over the next
few days as Ben said over SE Australia. I hope a N airstream dominates though.
One thing I have noticed is that glaciating is occurring with some cumulus
at lower levels. Imagine if you push straight through... Almost any storms
that have occurred lately have produced at least tiny hail. I think
hailstorms won't be so uncommon this Spring. Well action for chasers but
not so good for farmers and so on. But then again, that's life....
Jimmy Deguara
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| Document: 990902.htm
Updated: 09 September 1999 |
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