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Australian Weather Mailing List Archives: Thursday, 12 August 1999 |
From Subject
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001 Chas & Helen Osborn [hosborn at tassie.net.au] Anyone think Sydney / Illawarra weather odd today ?
002 Blair Trewin [blair at met.Unimelb.EDU.AU] The impending cold outbreak
003 Lindsay [writer at lisp.com.au] Snow in NSW
004 Ben Quinn [bodie at flatrate.net.au] Re: Strong Winds, Cold Outbreak
005 Michael Scollay [michael.scollay at telstra.com. MRF Model Anomaly - was RE: Strong Winds, Cold Outbreak
006 Michael Scollay [michael.scollay at telstra.com. MRF Model Anomaly - was RE: Strong Winds, Cold Outbreak
007 "Ben Tichborne" [tich at netaccess.co.nz] What if there were much higher mountains in Northern Austral
008 "Jane ONeill" [cadence at rubix.net.au] Melbourne conditions
009 Blair Trewin [blair at met.Unimelb.EDU.AU] Anyone think Sydney / Illawarra weather odd today ?
010 "McDonald" [mcdonald at one.net.au] Melbourne - SDS cured (for now)
011 Anthony Cornelius [cyclone at flatrate.net.au] Melbourne conditions + T'Storms
012 "Jane ONeill" [cadence at rubix.net.au] Melbourne report
013 Chas & Helen Osborn [hosborn at tassie.net.au] Anyone think Sydney / Illawarra weather odd today ?
014 "Nandina Morris" [nandina at alphalink.com.au] Melbourne conditions
015 "Chris Gribben" [chrisgribben at hotmail.com] Melbourne Storm
016 "Daniel Weatherhead" [dpw14 at hotmail.com] Tommorrow night & VPD
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001
Date: Wed, 11 Aug 1999 18:06:17 +1000
From: Chas & Helen Osborn [hosborn at tassie.net.au]
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Subject: Re: aus-wx: Anyone think Sydney / Illawarra weather odd today ?
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Hello Everyone
I have a cousin who farms near Leithbridge Alberta Canada (SE of
Calgary) and I
was fortunate to live there for six months. They have a f�hn effect, I
think its
called the Chinook, which at times can be very strong. The westerly wind
is
drained of its moisture by rising over the Rockies and warms on its way
down to
the prairies. Leithbridge is supposed to have a very high suicide rate
as well as
a lot of depression because of this wind. My cousin farms on the
prairie, just to
the east but insight of the Rockies, and has to work his paddocks so the
wind will
blow across the rows and leave his stubble long, as a wind break, to
catch the
snow so when it melts it will provide moisture for the summer crops. In
the winter
they can have huge temperature changes. I wasn't there for winter but I
think the
change is from warm 0C to 5C with the f�hn effect to well below freezing
when the
wind moves from the west. They obviously have a snow melt with these
temperatures.
The provinces further east retain their snow for most of the winter and
their
lakes remain frozen so this helps to produces the best ice hockey
players.
A nice but windy day today (locally called a Down Breeze because it
blows down the harbour - Northerly - and indicates a change in the
weather) with temp around 15C. The local BOM are not getting
very excited about the next change but like others on the list have said
they will
release appropriate warnings as required.
Chas
Strahan Tasmania
ps somebody cut the telephone cable out of town! so there might be a
time delay between me writing this and you receiving.
Lindsay wrote:
> The Foehn effect?
>
> Andrew Miskelly wrote:
> >
> > Michael,
> >
> > I too saw the snow clouds - nice little anvils and all - and thought the
> > same thing, it seemed really warm. Maybe it was the same effect as they have
> > in the swiss alps, what's it called again? As the air descends it gets
> > warmer, but very much so over there - it's a big concern with avalanches and
> > what not...
> >
> > Andrew.
> > --
> > Andrew Miskelly
> > Illawarra/Southern Tablelands, NSW
> > amiskelly at ozemail.com.au
> >
> > -----Original Message-----
> > From: Michael Thompson
> > To: aussie-weather at world.std.com
> > Date: Monday, 9 August 1999 21:46
> > Subject: aus-wx: Anyone think Sydney / Illawarra weather odd today ?
> >
> > >Mildest morning in a few weeks, or so it felt on the pushbike this morning.
> > >However there was snow clouds to the west, albeit at moderate altitude, so
> > >real snow line was perhaps well over 1200m.
> > >
> > >This afternoon some Cb to the east and a nice wintery looking cell to the
> > >south.
> > >
> > >
> > >Michael Thompson
> > >http://thunder.simplenet.com
> > >
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002
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: aus-wx: The impending cold outbreak
To: aussie-weather at world.std.com (Aussie Weather)
Date: Thu, 12 Aug 1999 10:13:57 +1000 (EST)
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All the models I've seen now seem to be converging towards a minimum
thickness around 530 for Melbourne on Friday.
Let's face it, in any normal year we wouldn't be getting too excited
about 530 in August (in 1995, we'd have been saying 'only 530? yawn').
It's only because we haven't seen anything that vaguely resembles a
cold outbreak in two months (a below-average maximum would be a start
- we haven't been more than a degree below average on any day since
the Queen's Birthday Saturday) that we're getting so excited about
this one.
Also, as mentioned in my post yesterday, a low maximum in August takes
some doing because most decent cold outbreaks have sunny intervals
and the sun is strong enough to kick the temperature upwards during
them, even if briefly. Unless it's a REALLY cold airmass (e.g.
5 September 1995), to get a sub-10 maximum in August requires
persistent cloud cover, preferably steady rain (or even persistent
fog, although that is less likely than in June or July - and is less
likely in general than it was 20 years ago because of improved air
quality). Melbourne experiences a sub-10 maximum in August about one
year in six through the record as a whole, and hasn't had one in
August since 1978 (although there was one in September in 1995).
(This includes some cold outbreaks much more extreme than anything
likely this time: 25-26 August 1997 had thicknesses below 520, yet
the lowest max we got was 12 - although in mitigation the coldest
air did come through at night, and it was relatively dry, much to my
disappointment as I'd gone to bed on the Saturday night half-
expecting to wake up to snow on the Albert Park beach on Sunday
morning).
Trewin's forecast for Friday in Melbourne: 12.
Blair Trewin
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003
Date: Thu, 12 Aug 1999 10:15:10 -0700
From: Lindsay [writer at lisp.com.au]
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Subject: Re: aus-wx: Snow in NSW
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I'm hoping we might get something like the one in August last year, when
it came at night. Only an inch or two of snow but it did poor down in
the strong winds before being blown away. REckon it could be like that
one?
Lindsay p
Laurier Williams wrote:
>
> On Tue, 10 Aug 1999 21:58:27 -0700, Lindsay
> wrote:
>
> >So, in saying that, do you reckon its a reasonable chance that
> >Blackheath might get some?
> >
> >
> >Lindsay P.
>
> Yes, Lindsay, I do, but not a lot.
>
> Perhaps unsurprisingly, the globals (00z run today Wednesday) have all
> eased off the extreme event they were forecasting, though GASP and the
> EC are still going for a pretty major cold snap. I agree with Blair --
> things look most interesting for Victoria, with an 850hPa temp of -5
> predicted over NE Vic for Sat am. Main item missing (or substantially
> reduced) in the latest runs is the strong upper southerly jet. The MRF
> basically spilts the jet into northern and southern limbs, with a void
> over NSW. This has the effect of reducing the surge of cold upper air
> over the state, but means that the 850 temps stay quite cold through
> the weekend while the winds turn S to SSE, so that could be
> interesting.
>
> For Sydney residents, Saturday morning still looks interesting. MRF
> has a thickness of about 537 over the Blue Mtns at 00z Sat, while GASP
> has 532 at that time, with a fresh SSW flow, a lot more southerly than
> usual for events like this. The EC has a deep slightly cut off low of
> 5440 at 500hPa over central NSW at 12z on Friday. I don't doubt that
> it'll be cold enough for snow on the Blue Mtns, but the problem will
> be the usual one of whether there'll be enough precip left in the
> system by the time the cold air arrives. The models I've seen have the
> rain with the front, and clearing by the time the colder air comes
> through, with precipitable water indices pretty low. The Illawarra
> high country might be interesting, with a forecast thickness of 532
> and strong SSW winds making precip marginal but quite possible!
>
> I suspect that in this, as in so many marginal situations, everything
> will depend on the relatively minor variations from the global
> forecasts that exist on the day. I still think it'll be a great day
> for watching real-time weather, and especially looking for CVA
> developments in the hourly satpix. I'll be at Blackheath, stoking the
> fires and hoping for a dump!
>
> --
> Laurier Williams
> Australian Weather Links and News
> http://www.ozemail.com.au/~wbc/
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> -----------------------jacob at iinet.net.au------------------------------
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004
Date: Thu, 12 Aug 1999 10:55:32 +1000
From: Ben Quinn [bodie at flatrate.net.au]
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Subject: Re: aus-wx: Re: Strong Winds, Cold Outbreak
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Hey Lindsay, Everyone..
I'm not sure what the models are forecasting now.. but the they are just
as likely to tone down a situation like this as it approaches as they
are to keep at it at the forecast strength.. when looking at a model
forecast for Friday - on Monday or Tuesday - i treat it with EXTREME
caution.. and obviously the BOM do too..
Some models may be more guilty of this than others.. such as MRF.. i
have noticed that MRF likes to hammer SE Australia with upper systems at
120 and 144 hours.. but by the time the system is inside 72 hours range
it has already toned it right down, and by 48 hours things are looking
much more conservative..
If the BOM were to start forecasting this system (and taking the models
more seriously) at 48 hours out.. then i would consider that more than
acceptable..
I think if we all remember who the experts are here then we can probably
learn allot from the BOM.. I am not trying to stir the pot here or
offend anyone.. but i think sometimes it comes down to whether you think
a forecast is a bad forecast, or whether you don't like it because it's
not what you want!
On a slightly different note.. it looks like we will feel the effects of
this cold outbreak up here too on the weekend.. also an upper level
system may make things a little interesting on Satuday..
Lindsay wrote:
>
> So why would they be so conservative (if indeed they are) is my
> question? Is it because such forecasted conditions fall outside of what
> would normally be expected (especially this year) and they are just
> watching and waiting? I am just trying to learn here, not provoke
> argument or tension towards the Bureau.
>
> Lindsay P.
>
> Mark Hardy wrote:
> >
> > Still. Almost most people on this list agree a VERY cold outbreak is VERY
> > likely. So their forecast of 14 for Melbourne on Friday appears very
> > strange. A cold outbreak of the magnitude predicted by the models would
> > normally give a max of 10 (tops). Even Sydney is going to 14 on Saturday
> > which is extremely cold for Sydney. I disagree Michael. In this case they
> > should be doing more to alert people of the potential of very cold weather.
> > It makes no sense to me to sit on the fence in the face of all the evidence
> > presented by ALL the models
> >
> > Mark
> > --
> > _____________________________________________________
> > 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: "Michael Thompson"
> > >To:
> > >Subject: Re: aus-wx: Re: Strong Winds, Cold Outbreak
> > >Date: Tue, 10 Aug 1999 7:46 PM
> > >
> >
> > > If you are talking about the BOM forecasts ( not GASP model ) then I see
> > > their logic, you will find that the 3-4 day ahead forecasts are very
> > > conservative, and so they should be. You will probably find that they know
> > > very well about the potential situation and will refine the forecasts the
> > > closer we get. Strange as it seems it is one area in which I agree with what
> > > they do.
> > >
> > > Michael
> > >
> > >
> > >
> > >
> > >> outbreak with thickness forecast as low at 528 friday night (i think).
> > > The
> > >> BoM seems to think it won't be quite as cold as the models are making out
> > >> but Idon't know why. Last time I checked - the worst outlook (as in the
> > >
> > >
> > >
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> > > message.
> > > -----------------------jacob at iinet.net.au------------------------------
> > >
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> > message.
> > -----------------------jacob at iinet.net.au------------------------------
>
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005
Date: Thu, 12 Aug 1999 12:02:38 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: aus-wx: MRF Model Anomaly - was RE: Strong Winds, Cold Outbreak
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Ben Quinn wrote on Thu, 12 Aug 1999 10:55:32 +1000:
> ...
> Some models may be more guilty of this than others.. such as MRF.. i
> have noticed that MRF likes to hammer SE Australia with upper systems at
> 120 and 144 hours.. but by the time the system is inside 72 hours range
> it has already toned it right down, and by 48 hours things are looking
> much more conservative...
[snip]
Issue of medium-term forecasts aside. In my use of AVN/MRF data during
the last 2 months with some post-processing that I do to obtain a more
reasonable automated forecast for Perisher Valley, I have confirmed a
very interesting baseline anomaly in MRF that I will raise with READY
initially and ultimately NCEP if it proves valid. This is it;
MRF Baseline Anomaly: Consistently, from +180hrs to +244hrs, the
Surface Pressure assumed at specific location -36.41S, 148.41E is
increased from a mean of about 935mb at +168hrs to a mean of 980mb
at +180hrs. This Surface Pressure alteration may arise from an
alteration in the MRF baseline topography assumption that would
adversely affect a much greater area, given that the model is run
at a 191km resolution. Nevertheless, it would have a profound impact
on the MRF forecast model outcomes from +180hrs to +244hrs.
My questions are:
1) Given such a fundamental flaw, what other flaws may be in the
MRF model that leads to excessive error at other forecast times?
2) Is the baseline Surface Pressure anomaly a systematic error
induced in the MRF model. In other words, are particular factors
being reiterated from previous forecast outcomes that lead to
a significant systematic error from +180hrs?
I think the above might well explain the somewhat exaggerated
forecasts that Ben has mentioned.
Michael Scollay mailto:michael.scollay at telstra.com.au
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006
Date: Thu, 12 Aug 1999 12:30:57 +1000
From: Michael Scollay [michael.scollay at telstra.com.au]
Organization: Telstra Strategy & Research
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: MRF Model Anomaly - was RE: Strong Winds, Cold Outbreak
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Michael Scollay wrote on Thu, 12 Aug 1999 12:02:38 +1000
>...
> MRF Baseline Anomaly: Consistently, from +180hrs to +244hrs...
[snip] ^^^^^^^
Please note that +244hrs should read +288hrs in my previous mail.
This is the current forecast limit of MRF made available through
READY.
Michael Scollay mailto:michael.scollay at telstra.com.au
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007
From: "Ben Tichborne" [tich at netaccess.co.nz]
To: [aussie-weather at world.std.com]
Subject: aus-wx: What if there were much higher mountains in Northern Australia?.
Date: Thu, 12 Aug 1999 15:07:03 +1200
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How high would the mountains have to be in those areas (northern parts of
Queensland, NT, and WA) to get snow?. I thought of this after I heard about
recent winter situations where (I thinks that was the case) cold air from
the south undercutted existing (or coming from the north) cloud and
moisture systems, and gave unusually low maximums to northern Australia.
A partly cloudy (high cloud) day here in Christchurch. Some brief rain was
earlier forecast, but none eventuated. The Metservice long-range forecasts
suggest some rain this weekend, but they don't give any more details (but
do they ever these days?) about whether there will be a cold outbreak.
(they do suggest a colder southwesterly change for Monday)
Ben Tichborne
Christchurch
NZ
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008
From: "Jane ONeill" [cadence at rubix.net.au]
To: "Aussie Weather" [aussie-weather at world.std.com]
Subject: aus-wx: Melbourne conditions
Date: Thu, 12 Aug 1999 15:19:30 +1000
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The Melbourne area is at present experiencing showers moving NW - SE. There
has been a report of a 20-40mm/hr move across the Bay to
Mornington which has recorded sporadic electrical activity There
are some nice cold Cbs to the south.............................I think it
may be time to come back to life fellow Melbournians - the chase season may
be about to begin ..........
Jane ONeill
Bayswater, Melbourne
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009
From: Blair Trewin [blair at met.Unimelb.EDU.AU]
Subject: Re: aus-wx: Anyone think Sydney / Illawarra weather odd today ?
To: aussie-weather at world.std.com
Date: Thu, 12 Aug 1999 16:24:09 +1000 (EST)
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>
> Yeah, the Foehn wind. Doesn't that act as a warming (part of it) factor
> on the south westerlies as they sink into the Sydney basin? Like the
> other day Orange was seven degrees and Sydney was twenty. Apparently
> this wind is cooler at the same altitude on the west side of the range
> as say the same altitude on the east side of the range. Latent heat from
> condensation and the type of lapse rate? I'm just guessing, still
> learning about all of this.
>
> Lindsay P.
>
Yes, latent heat is essentially it - roughly speaking, as air moves over
a mountain range, the rising air cools relatively slowly (6.5 C/1000m,
as an average) because of the latent heat of condensation. However,
as there is no additional condensation as the air descends on the
other side, it warms at approximately 10 C/1000m, so the eventual
temperature at the same elevation on the eastern side will be warmer
- providing the air is moist enough for condensation to occur at some
stage during its passage.
Having said that, the rapid temperature changes during a classical
Rocky Mountain or Swiss chinook/foehn also have a fair bit to do with
the origin of the air masses involved, and the collapse of low-level
inversions (especially in winter). In the case of, say, Calgary, it's
not unknown for an air mass to become established with a surface
temperature of, say, -30 C, but with an inversion of 20 C or more
in the lower levels. A chinook will do two things:
- the associated winds will kill the inversion
- the polar continental air mass is replaced by one of Pacific origin,
which, even in winter, will typically have a temperature of 5-10 C
so a large part of the temperature change is an air mass change. North
America (and, to a lesser extent, central Asia) is famous for very
rapid temperature changes because of the existence of sharply
contrasting air masses, and the lack of topographic barriers to their
north-south movement east of the Rockies. These rapid changes can
occur well away from the mountains; in February 1989 Dallas had
maximum temperatures of 31 C and -8 C on successive days. (This also
reminds me of my visit to Boulder, Colorado in September 1993; it had
been 34 C on the Sunday, several centimetres of snow fell on the
Monday, and when I arrived on the Tuesday there was still snow on the
ground in shaded areas, but temperatures were in the low 20s).
You don't get such dramatic changes with foehn winds on the east
coast of Australia because the original temperature of the air masses
involved don't differ as sharply (instead, the sharp changes tend
to be the temperature falls as the foehn is replaced by onshore flow).
Blair Trewin
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010
From: "McDonald" [mcdonald at one.net.au]
To: [aussie-weather at world.std.com]
Subject: aus-wx: Melbourne - SDS cured (for now)
Date: Thu, 12 Aug 1999 16:41:52 +1000
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IDW10V00
BUREAU OF METEOROLOGY
VICTORIAN REGIONAL OFFICE
Thunderstorm Warning
Issued at 1611 on Thursday the 12th of August 1999
forThursday afternoon and evening Isolated thunderstorms are possible over
the metropolitan area, particularly over the Mornington Peninsula, for the
remainder of the afternoon before clearing this evening.
Spectacular storms over the Bay and new ones forming to the NW.
Check out the web cams....
http://webcam.omni.net.au/
ENJOY - I AM!!!!!!!
Andrew McDonald
BTW - radar went red for a short while.
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011
Date: Thu, 12 Aug 1999 19:57:49 +1000
From: Anthony Cornelius [cyclone at flatrate.net.au]
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Melbourne conditions + T'Storms
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Hi all,
After seeing a very nice guster on the Melbourne webcam, I rang Jane's
mobile who I suspected might be out "amongst the action" ...and...
surprise surprise, she was! :)
She had some nicish rain it seemed (from what I could hear on the phone)
and there she reported there was some occassional lightning/thunder and
that Clyve witnesses 1cm hail and torrential rain (I hope I'm not
intruding on your info here Jane, I hope not!)
Jane had to hang up shortly though, as she had a rather close lightning
strike, I could hear the thunder crack on the phone...it was great! I
haven't heard "live thunder" in months!! This is something we can do
for our fellow SDS sufferers...leave the mobile phone on to some one
listening on the other end for "live thunder"
Anthony from Brisbane
Jane ONeill wrote:
>
> The Melbourne area is at present experiencing showers moving NW - SE. There
> has been a report of a 20-40mm/hr move across the Bay to
> Mornington which has recorded sporadic electrical activity There
> are some nice cold Cbs to the south.............................I think it
> may be time to come back to life fellow Melbournians - the chase season may
> be about to begin ..........
>
> Jane ONeill
> Bayswater, Melbourne
>
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012
From: "Jane ONeill" [cadence at rubix.net.au]
To: "Aussie Weather" [aussie-weather at world.std.com]
Subject: aus-wx: Melbourne report
Date: Thu, 12 Aug 1999 22:00:43 +1000
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Clyve Herbert rang and reported another Victorian train chase - and the
first core punch of the season!!!!....
-------------------------------------------------------
Clyve reports that......
Things looked interesting after 10am this morning after the passage of a
fizzling cold front across central Victoria. Congesting cumulus streets
developed by mid morning with the first low Cb in sight by 11am. After
leaving Geelong to drive to Melbourne, I could already hear scattered
lightning discharges on my lightning detector (am radio!). I rang Jane to
get a fix on a Cb near Mornington which looked grunty and was told that it
was reflecting 40-100mm/hr. Things looked really interesting with some
serious Cbs punching to the NW of Geelong, although I suspect tops were not
more than 20-25,000'. I noticed also that there was considerable shear
around 20,000', and suspected some serious cold air advection in the middle
and upper layers behind the dissapating cold front.
Finally arriving in Melbourne and running my 1553 Melbourne-Cranbourne, a
line of fast moving Cbs had already moved to the south of Port Phillip Bay
heading eastward. Arriving at Dandenong with my train, I noticed that there
was a continuous rather grunty line of Cbs with occasional cgs aligned
east-west. I rang Jane again to be told that there were echoes in the
Cranbourne area which had peaked at 100+ when the cell crossed the coast
over easter Port Phillip Bay and were now running at 40-100. I left
Dandenong & sped to Cranbourne passing into the Cb line on the outskirts of
Cranbourne encountering 1cm hail, torrential rain, close cg strikes,
lowerings and a gust front. Some of the side streets adjacent to the
railway line were suffering flash flooding. Remarkably the precipitation
line was barely more than 3km wide.
Arriving at Cranbourne in torrential rain, hail & thunder, I then returned
with my train to Dandenong, re-entering the rain core again for barely more
than several minutes, in the meantime capturing a few photographs from the
cab as I sped along. Arriving at Dandenong in dry conditions the line still
appearing to the south, backbuilding towards Melbourne CBD. Andrew McDonald
rang shortly before I arrived in the city to report that he was on his roof
getting very excited by the surprise appearance of such an unseasonal
outbreak. Approaching Melbourne, a large gust front and lowerings appeared
to the south and west of the CBD. A cell to the west passed over the city
at about 1800 with torrential rain & cgs.
.....another successful train chase!!!
Regards,
Clyve Herbert
Leopold, Victoria
-------------------------------------------------------
Andrew McDonald & I had been discussing these same cells during the
afternoon, and I'd also been exchanging a flurry of emails with Peter
Corlett who was sitting in Nauru house in the city staring at nice crisp
TCu's (cameraless), all of us being incredibly frustrated that we couldn't
be out there amongst the action (although I did escape after work after
climbing onto the roof to take a panorama of this 'street' stretching from
one horizon to the other). Also got a nice pic of the gust front - first
time in years I've actually managed to be in the right place at the right
time to see one!! (that is ....... it will be a nice pic if there was enough
light), and Anthony has already attested to the thunder - and my
crackling mobile phone that made me hang up in his ear (sorry bout that...)
Jane ONeill
Bayswater, Victoria
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013
Date: Thu, 12 Aug 1999 20:54:47 +1000
From: Chas & Helen Osborn [hosborn at tassie.net.au]
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To: aussie-weather at world.std.com
Subject: Re: aus-wx: Anyone think Sydney / Illawarra weather odd today ?
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Hello Everyone
I see a "o" with two dots above changes to a "v" when sent in a email!
In my last email f�hn means foehn.
Showers here tonight.
Chas
Strahan Tasmania
Chas & Helen Osborn wrote:
> Hello Everyone
>
> I have a cousin who farms near Leithbridge Alberta Canada (SE of
> Calgary) and I
> was fortunate to live there for six months. They have a fvhn effect, I
> think its
> called the Chinook, which at times can be very strong. The westerly wind
> is
> drained of its moisture by rising over the Rockies and warms on its way
> down to
> the prairies. Leithbridge is supposed to have a very high suicide rate
> as well as
> a lot of depression because of this wind. My cousin farms on the
> prairie, just to
> the east but insight of the Rockies, and has to work his paddocks so the
> wind will
> blow across the rows and leave his stubble long, as a wind break, to
> catch the
> snow so when it melts it will provide moisture for the summer crops. In
> the winter
> they can have huge temperature changes. I wasn't there for winter but I
> think the
> change is from warm 0C to 5C with the fvhn effect to well below freezing
> when the
> wind moves from the west. They obviously have a snow melt with these
> temperatures.
> The provinces further east retain their snow for most of the winter and
> their
> lakes remain frozen so this helps to produces the best ice hockey
> players.
> A nice but windy day today (locally called a Down Breeze because it
> blows down the harbour - Northerly - and indicates a change in the
> weather) with temp around 15C. The local BOM are not getting
> very excited about the next change but like others on the list have said
> they will
> release appropriate warnings as required.
>
> Chas
> Strahan Tasmania
>
> ps somebody cut the telephone cable out of town! so there might be a
> time delay between me writing this and you receiving.
>
> Lindsay wrote:
>
> > The Foehn effect?
> >
> > Andrew Miskelly wrote:
> > >
> > > Michael,
> > >
> > > I too saw the snow clouds - nice little anvils and all - and thought the
> > > same thing, it seemed really warm. Maybe it was the same effect as they have
> > > in the swiss alps, what's it called again? As the air descends it gets
> > > warmer, but very much so over there - it's a big concern with avalanches and
> > > what not...
> > >
> > > Andrew.
> > > --
> > > Andrew Miskelly
> > > Illawarra/Southern Tablelands, NSW
> > > amiskelly at ozemail.com.au
> > >
> > > -----Original Message-----
> > > From: Michael Thompson
> > > To: aussie-weather at world.std.com
> > > Date: Monday, 9 August 1999 21:46
> > > Subject: aus-wx: Anyone think Sydney / Illawarra weather odd today ?
> > >
> > > >Mildest morning in a few weeks, or so it felt on the pushbike this morning.
> > > >However there was snow clouds to the west, albeit at moderate altitude, so
> > > >real snow line was perhaps well over 1200m.
> > > >
> > > >This afternoon some Cb to the east and a nice wintery looking cell to the
> > > >south.
> > > >
> > > >
> > > >Michael Thompson
> > > >http://thunder.simplenet.com
> > > >
>
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> -----------------------jacob at iinet.net.au------------------------------
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014
To: aussie-weather at world.std.com
From: "Nandina Morris" [nandina at alphalink.com.au]
Subject: Re: aus-wx: Melbourne conditions
Date: Thu, 12 Aug 99 22:36:55 PDT
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And Hey - we had hail here, very briefly, and would you you belive a clap of thunder! I kid you not!
(Here is Mulgravish - around AFL park. Time of which I speak = about 8 pm.
Cheers,
Nandina
nandina at alphalink.com.au
----------
> The Melbourne area is at present experiencing showers moving NW - SE. There
> has been a report of a 20-40mm/hr move across the Bay to
> Mornington which has recorded sporadic electrical activity There
> are some nice cold Cbs to the south.............................I think it
> may be time to come back to life fellow Melbournians - the chase season may
> be about to begin ..........
>
> Jane ONeill
> Bayswater, Melbourne
>
>
>
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> -----------------------jacob at iinet.net.au------------------------------
>
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015
X-Originating-Ip: [210.84.141.116]
From: "Chris Gribben" [chrisgribben at hotmail.com]
To: aussie-weather at world.std.com
Subject: aus-wx: Melbourne Storm
Date: Thu, 12 Aug 1999 06:33:00 PDT
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Hi all,
Good to see my fellow Vics out and about this afternoon/evening. I think
Clyve should drive trains 24/7 so we get non-stop storms .
That mobile phone idea of Anthony's also sounds good although a little
expensive
After leaving work, looking west and letting loose various exclamations
after I saw cells galore I went up to the roof of the local shopping centre
and although I could hear considerable static I only saw 2 flashes of
lightning
No sooner had I got home than the rain started and a strike hit 600m max
from my house and Igot deafened by the crack of thunder.I too had almost
forgotten what this sort of wx was like - hopefully it is a good omen for my
trip to Darwin and the Nov chase
Cya later
______________________________________________________
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016
X-Originating-Ip: [203.108.0.59]
From: "Daniel Weatherhead" [dpw14 at hotmail.com]
To: aussie-weather at world.std.com
Subject: aus-wx: Tommorrow night & VPD
Date: Thu, 12 Aug 1999 23:35:05 EST
Sender: aussie-weather-approval at world.std.com
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Hey everyone,
Good to see some long awaited action happening for the Vics. As for what we
will get, i'm not quite sure. Anyway, just a final reminder about the Sydney
video night tommorrow night. For all those attending, (all 4 of us hehe) my
address is:
12 Taringha St
Blaxland 2774
If anyone wants to come and hasn't told me just turn up:)
Also. I will be editing the ASWA Vantage point database in the next few
weeks. Anyone who has any to give me, this is your last chance until next
year. I will do one again next winter, when people come across them chasing
this season. It will be a black and white publication A5 in size. Hopefully
it will be released the first weekend in September.
===========================
Daniel Weatherhead
weatherhead at ozemail.com.au
Blaxland, NSW
===========================
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| Document: 990812.htm
Updated: 18 August 1999 |
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