Message from discussion
Winter is here
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Message-ID: <839F111C9B4847238BF516F33F928ADE@weather>
From: "Clyve Herbert" <mes...@iprimus.com.au>
To: <austpacwx@googlegroups.com>
References: <55FF627C882749DA95E4AF87BEF022A4@weather> <BLU140-W18CB77D8DC91C6B40BC382842C0@phx.gbl>
Subject: Re: [austpacwx] Re: Winter is here
Date: Fri, 3 Jul 2009 14:53:11 +1000
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Hi Ken...
On that note of snow there has been a lot of snow in NZ overnight and plent=
y of road ice (both islands) A deep low is located across the island, this =
seems to be a cold pool area however some very cold low level air is spread=
ing across the south island from the southeast and north of an intense high=
near Antarctica.
I have occasionally come across reports from England of snow and blizzards =
with not very low 500hpa thickness values but very cold air from the surfac=
e to around 700hpa (Arctic outbreak)...Clyve H
----- Original Message -----=20
From: Ken Kato=20
To: Austpacwx=20
Sent: Friday, July 03, 2009 2:41 PM
Subject: [austpacwx] Re: Winter is here
Clyve, just thought you might be interested to know of one of those high =
thickness/snow scenarios for NE NSW tonight. I remember you mentioning this=
in a previous post. Models have the 540 line barely reaching the central N=
SW tablelands before completely leaving the area by around midnight. This i=
s despite the categorical precip forecasts suggesting a bit of snow much fu=
rther north on the NE NSW tablelands right up to around 10am next morning (=
not to mention < 0C temps at 850hpa reaching up to near the Qld/NSW border =
also). Forecast soundings for that area appear to suggest the reason for th=
is - a shallow layer of cold moist air in the lowest 1000-2000ft then a rea=
lly massive inversion/warm air above it right up to around 18,000ft. Even t=
hough there's pretty cold air down low, this layer looks extremely shallow =
and not enough to lower thicknesses below 540.
=20
I also heard an unconfirmed report of snow on the central NSW tablelands =
this morning even though the 540 line barely reaches that area according to=
LAPS analysis. The above reason might explain this one as well.
=20
Ken.
=20
---------------------------------------------------------------------------=
---
From: mes...@iprimus.com.au
To: austpacwx@googlegroups.com
Subject: [austpacwx] Winter is here
Date: Fri, 3 Jul 2009 12:24:54 +1000
Hi all.
Real winter has arrived in the central ranges Vic....Bright sunshine 50kp=
h souwester 6c and a wind chill of minus 5c....The mean maximum for Trentha=
m is 7c in Jully and the mean Min is 2c...and now for 5 weeks of proper col=
d....regards Clyve H
=20
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<DIV><FONT face=3D"MS Sans Serif" size=3D3>Hi Ken...</FONT></DIV>
<DIV><FONT face=3D"MS Sans Serif" size=3D3>On that note of snow there has b=
een a lot=20
of snow in NZ overnight and plenty of road ice (both islands) A deep low is=
=20
located across the island, this seems to be a cold pool area however some v=
ery=20
cold low level air is spreading across the south island from the south=
east=20
and north of an intense high near Antarctica.</FONT></DIV>
<DIV><FONT face=3D"MS Sans Serif" size=3D3>I have occasionally come across =
reports=20
from England of snow and blizzards with not very low 500hpa thickness value=
s but=20
very cold air from the surface to around 700hpa (Arctic outbreak)...Clyve=
=20
H</FONT></DIV>
<BLOCKQUOTE=20
style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LE=
FT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>Fro=
m:</B>=20
<A title=3Dkka...@hotmail.com href=3D"mailto:kka...@hotmail.com">Ken Kato=
</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A title=3Daustpacwx@googlegro=
ups.com=20
href=3D"mailto:austpacwx@googlegroups.com">Austpacwx</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Friday, July 03, 2009 2:41 P=
M</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [austpacwx] Re: Winter is=
=20
here</DIV>
<DIV><BR></DIV>Clyve, just thought you might be interested to know of&nbs=
p;one=20
of those high thickness/snow scenarios for NE=20
NSW tonight. I remember you mentioning this in a previous =
post.=20
Models have the 540 line barely reaching the central NSW tablelands=
=20
before completely leaving the area by around midnight. This is=20
despite the categorical precip forecasts suggesting a bit of snow mu=
ch=20
further north on the NE NSW tablelands right up to around 10am =
next=20
morning (not to mention < 0C temps at 850hpa reaching up to near the=
=20
Qld/NSW border also). Forecast soundings for that area appear=
=20
to suggest the reason for this - a shallow layer of cold m=
oist=20
air in the lowest 1000-2000ft then a really massive inversion/warm a=
ir=20
above it right up to around 18,000ft. Even though there's prett=
y=20
cold air down low, this layer looks extremely shallow and not enough to l=
ower=20
thicknesses below 540.<BR> <BR>I also heard an unconfirmed rep=
ort=20
of snow on the central NSW tablelands this morning even though the 540 li=
ne=20
barely reaches that area according to LAPS analysis. The above reason mig=
ht=20
explain this one as well.<BR> <BR>Ken.<BR> <BR>
<HR id=3DstopSpelling>
From: mes...@iprimus.com.au<BR>To: austpacwx@googlegroups.com<BR>Subject:=
=20
[austpacwx] Winter is here<BR>Date: Fri, 3 Jul 2009 12:24:54 +1000<BR><BR=
>
<STYLE>
</STYLE>
<DIV><FONT face=3D"MS Sans Serif">Hi all.</FONT></DIV>
<DIV><FONT face=3D"MS Sans Serif">Real winter has arrived in the cen=
tral=20
ranges Vic....Bright sunshine 50kph souwester 6c and a wind chill of minu=
s=20
5c....The mean maximum for Trentham is 7c in Jully and the mean Min is=20
2c...and now for 5 weeks of proper cold....regards Clyve=20
H</FONT></DIV><BR><BR><BR>
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