Upper low cross-section

[Ken Kato]

For anyone interested, attached are a couple of plots re the mid/upper low due to spin up over the next couple of days. One is a cross-sectional vertical slice of temperatures for 10am Wed morning through the middle of the low from WA to QLD (I used a latitude of 27S to generate this plot). The other is a top-down view of the 500hpa heights (white contours), relative vorticity (shaded) and wind vectors at the 500hpa height (black arrows). Data is from the NCEP ensemble (mean values).
 
Some pretty decent lowering of temps and heights through most of the atmosphere there. It's probably one of the best inland cutoff lows I've seen this year.
 
Ken.

[Lindsay Smail]

Thanks for those Ken.  You can't push it a little to the south over 38S can you?  Regards, Lindsay

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[Bussy]

Is that a good sign for some more wet stuff Ken?

----- Original Message -----

From: Ken Kato

To: Austpacwx

Sent: Monday, November 23, 2009 1:34 PM

Subject: [austpacwx] Upper low cross-section

For anyone interested, attached are a couple of plots re the mid/upper low due to spin up over the next couple of days. One is a cross-sectional vertical slice of temperatures for 10am Wed morning through the middle of the low from WA to QLD (I used a latitude of 27S to generate this plot). The other is a top-down view of the 500hpa heights (white contours), relative vorticity (shaded) and wind vectors at the 500hpa height (black arrows). Data is from the NCEP ensemble (mean values).
 
Some pretty decent lowering of temps and heights through most of the atmosphere there. It's probably one of the best inland cutoff lows I've seen this year.
 
Ken.

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[Ken Kato]

If I could do things like that, I'd be pretty rich by now! There's some hope however - from what I saw yesterday, the indications were for the upper low to drift slowly W after it cuts off, then S and eventually start accelerating SE'wards across Vic later this week as it gets caught up in the main westerly flow with another frontal system behind it. I haven't had a look today so not sure if much has changed but consensus forecasts still look optimistic for reasonable falls for southern SA, VIC and TAS later this week: http://www.bom.gov.au/fwo/IDYPME04/20091127_20091130/pme5to8.png
 
Ken.
 

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[Lindsay Smail]

Good man!

[Ken Kato]

At this stage, it's still looking alright Bussy... albeit a bit better for southern Vic. Would depend a lot on whether the currently developing low and the next frontal system tracks as advertised though.
 
Ken.

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[Blair Trewin]

We did at least get confirmation that the Moomba rain gauge still works (something I was beginning to have doubts about) - they managed a massive 1mm, taking their annual total to 12.

 

So far most of the action has been in the Urandangi-Boulia-Windorah corridor (about 40 at all three), a bit further north than the models were expecting.

 

Blair

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From: Ken Kato [mailto:kka...@hotmail.com]
Sent: Tuesday, 24 November 2009 10:18 AM
To: Austpacwx

Subject: RE: [austpacwx] Upper low cross-section

[Bussy]

Thanks Ken. Looking forward to a bit more un-settled stuff :-)

 

Bussy

[Ken Kato]

The unusually low max temps under the cloud and rainband around those general inland regions yesterday looked impressive too. The 18C below average max of 18C at Bedourie in far W Qld would've dragged out the jumpers for sure.
 
Ken.

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[Tim Eckert]

Moomba has basically doubled their annual rainfall in the last couple of hours.

Now 10.8mm this evening.

 

 

----- Original Message -----

From: Blair Trewin

To: 'aust...@googlegroups.com'

[Tim Eckert]

Moomba 35.2mm in last 24 hours.

 

Friend of mine who works up there for SANTOS, reports mud everywhere lol....

 

 

 

----- Original Message -----

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[Tim Eckert]

What is annoying is that the BOM rainfall for Moomba has now gone on the blink.

Friend reports roads have been closed for 3 days at this stage now & local creek flooding in Wilson, Jackson & Cooper Creek catchment areas.

 

 

Cooper Basin rainfall figures:

Acrasia Office 25mm overnight

Ballera 51mm (9mm overnight)

Dullingari 39mm (34mm overnight)

Durham Downs 44mm (13mm Overnight)

Flax Oilfield 41mm (15mm Overnight)

Growler 3.5mm

Jackson 47.5mm - 48hrs

Innamincka 34mm (30mm Overnight)

Keleary 15.2 mm

Lyndon Station 8mm Overnight

Merty Merty 18mm Overnight

Moomba 36mm (35mm Overnight)

Nappa Merrie Station 40mm Overnight

Naryilco Station 7mm Overnight

Tanbar Station 70mm (40mm Overnight)

Tarbat 40mm – 48hrs

Tirrawarra 30mm (25mm Overnight)

Worrior Production Office 23mm Overnight