Mega Thread The Autumn Alpine Ground Cooling Thread

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POW Hungry

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5-8th GFS (06z run)
gfs_z500a_aus_44.png
EC Ensembles picking up on the frontal feature in the Bight, on the 6th (~10am):
Screen Shot 2021-05-27 at 8.37.17 am.png

Screen Shot 2021-05-27 at 8.37.04 am.png
 

POW Hungry

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Forgive the ignorance but what is pinching?
Non-technical term.
It's a region of tight upper level forcing (pressure/wind/temps), which can lead to a trickle-down effect in the atmosphere. These are often driven by planetary waves.
In some instances it can lead to a warming event in the upper trop/stratosphere.
 
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SMSkier

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Moonbah @ 1100 ASL. Light snow flakes falling this past 30 mins.... cold and windy... sticking at a friends place 10 mins away @ 1200 ASL. Cloud band (now receding) in the distance so it’s mostly wind blown... did I say it’s cold - wind chill.

image.jpg
 

dawooduck

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The BOM app gives hourly granularity with lovely info graphics that tell a pretty good picture about what to expect.

The Snowy Mountsins forecast summary is much more broadly based.

The dogs just wandered in and are coiled up in the carpet, the little one isn't too keen on the wind and the big one likes the carpet

it's a cold day it is.
 

Nidecker

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The BOM app gives hourly granularity with lovely info graphics that tell a pretty good picture about what to expect.

The Snowy Mountsins forecast summary is much more broadly based.

The dogs just wandered in and are coiled up in the carpet, the little one isn't too keen on the wind and the big one likes the carpet

it's a cold day it is.

I think it may be a difference between whatever Modelling METEYE uses and the other model interpretations
 

Nidecker

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rocketboy

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Sharp 4C difference between Top Station and PV BOM temps at present. Usually on miserable cold days like this it's a bit closer. But PV could drop quickly again after noon and maybe tthose machines will roar back to life while camski at work.
 

POW Hungry

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POW Hungry

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Sharp 4C difference between Top Station and PV BOM temps at present. Usually on miserable cold days like this it's a bit closer. But PV could drop quickly again after noon and maybe tthose machines will roar back to life while camski at work.
Winds out of the South suggest a bit of fohen effect, perhaps. Thredbo upstream of Peri.
Drier (68% RH), warmer, lower. Showers still present on the Vic side of Ranges (South).
 

SMSkier

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Went up to PV (posted in that thread) where it was damn cold. The snow is quite icy but predominantly machine snow - that would produced wet while base building.

Whilst up there in bright clear skies, it was sleeting and snowing at home (reported earlier in this thread). Looking to the South from home right now you can see low cloud and it’s sleet and snow on and off, occasionally closing in here. It’s skirted the resorts this time.

All up, PV is going ok and predicted snowmaking nights should have it in good shape soon. (FV at least).

Machine snow near mid station.

AA611BAC-7EA5-41DB-89E6-965E6BD16E9A.jpeg


Looking towards Mt P. You can almost pick the recent snowline.

DE067089-B65E-4AE4-9B73-FE4266DB7619.jpeg
 
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