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February 20-22 Winter Weather Threat


snowstormcanuck

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0.15" as SN, 0.15" as PL (although the elevated warm layer is marginal. It could easily be snow), and 0.20" as ZR.

 

Thanks! Well thats interesting. We'll need to watch for potential dynamic cooling like the NAM is depicting. The High across Quebec isnt very strong, but perhaps the extensive ice cover and deep snow pack could help out. 

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RGEM also showing something similar, although amounts are lighter.

 

Yeah its more warmer than the NAM but we'll have to see what transpires as we move closer. The GFS looks like all rain. Maybe some light ZR to start off. 

 

A few key things can make a huge difference in what kind of precip we end up seeing. 

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Yeah its more warmer than the NAM but we'll have to see what transpires as we move closer. The GFS looks like all rain. Maybe some light ZR to start off. 

 

A few key things can make a huge difference in what kind of precip we end up seeing. 

If the temperature can hold in the 30s, we might be able to preserve much of our snowpack.

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At least I can't remember any situation where I got a thump of snow like that. Not saying it hasn't happened in my lifetime or anything.

If it happened, wouldn't even touch a shovel!

Most of the 8-14" of snow that fell from DC to the NYC metro last Weds night through Thursday night was intense WAA driven snows Weds night into Thurs AM. Combo of wet bulbing initially and dynamic cooling kept the column supportive of mostly snow until the warmer air finally overcame. The 00z sounding last Thursday evening at OKX on central LI registered 7c at 850 mb.

It'll be interesting to see if the NAM is legit with this wet bulbing/dynamic cooling set-up. GFS will not do as well picking up on this but its last 2 runs were hinting at it over northern IL and southern WI.

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Congrats, DLL!  Seems like forever since I seen you under a warning with up to a foot of snow.

THURSDAY...SNOW IN THE MORNING  THEN SNOW AND ISOLATED  THUNDERSTORMS IN THE AFTERNOON. SNOW MAY BE HEAVY AT TIMES IN THE  AFTERNOON. SNOW ACCUMULATION OF 6 TO 9 INCHES. HIGHS IN THE MID  30S. EAST WINDS 5 TO 10 MPH...SHIFTING TO THE NORTH IN THE  AFTERNOON. CHANCE OF PRECIPITATION 100 PERCENT.    THURSDAY NIGHT...WINDY...COLDER  SNOW. AREAS OF BLOWING SNOW.  SNOW ACCUMULATION OF 2 TO 3 INCHES. LOWS AROUND 13. WEST WINDS  20 TO 30 MPH WITH GUSTS TO AROUND 45 MPH. CHANCE OF SNOW  100 PERCENT.    
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Most of the 8-14" of snow that fell from DC to the NYC metro last Weds night through Thursday night was intense WAA driven snows Weds night into Thurs AM. Combo of wet bulbing initially and dynamic cooling kept the column supportive of mostly snow until the warmer air finally overcame. The 00z sounding last Thursday evening at OKX on central LI registered 7c at 850 mb.

It'll be interesting to see if the NAM is legit with this wet bulbing/dynamic cooling set-up. GFS will not do as well picking up on this but its last 2 runs were hinting at it over northern IL and southern WI.

 

 

that's nuts

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