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WxUSAF

December 16-17, 2020 Winter Storm Obs/Nowcasting

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31/24...come on snow gods, just give me ten minutes of fatties.  For the love of 2020 just 10 minutes!

Just learned from @H20 I’m in the same vicinity as you all. Praying for a few fatties with you!


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Just checked the 12z RAOB out of IAD. There appears to be a bit of a warm nose somewhere around 800 mb, but there's a bit of dry air above and below it. I wonder if the dry air would allow precip to cool the column more effectively and maybe offset that. It would have big implications for snow totals, especially down towards the cities if we can really thump for a few hours as SN or even +SN.

12zIADRAOB_121620.thumb.PNG.c96b7764a73a20f2d53d8f4c7f44a06e.PNG

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Guys. The radar looks exactly like what was planned if anyone had any doubts. There was supposed to be limited QG Vector convergence until between 12-15z, then things will begin blossoming quickly heading north. By 18z, there should be a formidable slug and by 21z, it’ll be a wall of precip.

Heading to bed. One more mid left. Good luck to all. I hope to wake up to obs of SN+, ripping fatties, and puking snow. Have fun!


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This gradient being shown on maps is insane. 12”+ with less than 3” 20-30 miles away in some cases.... 

either some folks expecting 12” are gonna be super disappointed, or the I-95 corridor is in for a little treat. 

 

so far: HP is a bit stronger / south of progged. Not sure if that means anything but there’s a decent CAD signature down into VA

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