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Valentine's Day weekend storm discussion part 2


Sickman

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Stop with TWC FTW crap.  The 1" for NYC call was likely a mistake, since Carl Parker in the afternoon had NYC in their 1-3" swath and then upped them to 3-5" and said he thought NYC might get 5".  They also had Central Jersey in 1-3" and Philly/South Jersey in <1" swaths, most of which failed badly, as I'm almost at 4" now in the Edison area and same is true for most of Middlesex/Monmouth/Mercer and Philly/South Jersey is mostly in the 2-4" range.  

 

Also, snow has buiilt back NW-ward so that we're now in light to moderate snow again and it looks like this NW to SE oriented band is moving NE towards SI/NYC - hope it makes it there....  

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Upton's explanation of what went wrong:

 

"A MESO HIGH PRES SYSTEM RIDGED SW BETWEEN 2 WAVES OF LOW PRES PRODUCING

LOW LVL SUBSIDENCE EARLIER THIS EVENING...WHICH COVERED MOST OF THE

LOCAL AREA. THIS COUNTERACTED THE FAVORABLE UPPER LVL PATTERN THAT

SYNOPTICALLY SHOWED MID AND UPPER LVL LIFT AS EVIDENCE OF THE IR

SAT IMAGERY. "

That's a new one

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More evidence the NAM has been VERY poor this season, even inside 24 hrs, and it's probably better to ignore it altogether. The NAM consistently showed a "snow-hole" over SNE where they are currently receiving heavy snow and 12"+ amounts. It also missed the location of the IVT up to the start of the actual event...

Model performance in general was poor with this, but the NAM once again takes the cake. It was AWFUL.

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