HERE WE GO SNOW...
A MESSAGE FROM TSWAILS....
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HERE WE SNOW....
The first big snow of the season is about to get underway and won't stop for much of Wednesday. The long-lasting snow will lead to snow-covered streets through Wednesday. As a result, there are widespread Winter Storm Warnings... and as Terry alluded to the warnings were expanded to the northwest:

Snow could be falling for 12-14 hours through the day. This system will be an efficient snow producer as it will be very cold throughout the atmosphere. I think the 0z HRRR and EURO remain on the right track with the latest snowfall totals:
The EURO

The HRRR

The NBM (National Model Blend)

The GFS (finally figuring out what other models saw several days ago). Better late than never!

There's been a continual trend to the northwest, leading to lesser totals in the southeast. I think the depth of the dendritic growth zone (snow zone) and high snowfall ratios will still lead to 4-7" totals with some amounts possibly exceeding 8 inches in my NW counties.
There will be some high snowfall rates during the late morning through the afternoon, leading to the fluffy snow piling up. Winds won't be terribly strong, but enough to lead to some blowing and drifting in open areas:

The snow end in the late evening and temperatures will be dropping fast. We'll end up near zero Thursday morning:

Attention then turns to another storm on Friday into Saturday that is likely to bring additional snow accumulations.

Mr. snow himself (Terry) will have more on that in future posts. Roll white gold, and if you can spare a donation, he will see to it that it's money well spent....TS
Meteorologist Rebecca Kopelman
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