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Winter Begins Jan 20th AWT


40/70 Benchmark

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27 minutes ago, USCAPEWEATHERAF said:

Ok if it was all snow Ray, 18-24"

Actually if you look closely where you are specifically, you would get 10-12" in the purple region of the outer Cape, the south shore would get 18"-24" based of the light blue color.

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The bulk of the 12z sensitivity (73%) is in the north/south (some timing) position of the low pressure. The southern (read: cold) scenario which we want is tied to uncertainty that grows out of both the Arctic and central Pacific (which is a change from 00z last night which grew mainly out of the Arctic). If we get a deeper southern stream, and shallow out the northern stream we end up seeing the surface low stay south.

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Actually quite steady... 0z Euro may be a tick warmer vs. 12z, noise at this range

The only major model that came west at 0z was the NAM in its clown range... Euro, UK, GFS all ticked east / steady and bring SNE into the bigger snows, along with CNE/NNE.

Nice to see these runs hone in now that our southern stream system is entering the West coast.

Decent consensus to open with 6-12" in much of SNE pike north, 10-16" CNE, and can adjust up (more likely) or down as we get closer 

(returning from a conference in CA, haven't been able to post... hope to bring some good juju to the disco... and will be in Stowe this weekend!)

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10 minutes ago, 40/70 Benchmark said:

I can't stand the Kuchera charts....its like an algorithm that James formulated in the index of  'The Dawn Awakening'..

I can't stand snow maps period. This event is going to have so much sleet and freezing rain dragged into those maps. 

I mean say you sit at +2C at 850 mb for the event, or at least a good chunk of it. That spits out a Kuchera ratio of 4:1. At 1-1.5" QPF you're talking 4-6" snow, despite not really have any realistic shot at it. 

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