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potential for a few (million) mangled flakes part 2


Alpha5

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went with a 30% chance of 4" at nyc.

highest was 60% at sussex, nj and 40% at mmu.

I think Riverdale is at least 2 times as likely as NYC to reach 4". And certainly MMU and Sussex should have significantly better chances than that. Personally I wouldn't go above 50% anywhere, and I would have NYC below 10%. In my mind, 1" at NYC is 50/50. That could come up significantly if the current consensus track holds and thermal profiles continue to be cold down to 950mb.

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Only about 2 inch per hour rates here in NW Bronx... Just your everyday stuff for October...

I'm much happier that the MM5 agrees with the NAM moreso than the GFS...given that the RGEM is somewhat similar (warmer, I know, but when is it not?), it seems its the meso models vs.the spectrals (save for the UKIE)...the one thing that bothers me is GFS's handling of the kicker s/w...GFS tends to do better with northern stream s/w's than the NAM. Just some food for thought.

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I said before that the NW trend could continue and the storm could be right on the coast. In this case, even if it's offshore, it wou so ld still draw in too much warm air for any snow until it starts to pull away. That's why expecting more than a few flakes towards the end of the storm is probably best rather than hoping for any accumulation.

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I just realized that the mesoscale models aren't being run because of the hurricane models still being run. I also looked for the SREF's at 8:30 P.M. forgetting we are still in October. That would be as weird as say, a team coming from behind in a World Series game twice in an elimination game down to their last strike.

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here's the 12z run if you want to compare. i lined them up perfectly so you can flip back and forth between the two images in your browser.

it's maybe 15-20 miles west and subsequently 15 miles farther west with 540 dm1000-500mb thicknesses/etc. But the boundary layer temperatures are exactly the same.

it might actually be a bit slower and farther southwest than it is west.

http://i.imgur.com/EMxJD.png

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