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Tracking Jan 7 coastal storm. Lingering compression/flow velocity has not lent to consensus, but it seems at 30 hours out.. finally?


Typhoon Tip
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7 minutes ago, ORH_wxman said:

Yeah when you look at soundings, there’s a fairly deep area of lift and it goes into the SGZ…even the ugly solutions have that weenie band early in the storm…I think worst case scenario is prob 2-3” of blower fluff there. But there’s def some upside for higher amounts. 

It's pretty cool that you can see a weenie band in the 18z EURO QPF progs.  Looks like a finger of mid level fronto that develops on the front side and as the low passes that longitude.

H7 wind flow goes pretty much calm over the zone, which seems weird and maybe I'm not visualizing it correctly.  I'd think there'd be more convergence vs divergence in the wind barbs.

ecmwf-deterministic-massachusetts-z700_speed-1556800.thumb.png.77dbd40f89b8cdbcad8de31ff868d5a6.png

ecmwf-deterministic-massachusetts-t850_mslp_prcp6hr-1567600.thumb.png.59fc56f5f1da005ba511bc8f33d5ec95.png 

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1 minute ago, powderfreak said:

It's pretty cool that you can see a weenie band in the 18z EURO QPF progs.  Looks like a finger of mid level fronto that develops on the front side and as the low passes that longitude.

H7 wind flow goes pretty much calm over the zone.

ecmwf-deterministic-massachusetts-z700_speed-1556800.thumb.png.77dbd40f89b8cdbcad8de31ff868d5a6.png

ecmwf-deterministic-massachusetts-t850_mslp_prcp6hr-1567600.thumb.png.59fc56f5f1da005ba511bc8f33d5ec95.png 

Do you have the total precip maps for the entire event?

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11 minutes ago, powderfreak said:

I was thinking 2-5" for Woodstock area, so that fits.  I think there's a low prob of 2" unless snow growth somehow is putrid and would lean more towards 12:1 and 4-5".  Mid-level banding is always the wild card west of the best QPF.

Yeah that’s why 4-8” covers the whole state. Most towns get 4-6” but if you’re under that band you end up with 8” or so 

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4 minutes ago, powderfreak said:

Good lick for SE MA.. and up the coastline.  That's a good run of 0.50-0.75" frozen water on the coastal plain up into ME... with locally 0.75-1.00" in SE Mass.

total.png

Does that exclude anything that just fell over the last 6hr here?  Just had 0.66" fall in the last few hours.

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9 minutes ago, Baroclinic Zone said:

Does that exclude anything that just fell over the last 6hr here?  Just had 0.66" fall in the last few hours.

Ah shit you’re right.  Didn’t realize it was raining down there.  My bad for sure.  I’ll delete other post.  Here’s the snow storm.

A74820C2-8742-4714-B832-49BFAEAC0772.thumb.png.5aa0df3729b91f2672656a8bb44bb022.png

 

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  • Typhoon Tip changed the title to Tracking Jan 7 coastal storm. Lingering compression/flow velocity has not lent to consensus, but it seems at 30 hours out.. finally?
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