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Jan 2-3 Big Snow Threat , Part 3


weathafella

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Gfs qpf:

0.75 all of ma and ri, eastern half of ct, southern 1/4 of nh and vt.

1.0 canal east

0.5 rest of ct, another half of vt/nh. Downeast me.

 

One could argue the GFS was a good step in the right direction and that it's placing far too much emphasis on a 2"+ QPF blob off the coast.

 

Hi Res NAM dumps on eastern areas very heavily which is a theme carried through all models so far this morning.

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I just sent my friend this text when he asked how much:

"A lot right here near the coast. I think by Friday noon we have a foot. 3-4 tomorrow and the rest tomorrow night early Friday morning. If this break just right someone could get 15-16 inches or if they break wrong maybe 8-9."

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How does SNE south of the border do with WWA snows do folks think? Are those areas totally missed?

 

It starts out there and then lifts north. So there might be a lull later in the aftn. However, as the storm consolidates it should redevelop again from the south and west.  It's a tough call. 

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How does SNE south of the border do with WWA snows do folks think? Are those areas totally missed?

 

If you believe the model evolution, it starts over SNE but moves north after midnight. Holds near the VT/NH/MA border through Thursday afternoon before collapsing towards the developing low.

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So there's been a good amount of talk on the upper level temps, but have we ruled out ratios above 10:1?

 

 

* TEMPS...NO ISSUES WITH P-TYPE AS THERMAL PROFILES WILL ALL BE

BELOW 0C. SURFACE TEMPERATURES WILL BE WELL BELOW AVERAGE AS

1000MB TEMPS ARE BETWEEN 3 TO 4 STANDARD DEVIATIONS AWAY. ONCE

WHEN THE WINDS SHIFT TO THE NORTH ON THURSDAY EXPECT A QUICK DROP

IN TEMPERATURES RESULTING IN SURFACE TEMPS 15-20F BELOW AVERAGE.

WIND CHILL ADV MAY BE NEEDED FOR CENTRAL AND WESTERN MA ON

THURSDAY NIGHT AS WIND CHILLS WILL DROP BELOW -15F. FRIDAY DAY

TEMPS WILL STRUGGLE TO REACH 20F. LOOKING AT THE SNOW GROWTH

REGION...SOUNDINGS CONTINUE TO SHOW DEEP MOISTURE THROUGH THE

PROFILE AND TEMPERATURES WILL RANGE BETWEEN -10C TO -15C. THIS

WILL RESULT IN VERY FINE SNOW AND INCREASE THE SNOW RATIO TO 15:1

TO PERHAPS 20:1 IN SOME LOCATIONS.

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