Light to Moderate Snow Event Tomorrow

(I am going to take this one storm at a time.  It appears a major get the bread and milk winter storm is on its way Tuesday-Wednesday next week.  I'll post on that event tomorrow.  At 120 hours out there is still plenty of time to monitor.) - Zack Green

A wave of low pressure riding along a frontal boundary south of New England will develop a snow shield as it passes the region Friday AM.  Snow will begin before dawn and will taper off in the early afternoon.  Generally speaking, a coating to an inch is possible along and north the MA Pike while 1-3" south of the Pike in Hampden, Worcester, and Norfolk counties.  4-8" will fall in RI and SE MA with perhaps locally higher amounts on the Cape.  Potentially historic cold arrives this weekend.

General Overview
The NWS has issued a *Winter Storm Warning* in pink and a *Winter Weather Advisory* in light purple.  
NWS PM Headlines 
A piece of mid-atmospheric energy is tracking through the upper Midwest.  A surface low will form near the Mid-Atlantic coast tonight.  
WPC Surface Fronts/Precipitation Friday 1 AM
As an aside the strength of the high pressure dropping into the States is impressive.  Snow will begin to stick to grassy surfaces around 5-6 AM.  Here is the future radar for 5 AM tomorrow.
20z HRRR Simulated Radar Friday 5 AM (image Weatherbell)
There will be 1" or less at 7 AM.  Snow should pick up after 8 AM.  The snow is gone early Friday PM as the low races out to sea.  Snow will linger in South Coastal MA.
WPC Surface Fronts/Precipitation Friday 1 PM
The snow gradient is tight tomorrow but radar trends in the morning will tell us whether or not the snow shield is further north (south) than anticipated.  
NWS Most Likely Snowfall
Temperatures will rise into the low 30's tomorrow afternoon before crashing into the single digits by Saturday AM.  Talk to you in the AM.

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