Update on Friday-Saturday Storm

The National Weather Service in Taunton has issued a *Winter Storm Watch* for locations north of the Mass Pike.
NWS AM Headlines
The areas in the watch are the ones who are most likely to see 6+" of snow.  Near the coast and south of the Pike, warmer air aloft will change frozen precipitation to rain.  Some of these areas, like Hampden, Southern Worcester, and Norfolk counties will likely have a Winter Weather Advisory posted later today.  Let's time this storm out so you know what to expect and when.

Mostly sunny with temperatures near 50,  Winds will be light and clouds will begin to increase late this afternoon as a warm front associated with our storm system creeps northward.

Increasing clouds with light winds.  Temperatures by daybreak will be near 30 in the Blackstone Valley.  Temperatures are in the mid to upper 20s in Northern MA while it will be a bit warmer south of the Pike in SE MA/RI.
NWS Min Temps Friday AM (image Weatherbell)

Any precipitation that falls before 8 AM tomorrow morning will be light in Central and Eastern Southern New England (CMass, EMass, RI).  Sidewalks and side roads may be a bit slick in Western MA/CT as people head to work/school, but main roads should be okay.  After 8 AM the precipitation will increase in intensity.
06z NAM Hires Sim Radar Friday 9 AM (image Weatherbell)
This is not a well-organized radar image.  The precipitation will be scattered tomorrow morning.  I would not cancel any plans before noon time.  The storm system will not be well organized so the snow will struggle to stick in Southern Worcester County and Eastern Massachusetts through lunchtime.   Between 2-5 PM sleet and freezing rain will be the biggest problem in Worcester County, while a band of snow will set up in NE MA.
06z NAM Hires Sim Radar Friday 2 PM (image Weatherbell)
IF snow is to fall in Southern Worcester County, it will be between 11 AM - 3 PM.  A quick 1-3" could fall.  Given temperatures right around freezing and the strength of the spring sun I would bet low on snow.  By 8 PM sleet/freezing rain will be the dominant precipitation type in Eastern MA as well.

After 10 PM, locations South of the Pike will go over to all rain.  One exception could be Western Worcester County/NE CT where freezing rain is likely.  Heavy rain will fall after midnight as the low passes south of the region through 7-8 AM.  In all, over 2" of precipitation will fall.
NWS Precipitation Outlook Through Saturday 2 PM (image Weatherbell)
Snow out of that
NWS Total Snow through Sat 8 PM (image Weatherbell)
So basically 1-3" north and west of 95 to the Pike, then 3-6" from the Pike to MA-NH/VT border.   Some remnant precipitation will be around Saturday afternoon as the low pulls away.  There are lots of red flags for snow in Southern New England with this storm, which is typical since it is almost April.

The snow will be heavy and wet in Northern MA so some tree limb damage is possible.

I will update later today.

-Zack Green


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