Winter Storm Warnings in effect for NH, VT and Central MA.
Today: Mostly cloudy, highs in the mid to upper 40s south, near 40 north.
Tonight: Cloudy, rain and snow develops south, all snow north and west of a Nashua to Worcester line. Amounts will be pretty widespread overnight, 2-4 south, 3-6 inches north. Lows in the low to mid 30s south, mid 20s north.
Tomorrow: Rain far south, rain/snow mix in Central New England, all snow north, changing to all snow for everyone in the afternoon. Total accumulations of 6-12 inches for much of Central and Northern New England, 2-5 in a thin band in Southern New England, see map. Highs in the mid 30s to low 40s(coast) south, mid 30s north.
Tomorrow night: Snow tapers off, little to no additional accumulation, lows 30-35 south, mid 20s north.
Saturday: Partly sunny, a much better day, highs in the 40s south, near 40 north.
Discussion:
Tough forecast, but I'm feeling pretty confident. Conditions will remain quiet but generally overcast during the day today. The low pressure system that is going to affect the region really hasn't developed yet across the Southeastern United States. It is starting to however and it will race northward through the day today. I expect to see the precipitation start late this evening, shortly after the sun sets across Southern New England. Rain for the south coast, then transitioning to snow as you get into Central MA and Southern NH. Accumulations will be on the lighter side overnight as the best energy with this storm won't arrive until tomorrow morning. Regardless, its going to be a sloppy commute outside of I-495 tomorrow morning.
As the center of the low pressure system gets closer tomorrow morning the precipitation will pick up in intensity. This is going to hold the rain snow line steady across Northeastern MA back to Central MA. Points to the north and west of here will stay all snow. Temperatures are going to be near or above freezing for the duration of this storm so the snow is going to be wet and heavy. This will keep amounts down, but make it nearly impossible to move by shovel or snowblower. Tomorrow afternoon the precipitation will start to wind down, but as this happens cold air will start to move in aloft and this should change any rain over to snow by the late afternoon, this includes the Boston area. However, no accumulation is expected. Here is the map I promised.
Now, my skills in Paint aren't that great, so I was liberal with the 6-12 inches. Higher elevations are going to have the best chance to see 12 inches. Locations like Nashua and Manchester would probably be better represented with a 6-9 inch total, but it would have taken me all day to try to depict that! Either way, this is a plow-able event that is going to be a pain in the neck and back.
Power outages are expected tomorrow when you combine the heavy snow and the wind we will see. Some trees may come down as the top layer of the soil has thawed, so shallow rooted trees are going to be susceptible to be blown over.
The good news is that this weekend temperatures are going to be at normal levels, so the majority of snow we see in the next 36 hours will mostly be gone by Sunday afternoon. Further out into next week, it looks like the warm up will progress further to go along with a rain event toward the middle of next week.
Post any questions below if you are looking amounts in specific locations and I'll answer as quickly as I can.
Thanks for reading!
-Jon K.
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