Sunday 1/31/21 – AM Update

Good morning! Here’s a full update on the upcoming snowstorm.

Expect a widespread 8-14″ in much of interior southern New England, including the Merrimack Valley. 4-8″ totals are likely a bit closer to the coast (especially inside of I-95 near Boston), as well as in parts of western New England further from the key moisture of this storm. Mixing will be an issue near the coast; 2-4″ can be expected at Cape Ann, as well as in much of southeastern Massachusetts (with 0-2″ for Cape Cod and the Islands). There is some uncertainty on snow totals near the coast.


The system has sped up a bit since the last update. Snow begins midday Monday, and may impact the evening commute. However, the bulk of the accumulating snow will be Monday evening into Tuesday morning. The heavy snow ends by mid-morning Tuesday, but flurries and light snow may continue into Tuesday afternoon.

The snow will be roughly average weight. It won’t be fluffy, but I also don’t expect anything unusually heavy and wet. There is a threat of downed trees and power outages, though, due to strong northeast winds of 10-20 mph, with peak gusts up to 40 mph. Blizzard conditions are possible at times with poor visibility. Driving will be extremely hazardous Monday evening into Tuesday morning, so stay off the roads if possible.

This is a high-confidence forecast inland; the only major concern locally would be if the dry slot aloft moves in earlier than expected, which would undercut snow totals a little bit. Most of the uncertainty involves amounts closer to the coast, as it’s not impossible that coastal locations (even south of Boston) could see up to a foot of snow with the initial band Monday evening and night before changing to rain.

I’ll have more info tonight if necessary. Have a great day!

Published by Nathan Coram

Hello! I'm Nathan Coram, a 20 year old meteorology student and weather geek, and am in my junior year at UMass Lowell as a meteorology major. I am the current Vice President of the UML American Meteorological Society Local Student Chapter. Prior to at UML, I attended the Dracut school system for my K-12 years, having graduated from Dracut High in 2018. I first got into weather with the December 2008 ice storm, which knocked out my electricity for 4 days. I had no idea how it could be raining and becoming ice immediately, and how rain can knock out power. (Now I do - warm layer aloft, cold air at surface). But I didn't really get into it until the heat of July 2010 and specifically a few severe weather events during that month, followed by the year 2011, which featured several high profile weather events. Since then I have had a growing interest, and am hoping to make it into the meteorology field, preferably with NOAA/NWS. But for now, I'm blogging here on Dracut Weather (also on Twitter and Facebook), helping with the UML Weather Center social media, and tweeting about the weather on my own account as well. Thanks for visiting!

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