While the Boston Metro and most Metropolitan areas of Southern New England see mostly rain from today’s storm, snow has continued to add up in far Northern and Western Massachusetts points north. While a daytime November snow event has decidedly less impact on roads – especially treated ones – than its counterparts in the dead of winter, those roads that aren’t treated as heavily have become slick and snow-covered in the snow zone, and even treated interstates occasionally become overwhelmed in heavier bursts of snow. While Southern New England will ship out the rain as a last-gasp snow shower during the afternoon, Central and Southern New England will see at least lightly accumulating snow lingering into the evening. Clearing tonight leads to some sun Wednesday before building clouds and scattered afternoon and evening snow showers and squalls ahead of an approaching arctic cold front that delivers the much-advertised bitter blast of air for Wednesday night through Thanksgiving night, producing daytime highs only around 20 with wind chill values either side of zero on Thanksgiving Day, leading to a change of plans for many high school football games and likely some Turkey Day foot races. Wind eases Thursday night into Friday but cold air lingers with overnight low temperatures mostly in the single digits. Saturday brings some moderation before the clash of changing air results in developing rain and northern snow Sunday into Monday. Temperatures remain cool through the remainder of the exclusive Early Warning Weather 10-day forecast.
A messy start to the week will lead to record cold on Thanksgiving Day. Some Monday morning slick spots over interior Central New England were the result of a rather weak disturbance crossing our region. As the last of mixed showers exit stage right Monday midday, leaving cloudy skies and drier conditions for the afternoon, another disturbance is already approaching from the Ohio Valley, set to arrive overnight tonight and last through Tuesday early afternoon. Like its predecessor, this new storm system won’t be exceptionally strong and will be moving through air marginal for rain or snow, meaning a rain/snow line is likely to set up across Central and Northern Massachusetts as precipitation begins lightly late Monday evening and intensifies for the Tuesday morning commute to midday. Due to a mix with rain, the immediate Boston Metro is unlikely to pick up more than an inch, but those outside of Route 95 to the north and west may see a couple of inches, and outside of Route 495 the potential rises to a few to several inches of snow, with the greatest snowfall expected in Western MA, Southern VT, Central/Southern NH and Southern ME where the entire event should feature snow rather than rain. Significant wind and waves aren’t expected with this storm, so the biggest impact is on local travel. An arctic cold front approaches Wednesday, triggering afternoon and evening scattered snow squalls from north to south, respectively, ushering in the coldest air of the young season for Thanksgiving Day, when highs are only expected to reach 20-25 degrees and wind chill values will hover either side of zero, putting Thanksgiving Day road races and football games in jeopardy, though moderation is expected especially by Saturday in our exclusive Early Warning Weather 10-day forecast.