Tranquil Monday, Significant Snowstorm Tuesday/Tuesday Night

Good afternoon, everyone! Tonight expect partly to mostly clear conditions, with cold low temperatures. Lows will range from -5 to +8 degrees.

Monday expect mostly sunny skies, though high clouds will begin to filter into southwestern areas in advance of our next storm system. Expect winds to be calmer, with high temperatures a bit warmer, ranging from 17 to 33 degrees.

Monday night clouds will increase and most of the area will be cloudy by Tuesday morning, though some sun may remain for eastern sections. Lows will range from -4 to 17 degrees.

Tuesday low pressure will strengthen south of New England and then track near or right over Cape Cod into the Gulf of Maine by early Wednesday. Significant snowfall is expected for the area. High temperatures Tuesday will range from 19 to 32 degrees.

Snow will begin Tuesday morning southwest, spreading to the rest of the area Tuesday afternoon. By Tuesday afternoon, snow will be extremely heavy across southern areas, with rates up to 3 inches per hour possible in heavy banding. Travel will become nearly impossible by mid to late afternoon. Many southwestern areas appear to have above 6 inches of snow on the ground by sunset on Tuesday.

The heavy snow will combine with high winds Tuesday afternoon/evening to create blizzard or near blizzard conditions along the coastline, which may continue through early Wednesday morning before the heavy snow moves out.

Heavy snow moves north Tuesday evening, while it continues thumping southwest as well. This heavy snow appears to continue through early morning Wednesday for most, before moving off to the northeast.

Light snow will continue through mid day Wednesday before remaining bands taper off as low pressure skirts northeast.

Overall, this appears to be one of the biggest snowstorms we’ve seen all season, and heavy snow will be widespread. I expect a general 14 to 17 inches across the area, and those numbers may even need to be raised some Monday as the final details of this thing get ironed out.

Updated 3 PM Sun 3/12

This isn’t a final forecast, and some details do still need to be ironed out. Please, stay tuned to Western Maine Weather tomorrow for update forecasts in the morning and afternoon.

Have a great evening!