Forecast discussion: The low pressure system that brought Atlanta, GA to a standstill on Tuesday brought some light snow amounts to Boston and the rest of eastern Massachusetts. One to two inches fell in the Boston area, while anywhere between three and seven inches fell on Cape Cod and the Islands.
With that system well into the Atlantic, a strong high pressure system over West Virginia will bring us dry weather for the next 36 hours. We will still see bitterly cold temperatures tonight, with some warmer air arriving on Thursday. High temperatures will actually be near freezing. By tomorrow night, cloud cover will actually keep the sun’s energy from escaping back into space. Low temperatures Thursday night will be about 10 degrees warmer than the previous night.
As we begin the weekend, a weak warm front will pass through New England. It may help create some isolated showers Friday afternoon, during the evening commute. A possible snow shower could come early Saturday morning. However, as the weak cold front passes, it may help create some showers Saturday afternoon. We will see a greater chance at precipitation during Sunday afternoon, as a low pressure system from the Southeast U.S. passes through New England.
Our temperatures will return back to seasonable conditions on Monday, as high pressure brings mostly sunny skies. As I watch the long range models, the American model continues to form a strong low pressure system along the eastern coastline Monday evening. The low will remain to our north and west, which means we will be in the warm sector. So, we would see a mix of rain and snow showers early Wednesday morning, before changing to rain. Heavy rain would fall Wednesday afternoon, but a strong cold front passing through may change the precipitation back to snow showers. It would remain snow showers for the last few hours, before the precipitation moves offshore. At this time, none of the other models are showing a strong low, so my confidence in the forecast after Tuesday afternoon remains quite low.
72 hour forecast:
Tonight: Clear skies and cold with a low of 12.
Thursday: Mostly sunny and warmer with a high of 30. Winds will come from the south-southwest at 5-8 mph.
Thursday night: Increasing clouds and warmer with a low of 23. Winds will come from the south-southwest at 5-8 mph.
Friday: Overcast with isolated showers by the late afternoon and a high of 38.
Friday night: Overcast skies with an isolated snow shower by 3 a.m. and a low of 27.
Saturday: Mostly cloudy skies with a possible shower by midnight. We will see a high of 40.
Saturday night: Isolated rain showers and a low of 35.
Sunday: Isolated showers in the morning, with scattered showers in the afternoon. Showers end by the evening. Highs 41-44, lows 24-27.
Monday: Mostly sunny. Highs 33-36, lows 20-23.
Tuesday: Partly sunny in the day, overcast skies with possible rain/snow showers before midnight. Highs 34-37, lows 25-28.
Wednesday: Light to moderate snow changing to rain by late morning. Rain may be heavy at times. Precipitation could end as snow showers. Highs 37-40, lows 22-25.