Forecast discussion: A strong high pressure system over the Southern U.S. brought plenty of bright sunshine to Boston today, but temperatures remained well below normal. As we head into Friday night, temperatures will actually hold steady in the lower teens, before actually increasing. This is due to a change to southwest winds, and winds will be increasing as we head into sunrise.
A strong pressure gradient between a low over eastern Canada and the high will create the strong winds at the surface. Temperatures will actually rise above freezing for the first time since Monday morning. Also, we will see a few flurries during the morning, before a brief lull of dry weather. Then, some snow showers, mixed with some freezing drizzle, will move in before sunset. The precipitation will end within 12 hours. I am only expecting a coating on the ground, with higher elevations seeing an inch.
A weak area of high pressure will bring us some sunshine for Sunday, but another quick moving low pressure system will push through in the evening. We will see another round of light snow starting early Monday morning before ending during the evening commute. At this time, I am only seeing about one to two inches falling through the state. Once the cold front moves offshore, we will return to the colder temperatures once again.
Last night, I was a little concerned about a possible ocean storm forming Tuesday night into Wednesday morning. As of this afternoon’s model runs, both the American and European models agree the low will form too far in the ocean to have any effect on us. So, I will keep dry weather in the forecast.
By Thursday, a quick moving cold front over Canada will bring the chance for some snow showers during the evening commute. However, the snow showers end quickly, as the moisture moves offshore. We will see limited sunshine next Friday. Once again, our temperatures will moderate upward, as we reach the freezing level for high temperatures.
72 hour forecast:
Tonight: Increasing clouds and with a low of 11, but temperatures rising into dawn. Winds will be increasing as we head towards sunrise.
Saturday: Mostly cloudy and windy with flurries in the morning. Skies will remain cloudy until 4 p.m. then a mix of snow showers with possible freezing drizzle. We will see a high of 34 with south-southwest winds of 19-23 mph.
Saturday night: Light snow showers by 10 p.m. before ending by 3 a.m. We will see a low of 15. I am only expecting a coating, with an inch possible northwest of Boston. Winds will come from the west-northwest at 15-20 mph.
Sunday: Partly to mostly sunny with a high of 21.
Sunday night: Snow showers by 1 a.m. and a low of 18.
Monday: Snow showers end by 6 p.m. A total of one to two inches of snow is possible. We will see a high of 38.
Monday night: Partly cloudy and very cold with a low of 12.
Tuesday: Mostly sunny. Highs 17-20, lows 8-11.
Wednesday: Mostly sunny. Highs 20-23, lows 11-14.
Thursday: Mostly sunny through noon, with increasing clouds and snow showers in the evening. Highs 26-29, lows 17-20.
Friday: Snow showers end by 2 a.m. with partly sunny skies. Highs 31-34, lows 19-22.