Forecast discussion: High pressure over the Northeast U.S. gave eastern Massachusetts a sunny day, giving power companies and snow plows great weather to return things to normal. Before starting the discussion for the weather, I thought I might give you some quick facts and figures on the cleanup. Right now, National Grid still has about 49,500 customers without power as of 4:35 p.m. NStar is reporting about 161,400 customers are still without power, or about 14% of their total customers. Despite the good weather, many private and public schools will be closed tomorrow, and many parking bans do remain in effect. For those without power, some schools have been converted to shelters, so they can stay warm during the cold nights.
This high pressure system that gave us nice weather will be moving offshore this evening. We will see increasing clouds during the overnight, as a low pressure system over central Iowa moves to the east. A warm front will slowly pass through New England by late Monday afternoon. But, we will also see more precipitation. The precipitation will actually start as a mix of sleet and freezing rain by late morning, before changing over to all rain. I am forecasting about a half inch of rain. This may help create street flooding, as many storm drains are blocked by snow. It will also compact the snow, making it heavier to move.
The rain showers will end a few hours after midnight, and a new high pressure system will influence our weather by early Tuesday morning. The milder temperatures will continue into Tuesday, before we see cooler high temperatures on Wednesday. But, it will help melt some of the huge snow piles.
As we move into Thursday, I will be watching a developing low pressure system over the Southeast U.S. Right now, many computer models have the low tracking out to sea. At best, we would see a wintry mix in the late morning and early afternoon. For now, I will keep the chance for some precipitation, and see if the models continue to agree on taking the low offshore.
A weak area of low pressure would bring a few showers on Friday afternoon, before a strong high pressure system influences our weather for next weekend. But, an upper level trough will be moving over the eastern U.S. This trough would bring colder air down from the north, and our temperatures will barely make it above freezing on Sunday.
72 hour forecast:
Tonight: Increasing clouds through the overnight with a low of 25.
Monday: Precipitation may start as a mix of sleet and freezing rain by late morning before changing to all rain by the early afternoon with a high of 46. Winds will come from the south-southwest at 10-13 mph.
Monday night: Showers ending around 2 a.m., with partial clearing and a low of 33. Winds will come from the west-southwest at 8-11 mph.
Tuesday: Mostly sunny with a high of 45.
Tuesday night: Partly cloudy with a low of 26.
Wednesday: Partly to mostly sunny with a high of 40.
Wednesday night: Partly cloudy with a low of 26.
Thursday: Partly sunny with possible rain showers by the afternoon, ending by the evening. Highs 40-43, lows 28-31.
Friday: Cloudy with possible rain showers in the afternoon. Highs 42-45, lows 25-28.
Saturday: Partly sunny. Highs 39-42, lows 21-24.
Sunday: Mostly sunny. Highs 33-36, lows 18-21.