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Boston weather: Winter returns once again

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Forecast discussion: Unfortunately, we have come to an end with our above average temperatures that stayed around Boston for the last several days. We have returned to winter, and it will keep its hold on us for at least the rest of this week.

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However, high pressure will continue to bring us sunny skies, at least for the first part of Tuesday. However, we will still keep breezy conditions. This is due to a low pressure system over Nova Scotia and a high pressure ridge building in from the west. The low will slowly move further to the northeast, but the ridge will move closer eastward. This will make for another day of breezy conditions. Also, the high is helping to bring some colder air from Canada back into New England.

By Wednesday, a weak area of low pressure over New York will help create some snow showers by the early afternoon. A much stronger low appears to be staying well offshore. This will keep the precipitation amounts minimal, with the snow showers ending by the middle of the evening commute. We will only see a coating to an inch by Wednesday night.

On Thursday, we will see mostly sunny skies for most of the day. However, a weak disturbance may help trigger a few snow showers for a very brief period of time, during the late afternoon and early evening. We will return to dry weather for the next few days. However, the overnight will be quite cold. The polar vortex will begin to move southward again. It will bring well below normal temperatures as far south as the Gulf Coast States.

The next chance for any precipitation will be Saturday. A weak low pressure system will move south of Southern New England. However, there will be more than enough cold air to make the precipitation remain as snow. However, the low will be quick moving, so we will only see snow showers for about 12 hours. We will return to colder and drier weather for Sunday.

As we look at the long range computer models, there is the slight chance of seeing some significant snowfall starting next Monday. A low pressure system will develop over central Texas, but will become blocked by a strong high pressure ridge. The low will move towards the northeast Sunday night into Monday. We will see the precipitation shield bring our first snowflakes late Monday morning. There is a slight chance it could turn to rain by Tuesday, if we stay on the warmer side of the system. But, if the system continues to slide east, then we would see more snowfall. Again, this is seven days out, and the computer models could change this forecast drastically before that time.

72 hour forecast:

Tonight: Any cloudy skies will give way to partly cloudy skies after midnight. We will see a low of 18.
Tuesday: Mostly sunny to start the morning, with partly sunny skies by the afternoon. It will be breezy with a high of 28. Winds will come from the west-northwest at 14-17 mph.
Tuesday night: Mostly cloudy with a low of 17. Winds will come from the west-northwest at 4-7 mph.
Wednesday: Cloudy with light to moderate snow showers by the early afternoon. We will see a high of 29. Any snow showers will end by the early evening. We will see a coating to an inch.
Wednesday night: Partly cloudy and cold with a low of 13.
Thursday: Mostly sunny skies with the risk of a passing snow shower during the early part of the evening commute. We will see a high of 29.
Thursday night: Partly cloudy with a low of 11.

Extended Forecast:
Friday: Mostly sunny. Highs 23-26, lows 14-17.
Saturday: Cloudy with snow showers by the early afternoon. Highs 27-30, lows 12-15.
Sunday: Snow ends around midnight. Mostly sunny skies for the daytime expected. Highs 24-27, lows 10-13.
Monday: Cloudy with light snow possible by the late morning. Highs 27-30, lows 22-25.