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Boston weather: Warmer temperatures with moderate rain for Friday

The weather map for Southern New England at 1 p.m. EST on February 21, 2014.
The weather map for Southern New England at 1 p.m. EST on February 21, 2014.

Forecast discussion: With the help of milder temperatures, Boston saw a lot of snowfall melt away. At Logan Airport, the high temperature for the day was 48 degrees. We will continue to see milder temperatures through the weekend, but winter will be returning by early next week.

High temperature forecast for February 21, 2014

The latest radar imagery shows light to moderate rain moving over the state of Rhode Island at the moment. This is due to a warm front crossing through Ohio and West Virginia. The precipitation will move over Boston by the morning commute. We will see heavier rainfall move over the area by the afternoon. This may create street flooding, due to any remaining snowfall clogging storm drains. Also, there is enough warm air and enough upper level dynamics to create some isolated thunderstorms. So, do not be surprised if you hear a rumble of thunder and get some gusty winds.

As we move into the weekend, a strong high pressure ridge will build over Southern New England from the west. We will have dry weather, but temperatures will begin to slowly decrease. We will have high temperatures remain above freezing, but we will see temperatures below freezing by Sunday night. In fact, isolated snow showers are possible Sunday night into Monday, as some moisture passes through the area, along with a frontal boundary.

By Monday, temperatures will make us remember we are still in winter. Highs will barely get to freezing. Also, I am watching the models very carefully for a coastal low developing Tuesday morning. Right now, a weaker low over New York will help create some snow showers by the middle of the morning on Wednesday. We may see light snow right into Wednesday evening, before ending around early Thursday morning. We will return to dry weather next Thursday.

72 hour forecast:

Tonight: Light to moderate rain this evening, with patchy fog developing after 4 a.m. We will see a low of 34.
Friday: Moderate to heavy rain with a high of 49. Winds will increase from the south-southeast at 12-16 mph. There is the slight chance for thunderstorms, which could produce gusty winds.
Friday night: Rain ends by midnight, with clearing skies the rest of the overnight and a low of 36. Winds will come from the west-southwest at 9-13 mph.
Saturday: Mostly sunny and slightly cooler with a high of 47.
Saturday night: Partly cloudy with a low of 32.
Sunday: Mostly sunny with a high of 44.
Sunday night: Mostly cloudy with passing snow showers and a low of 26.

Extended Forecast:
Monday: Mostly cloudy with isolated snow showers into the late afternoon. Highs 32-35, lows 17-20.
Tuesday: Partly sunny. Highs 29-32, lows 17-20.
Wednesday: Cloudy with light snow by mid-morning. Highs 30-33, lows 16-19.
Thursday: Partly to mostly sunny. Highs 28-31, lows 14-17.

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