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Boston weather: Showers, thunderstorms around for Tuesday

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Forecast discussion: After a weekend of gorgeous, jaw-dropping weather, what we received on Monday could not have been more different. Despite the cloud cover, Logan Airport reached a high of 80 degrees today. We reached 80 yesterday, with bright, sunny skies. The current radar images show some showers are moving into central Massachusetts.

The showers are due to a frontal boundary extending down from the Mid-Atlantic into the Southeast U.S. Moisture will come from the Gulf of Mexico, and we will see embedded pockets of rainfall and isolated thunderstorms on Tuesday. This activity will continue into Tuesday evening. It appears the European model gives us a brief reprieve of dry weather on Wednesday, although an isolated shower remains possible. A weak high pressure ridge will try to build down from Canada, and provide us with some protection from any more rainfall entering Thursday.

However, the ridge will begin to break down. A combination of two low pressure systems will eventually move towards the east coast. We will see some heavier precipitation return by late Thursday night. The front will slowly push through the area, but we will see showers and possible thunderstorms into late Saturday afternoon.

Temperatures will remain pretty uniform over the next several days. The daytime highs will be slightly cooler than normal, thanks to the precipitation and cloud cover. Thanks to higher dewpoint temperatures, the overnight lows will be in the upper 50’s to lower 60’s. The long range models are all agreeing that we will have high pressure clear our skies by early Sunday morning, and giving us great weather for the latter half of the upcoming weekend. Temperatures will slowly climb back into the lower to middle 80’s by next Monday.

72 hour forecast:

Tonight: Cloudy with scattered showers and a low of 63.
Tuesday: Cloudy with isolated showers and thunderstorms with a high of 73. Winds will come from the south-southeast at 8-11 mph.
Tuesday night: Isolated showers/thunderstorms and patchy fog with a low of 59. Wind will shift to the northeast at 6-9 mph.
Wednesday: Partly sunny with a widely isolated shower and a high of 70.
Wednesday night: Cloudy with scattered showers and a low of 59.
Thursday: Cloudy with isolated showers and thunderstorms. We will see a high of 70.
Thursday night: Cloudy with showers/thunderstorms ending in the late evening. We will see a low of 61.

Extended Forecast:
Friday: Cloudy with showers/light rain returning. Highs 72-75, lows 62-65.
Saturday: Cloudy with showers/light rain ending by 6 p.m. Highs 74-77, lows 58-61.
Sunday: Mostly sunny. Highs 74-77, lows 58-61.
Monday: Mostly sunny. Highs 82-85, lows 60-63.

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