Chances of Isolated Thunder to Increase as Week Progresses - NBC10 Boston

Chances of Isolated Thunder to Increase as Week Progresses

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    Clouds and Sun With Comfortable Wednesday Air

    Wednesday: Clouds and sun, comfortable air. Highs in the 70s.

    Overnight Wednesday: Partly to mostly cloudy. Lows in the 50s.

    Thursday: Fair. Highs in the 70s.

    (Published Wednesday, Aug. 14, 2019)

    A large dome of high pressure – fair weather – is building into the Northeast and while that usually means a stretch of bright and fabulous weather, there are a few subtle features that make our predicted weather just a bit different this time around.

    One thing is for sure – new, less humid and pleasant air is streaming into New England and promises a great feeling in the air Wednesday into the weekend. An upper-level disturbance moving through New England’s sky this morning is delivering variable clouds and a few sprinkles from west to east, and may even bring a shower or thunderstorm to southwest Connecticut by day’s end.

    Otherwise, the new air holds temperatures shy of 80 for nearly all communities not only Wednesday, but Thursday and Friday, as well. By Friday, a persistent though weak onshore wind flow will have introduced enough ocean moisture that clouds may actually win out Friday.

    Some morning drizzle or sprinkles even a possibility near the coast on Friday.

    In Northern and Western New England, both Thursday and Friday may bring isolated thunder until Saturday. Farther east, though, a Saturday afternoon shower isn’t impossible, though they aren’t likely.

    By Sunday, the wind direction changes and we open the door to deep summer warmth again. Highs will be in the 80s Sunday, then around 90 Monday and likely Tuesday. Humidity will increase Tuesday and increase the chance for scattered thunder.

    Even as a quick shot of cooler air arrives toward the end of next week, we’ll still be talking about daytime highs around or over 80, and another rebound of warmth is possible by next weekend.

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