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Cold Air Returns

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    NEWSLETTERS

    Weather Forecast: Cold Air Returns, Freezing Start Thursday

    Tonight: Clear and colder. Lows in the 20s. Near 30 in Boston. Winds ease.

    Tomorrow: Sun with increasing PM clouds. Low 40s.

    Friday: Early sprinkle, then increasing sun. Near 50.

    (Published Wednesday, Nov. 29, 2017)

    Temperatures soared Tuesday night, up to 50 degrees by midnight, then kept going up into the lower 60s in southern New England by Wednesday afternoon.

    At noon, when Boston was 60 degrees, a squall in northern Vermont was generating heavy snow and thunder, at the same time. The Stowe Mountain resort had to temporarily shut its ski lift due to lightning midday, a rare eventd. A quick inch of snow fell there even as the temperature warmed further into the 60s in southern New England. By late Wednesday the squall had moved off shore, but the wind was gusting past 40 mph in southern New England.

    The wind will relent and the temperature will plummet Wednesday night, and it will be back down to freezing for everyone by Thursday morning.

    With a bright moon and a clearing sky, the temperature will bottom out in the 10s to low 20s well north, and 20s to low 30s toward the south coast.

    We have a quiet Thursday with fading sunshine.

    Temperatures slowly climb through the 30s to 40s south and hold in the 30s north. Another front pushing into New York will generate clouds for a rather gray sunset.

    Our wind that briefly becomes light for sunrise increases from the south by afternoon at 10-15 mph, though it may be gusting to 35 mph late in the Champlain Valley of Vermont.

    The next front is going to race in Thursday night, with the rain showers likely after midnight, mixed with snow in the mountains.

    Temperatures overnight into Friday will hold steady in the 30s to lower 40s.

    Friday may start off damp with showers in eastern New England, and an inch or two of snow in the mountains, but the sky will clear rapidly with temperatures rebounding to the 40s in southern New England, and 30s north.

    Freezing weather returns again Friday night with high pressure from Canada, and low temperature will be in the 20s.

    The weekend is starting to come into better focus with high pressure from Canada in control. That means more sun and clouds, with high temperatures in the 40s, and low temperature in the 20s.

    Next week we see a dramatic shot of cold air entering the Great Lakes even as warm to record-warm air over the southeastern United States tries to come back toward New England.

    That sets up quite a boundary with dry weather to start the week, but rain likely arrives by late Tuesday. As temperatures gradually cool we may see showers of rain on Wednesday that transition to snow by Thursday. It looks like an unsettled stretch, that may end up with white ground all the way to the coast by the end of next week. We will keep you posted as it gets closer.


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