Slow-Moving Nor'easter Bringing Snow to Region - NBC10 Boston

Slow-Moving Nor'easter Bringing Snow to Region

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    Weather Forecast: Snowfall Amounts Scaled Way Back

    Tonight: Developing snow. Low 30s.
    Thursday: Snow tapers to flurries by noon. Melting. Low 40s. Total snow accumulations 1-3 north and Greater Boston, 3-5 south.
    Friday: Partly sunny. Low 40s.

    (Published Wednesday, March 21, 2018)

    Here we go again. Wednesday’s clouds give way to developing rain and snow from south to north, which will be very slow to expand from midday to evening.

    With highs in the 30s, snow will melt quickly and easily on treated roads and interstates until after dark, when snowfall rates increase and the impact of very dim sun through clouds is lessened.

    Hour by Hour Timing, Impacts, and Snowfall TotalsHour by Hour Timing, Impacts, and Snowfall Totals

    A northeast wind will increase to 15 to 25 mph with gusts to 45 mph at the coast and over 50 mph on Cape Cod between 11 p.m. and 4 a.m., causing only isolated or widely scattered power outages.

    When combined with a 3 a.m. high tide, the combination of high water and building waves offshore to 15 to 20 feet will likely bring minor coastal flooding two hours either side of high tide, particularly in vulnerable South Shore locales.

    Bursts of heavier snow will occur overnight into early Thursday morning, likely resulting in snow covered and slick roads and some delays Thursday morning.

    Total snowfall is expected to be between 6 to 10 inches in Greater Boston, with localized variability owing to pockets of dry air aloft, and higher amounts in Connecticut.

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    Lingering light snow will break apart to snow showers Thursday morning, leaving flurries and sprinkles with raw air for the rest of the day.

    A new disturbance aloft Friday will bring more clouds than sun, a chance of afternoon snow showers north and evening snow showers south.

    Saturday should be quieter for most of New England, but later Sunday into Sunday night we may be grazed by yet another storm passing close.

    We’re hopeful the moderating temperatures showing up next week in the 10-day forecast will hold.

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