From the National Weather Service:
MAJOR WINTER STORM ...
... Will impact Southern New England on Thursday with blizzard conditions anticipated over southeast portions of New England.
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- Snow, developing early morning, the more moderate to heavy snow impacting the region during the morning into afternoon hours, tapering off into evening. A widespread 8 to 14 inch event is forecast, however, with a band of moderate to heavy snow is expected across the region, an anticipated light and fluffy consistency of the snow, likely to see areas with locally heavier amounts of snow accumulation.
- Snowfall rates of 2 to 4 inches per hour are to be expected at times. Visibility down to a quarter mile or less.
- Temperatures will be dropping through the event resulting in a more light and fluffy, accumulating snow. Snow will be of a heavy, wetter consistency across the S MA and RI coastlines, likely starting off as rain for the Outer Cape and Nantucket. This initially before turning more fluffy.
Strong Possibly Damaging Winds:
- Generally 25 to 35 mph northeasterly gusts across the region
Strongest gusts of 40 to 50 mph, as high as 60 mph across Southeast Coastal MA. Isolated power outages are possible.
- Winds will result in blowing and drifting of snow, adding to lower visibility, even after snow has ended. Snow and blowing snow likely to persist across Eastern MA during the evening into overnight hours.
Coastal / Marine:
- Gale warnings for the eastern waters, Storm warnings for the southern waters. Waves building to 15 to 20 feet at their highest across the Eastern MA coast.
- As waves build during high tide Thursday morning, will see splash-over along the entire Eastern MA coast with areas of minor flooding. Beach erosion as well as inundation of vulnerable shore roads possible.
- Coastal flood advisory in effect from 8 am to 1 pm for the Eastern MA coastline including the Islands.
Into Friday Morning:
- Lot of cold air pouring in ushered by blustery northerly winds. Temperatures falling into the single digits making for wind chills several degrees below zero.