(WHDH) — The National Weather Service says blizzard conditions have been confirmed in Boston, Hyannis, Falmouth and Plymouth.
The weather service defines a blizzard as three or more hours of sustained wind or frequent gusts to 35 mph or greater; and falling or blowing snow that reduces visibility frequently to less than one-quarter of a mile.
Parts of Southeastern Massachusetts are supposed to see 20 inches of snow.
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