A Winter Storm Watch is in effect starting at midnight, continuing until late Friday for southeast Massachusetts for heavy mixed precipitation, Martha's Vineyard and Nantucket excluded. Travel will be difficult, especially during the Friday morning commute, where 1-to-2 inch snowfall rates per hour are likely. A Winter Storm Warning is in effect starting at midnight for the remainder of the state into New Hampshire and Vermont for heavy snowfall.
From midnight until 2:00 a.m. on Friday, flurries will begin to fall. From 5:00 a.m. until 1:00 p.m., we'll get the heaviest precipitation and majority of snow accumulation. The majority of the snow will all come in about six to eight hours on the front end of the storm.
Snow could change to sleet, then rain, over Cape Cod and the Islands during this time. But the jackpot zone? That'll be just north of Boston, where residents could get as much as 8 to 12 inches. This area extends from central and southern New Hampshire down through a large portion of Middlesex, Essex and Worcester counties.
Along the Pike (including Boston), down through about Providence and Plymouth, we are forecasting 4 to 8 inches due to a greater threat of mixing and a heavier/wetter snowfall. For the South Coast and upper Cape, only about 2-to-4 inches of snow with lots of mixing.
By 1:00 p.m. Friday, the mixing line, between snow and mixed precipitation will make it's farthest move north. From 1:00 p.m. until 5:00 p.m. most of the action will be in New Hampshire and Maine, and while we still may get some snow in the northern most areas of the Pike, it won't be nearly the same intensity.
This weekend our temperatures will be in the 30s to low 40s by Sunday and there will be plenty of sun. Next week we stay seasonable with more winter-like temperatures remaining most of the week.