From the National Weather Service:
Special Weather Statement National Weather Service Taunton MA 457 PM EST Fri Dec 15 2017 CTZ002>004-MAZ017>024-RIZ001>008-160000- Hartford CT-Tolland CT-Windham CT-Northern Bristol MA- Western Plymouth MA-Eastern Plymouth MA-Southern Bristol MA- Southern Plymouth MA-Barnstable MA-Dukes MA-Nantucket MA- Northwest Providence RI-Southeast Providence RI-Western Kent RI- Eastern Kent RI-Bristol RI-Washington RI-Newport RI- Block Island RI- Including the cities of Hartford, Windsor Locks, Union, Vernon, Putnam, Willimantic, Taunton, Brockton, Plymouth, Fall River, New Bedford, Mattapoisett, Chatham, Falmouth, Provincetown, Vineyard Haven, Nantucket, Foster, Smithfield, Providence, Coventry, West Greenwich, East Greenwich, Warwick, West Warwick, Bristol, Narragansett, Westerly, Newport, and New Shoreham 457 PM EST Fri Dec 15 2017 ...Accumulating Snow Begins During The Evening Commute In Connecticut...Rhode Island and Southeast Massachusetts... At 5 PM light snow was developing across southern Connecticut and advancing to the northeast. Expect light snow to overspread the remainder of southern and central portions of Connecticut into Rhode Island and southeast Massachusetts through 7 pm. Snow will then become steady and moderate for a time from about 8 pm to 11 pm with the northern edge of this accumulating snow into eastern Connecticut to Providence to Plymouth, with snow accumulations of an inch or two before tapering off from 11 pm to 1 am, again from west to east. Heavier snow accumulations of 2-4 inches is expected along the south coast of RI and MA. There is some uncertainty how far north this steadier and heavier band of snow will track. There is a low probability it may move into the Greater Providence area eastward into the route 44 corridor of southeast Massachusetts. Regardless, given the cold temperatures it will only take a small accumulation for untreated roads to quickly become snow covered and slippery. Allow extra time to reach your destination and exercise caution.