From the National Weather Service:
Special Weather Statement National Weather Service Boston/Norton MA 406 AM EDT Fri Jun 1 2018 CTZ002>004-MAZ009-011>013-016>024-RIZ001>008-011200- Hartford CT-Tolland CT-Windham CT-Western Hampden MA- Eastern Hampden MA-Southern Worcester MA-Western Norfolk MA- Eastern Norfolk MA-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, Blandford, Springfield, Milford, Worcester, Foxborough, Norwood, Quincy, 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 406 AM EDT Fri Jun 1 2018 ...AREAS OF FOG WILL CONTINUE TO DEVELOP THIS MORNING SOME OF WHICH MAY BECOME LOCALLY DENSE... Areas of fog will continue to develop near and south of the Massachusetts turnpike early this morning. Some of this fog may become locally dense especially near the south coast...reducing visibility to one quarter of a mile or less at times. Motorists are urged to drive with extra caution. Visibilities should improve across most locations by late morning, but may persist longer across the immediate south coast, Cape and Islands.