More than 300,000 Bay Staters are without power this morning as a nor'easter continues to pound winter-weary Massachusetts.National Grid reports it has 277,524 customers without power; Eversource, 56,668.Snowfall totals vary wildly across the state, from 2 inches in Weymouth, to 7 inches in South Boston, to 17 inches in Worcester County, according to the National Weather Service.A winter storm warning will remain in effect until 1 p.m.