Details here. One fatality reported in west Springfield. I believe there is significantly more damage and, over a wider area, than the media seems to realize at this point.
Saying that at least two tornadoes had touched down in the state and damage had been reported in at least 19 communities, Governor Deval Patrick announced this evening that he was declaring a state of emergency and mobilizing 1,000 members of the National Guard to help in search and rescue, debris cleanup, and other recovery tasks.
Above from the Boston Globe.