(in progess...)
Massachusetts isn't really the sort of place you expect to have strong tornadoes, but around 7pm on Memorial Day of 1995 an F3-F4 tornado tore through Great Barrington, MA. I grew up in a town nearby, and my mother worked in Barrington.
Damage pictures:
The most eerie damage was in another part of the graveyard--may of the grave stones blew over. It looked incredibly creepy when you drove past it at 6 am every morning.
This link has some radar images showing the tornado formation:
SUNY Albany's page
It even inspired a study of torandogenesis in the NE:
Terrain Influenced Tornadogenesis in the Northeastern United States: An Examination of the 29 May 1995 Great Barrington, MA, Tornado
Stats:
NCDC Event Details