Slightly OT, perhaps, but seems relevant to the thread... the NWS has confirmed that we had an EF-1 tornado here in Vermont a couple of weeks ago.
http://www.erh.noaa.gov/btv/events/18July2008/
Nothing like ya'll get in the Plains, but we've had some pretty dramatic (and beautiful) storms here this spring and summer.
On the subject of New England tornadoes, my husband was witness to the F-4 tornado that hit New Haven and Hamden, CT back in 1990. He didn't even know what was happening -- I'm the weather weenie, so the fact that the sky was green meant nothing to him
-- but he figured out it was something out of the ordinary when the skylights got sucked out of his apartment. When it was over, all of the storefronts directly across the street from his building had been destroyed.