1904 Chappaqua tornado

The 1904 Chappaqua tornado was an intense tornado that struck northern Westchester County, New York during the afternoon of July 16, 1904. As of 2009, this tornado ranks as the strongest tornado to touch down in the county, ranking as F3 on the modern-day Fujita Scale.[1] The tornado formed around 3:30 pm EST within a severe thunderstorm near Chappaqua, New York. The tornado quickly began to produce damage in the town, destroying several structures and killing two people. Homes were knocked off their foundations and rolled over along the tornado's path. By 4:00 pm EST, the tornado dissipated and left $100,000 (1904 USD; $2.4 million 2009 USD) worth of damage in its wake. Hail associated with the same storm cell also inflicted damage upon a few structures. The tornado is known as the worst disaster in the history of Chappaqua.

http://en.wikipedia.org/wiki/1904_Chappaqua_tornado