Wallingford, CT Tornado, Aug 1839
"On Monday, Aug. 7, 1839, a tornado passed over a point not far from the line of the Wallingford storm. Its direction was such that it did not strike places where human habitations existed, though it was a fearful tempest. Mr. James Bolter of this city visited the spot at the time, and Prof. Brocklesby, of Trinity College, who was then in New Haven, has a distinct recollection of the storm. The Courant of the time says an immense quantity of rain fell. It was be observed that the three tornadoes of 1787, 1839, and the one in Wallingford, occurred in August."
The New York Times, New York, NY 13 Aug 1878