On Apr 17 in weather history...

1922 -- A tornado traveled from Warren County to Delaware County, Indiana, killing 11 people. Another tornado went through Delaware and northern Madison counties killing 3. It was of F4 strength and dissipated on southwest Blackford County. It picked up a postcard near Orestes, Indiana and dropped it 124 miles away in Ohio with only a torn corner.

1963 -- An F4 tornado touched down in northeast Illinois, raked across the north side of Kankakee, and moved into northwest Indiana, dissipating just west of Medaryville. A much smaller tornado moved from the east edge of Roanoke, Indiana to two miles southwest of Baer Field (Fort Wayne International Airport). Another twister killed an elderly man in his mobile home four miles north of Coldwater, Michigan.

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.