Six tornadoes spawned by storm 

Six tornadoes were spawned by this storm including an F3 tornado in Flat Rock, Michigan. I don't really know if the tornadoes were actually spawned by the derecho. I know that on July 15, 1980 a derecho spawned ten tornadoes (maximum F3 strength) in Eau Claire, Wisconsin and the New York City Labor Day Derecho spawned four tornadoes including an F2 in [[Lynbrook, New York. So I don't see how the tornadoes wouldn't have been associated with this storm.