This less-than-quarter-mile-wide drill bit of a twister produced mainly F3 to F4 damage, but then intensified to an F5 just east of the village.

The Plainfield tornado touched down on Aug. 28, 1990, and remains the only F-5 tornado ever recorded in the state of Illinois. Even more staggering, it remains the strongest August tornado on record ...

One massive twister moved from Ohio into Pennsylvania, destroying everything in its path, and still stands as the only F5 tornado on the Fujita Scale to strike Pennsylvania.

Incredibly, nobody was killed in this tornado, but 12 were injured. Oakfield remains one of only three F5 (or EF5) tornadoes on record in Wisconsin and the only known F/EF5 U.S. tornado to have ...