Tornadoes are a relatively rare event. Only a tiny percentage of thunderstorms ever go on to produce a tornado. No two twisters are alike —and some of those storms are truly bizarre. From twin ...

The 1999 storm, churning at more than 300 miles per hour, was an E-F5 monster, leaving a path of destruction 41 miles wide and some of the fastest wind speeds for a tornado ever recorded.

Reaching up to a mile wide at times, it damaged 219 miles and was categorized as an F5 tornado -- the highest rating on the original Fujita scale -- with winds between 261 and 318 mph.