Perhaps the signature of the event was an F5 tornado that hit Hesston, Kansas, about 30 miles north-northwest of Wichita. This well documented, up to three-quarter mile wide tornado first touched ...

The Great Tri-State Tornado, the longest tracked F5 tornado in U.S. history, devastated Southeast Missouri, Illinois, and Southwest Indiana on March 18, 1925, leaving a trail of destruction and ...

Violent tornadoes — those rated F4/EF4 and F5/EF5 — are much rarer. Only 89 such tornadoes were reported during the same time period, accounting for 0.9% of all tornadoes. In fact, only six ...

(Jackson County (Ill.) Historical Society via AP) Jackson County Historical Society President Laura Cates Duncan, right, and Mary Riseling, a society board member and coordinator of the 100th ...