59 of those tornadoes touched down in the U.S., with Canada's sole F5 twister hitting Elie, Manitoba, on June 22, 2007. EF-Scale ratings are assigned based on damage, not actual wind speeds. Crews are ...

Even by Plains standards, this was an unusually large, violent tornado outbreak so early in spring. One Kansas tornado was ...

Tornadoes in the U.S. typically increase sharply in spring. Unfortunately, a few of those can be violent tornadoes, particularly in the South. On March 3, 1966, 59 years ago today, an F5 tornado ...

From Logan School’s top floor, 11-year-old Othella Silvey should have been able to see her house easily — it was less than ...

Tornado classifications have evolved since the original Fujita (F scale) was developed in 1971. Under the original F scale, an F5 rating was given as follows: “Whole frame houses tossed off ...

Each year, an average of 15 tornadoes hits Michigan, according to the National Weather Service. A tornado that ripped through Livonia last year was fatal. Twisters also can cause millions of ...

The Great Tri-State Tornado, the longest tracked F5 tornado in U.S. history, devastated Southeast Missouri, Illinois, and ...

T​ornadoes in the U.S. typically increase sharply in spring.​ Unfortunately, a few of those can be violent tornadoes, particularly in the South. On March 3, 1966, 59 years ago today, an F5 tornado ...

Modern standards qualify the so-called Tri-State Tornado as an F5, a mile-wide funnel with wind speeds greater than 260 mph (418 kph). Perhaps the best evidence of its destructive handiwork was ...