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 ...

The most extreme tornadoes have winds over 200 mph and can measure over a mile wide, and it has been over a decade since the ...

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

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 ...

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 ...

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

At 1:19 p.m., the National Weather Service said, a severe thunderstorm capable of producing a tornado was located over Derry, or near Latrobe, moving northeast at 60 mph. × This page requires ...