Where Twisters Strike

Tornadoes 1950-2013, rated 1 to 5 on the Enhanced Fujita (EF) scale. Twisters frequently strike in the Deep South as well as in the Great Plains. The EF scale is based on wind speed and degree of damage.
MARTIN GAMACHE AND VITO ZARKOVIC, NGM STAFF
CRAIG HOWARTH, 422 SOUTH
SOURCES: NOAA, TWISTEX