Intensity and Frequency
1950 - 2009
How often does a certain type of tornado strike? Are some states more susceptable than others? Take a look at our the breakdown of tornadoes 1950-2009. Click on the pie chart to see how often certain types of tornadoes have been reported across the nation. See which tornadoes are more likely to visit your state.
TORNADO DAMAGE DESCRIPTIONS
F0 - Gale: Chimney damage, broken tree limbs, sign damage.
F1 - Moderate: Peels surface off roofs; mobile homes pushed/overturned; autos pushed off road.
F2 - Significant: Considerable damage; roofs torn off frame house; mobile homes demolished; large trees snapped/uprooted.
F3 - Severe: Roof and some walls torn off well constructed homes; trains overturned; trees uprooted.
F4 - Devastating: Well constructed houses leveled; structures with weak foundaitons blown into distance; cars thrown
F5 - Incredible: Strong frame houses lifted off foundations; steel reinforced concrete structures badly damaged; auto-sized missles flying.