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May is a changeable month, and not just because of everyone feeling temperatures warm. The epicenter for tornado activity shifts, tropical storms occasionally form and some can see winter's leftovers ...

This is the time of year, when Texas sees more severe thunderstorms that can spawn tornadoes, you might hear more about where a twister ranked on the Enhanced Fujita scale or its EF rating. Among the ...

Texas sees an average of 135 tornadoes each year, the most of any U.S. state. Here's a look at the worst ones in the Lone ...

The National Weather Service in Memphis resumed their surveys of damage from the numerous tornadoes we saw across our viewing area.

Damage surveys provide crucial information about when, where and how strong U.S. tornadoes are to better understand disaster risk ...

This scale, implemented in 2007, categorizes tornadoes from EF0, the weakest tornadoes, to EF5, the strongest. The wind speeds are just estimates, based on damage surveys conducted by the National ...

Severe storms and possible tornadoes are forecast to continue across a wide swath of the South, the Storm Prediction Center ...

A powerful, wide-reaching spring storm is threatening parts of the central and eastern US, with a life-threatening outbreak ...

However, the most powerful tornadoes, classified as EF5, make up less than 1% of all tornadoes in the United States, and it has been nearly 12 years since one touched down. There have been many ...