A supercell storm along the Mason-Dixon Line brought nearly hurricane-force winds through northern Maryland and southern PA ...

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 ...

It is at this stage that a thunderstorm becomes a supercell ... to EF5 (incredible destruction). Winds are estimated from damage done to structures, cars and even the ground. A tornado will ...

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 ...

Note: This video is from May 2011. JOPLIN, Mo. – Almost 14 years after the deadly EF5 tornado tore through Joplin, Missouri, Netflix released a documentary Wednesday highlighting the immense ...

Tornado and severe weather season in the central U.S. have ramped up this spring. Last week was especially tough as at least 50 twisters were reported from the Deep South northeastward into Michigan.

Seven violent tornadoes produced catastrophic damage that day; four of those were EF4, and three were EF5. One destructive EF5 tornado ripped through multiple counties in both North Alabama and ...

Multiple tornadoes were reported Thursday evening from two supercell thunderstorms that traveled from Nebraska into Iowa. At least six reports came from southwest Iowa, although the National ...

In a video shared by the National Weather Service in Pittsburgh, officials explained that on Saturday evening, a long-lived supercell storm tracked through Ohio, West Virginia, Pennsylvania ...