Keystone State, including the first and only F5. This WTAE archive video shows some of the widespread damage in Pennsylvania.

It's been 40 years since western Pennsylvania endured one of the worst tornado outbreaks ever to hit the area.

The storm was the latest severe weather to cause deaths and widespread damage in Kentucky. Two months ago, at least 24 people ...

However, the term makes it seem as though a wind not caused by a tornado is flat and even, which it is not. Wind is turbulent and thunderstorm wind is extremely turbulent, and much of the damage ...

This story was updated to add new information, photos, and videos. Several tornadoes reportedly touched down in western and central Wisconsin on May 15 as the storm brought "significant damage" to ...