Around 20,000 people were told to seek shelter on Thursday afternoon as a damaging storm rolled through Virginia.

Severe storms slammed the DMV Friday with damaging winds and a radar indicated tornado. Here's how to tell the difference between the types of damage.

Violent thunderstorms with hurricane-force wind gusts roared across the northern Plains and upper Midwest overnight, downing trees, knocking out power and causing damage in their wake.

Tornado-like vortices are complex, rapidly rotating flow structures that significantly influence wind effects on built infrastructure and natural landscapes.