A massive tornado intercepted by a storm chaser in South Dakota was seen twisting and transforming right before him.

3:21 p.m. EDT - A tornado watch is in effect across portions of northern Ontario amid a severe storm threat on Saturday ...

4:18 p.m. CDT - A tornado watch remains in effect across portions of northern Ontario as a line of severe thunderstorms moves ...

A tornado watch has been issued for some parts of central Alberta due to severe thunderstorms popping up Wednesday afternoon.

Severe storms may bring large hail, strong winds and a low tornado threat to Alberta mid-week. Alberta's heat wave is peaking ...

A tornado watch has been issued for parts of northeastern Ontario as conditions become favourable for severe thunderstorms ...

On Tuesday at 5:02 p.m. the National Weather Service issued an updated tornado warning in effect until 5:15 p.m. for Berks ...

Take cover, a tornado warning was issued by the National Weather Service in Mount Holly on Tuesday, July 1, from 4:47 p.m.

The National Weather Service released an updated tornado warning at 5:02 p.m. on Tuesday in effect until 5:15 p.m. for Berks ...

A tornado warning has ended for an area southwest of Edmonton. The warning, issued at 5:15 p.m. Wednesday, covered Wolf Lake, ...