Three tornadoes are confirmed to have occurred in the same Ontario area last weekend. The Northern Tornadoes Project said ...

Several rounds of severe thunderstorms swept through northwestern Ontario during the day Sunday, first in the morning and ...

A Thursday evening storm system that briefly included a tornado warning southwest of Ottawa is on its way out of the region.

Farther north, a cold front over far northwestern Ontario will force the development of several rounds of additional ...

Thursday is shaping up to be the most active day of the week for severe weather potential in Ontario and Quebec, with a ...

Severe storms swept across Ontario Thursday, cutting power to thousands and toppling trees and power lines. Officials are ...

Environment Canada issued tornado and severe thunderstorm warnings for parts of northwestern Ontario on Sunday.

Parts of southern Ontario could get severe thunderstorms with a risk of a tornado on Thursday. While the heat warning ...

Large hail is expected to be the biggest threat, ranging from the size of a loonie to a ping pong ball-sized hail. Between the afternoon to evening, multiple rounds of storms will continue to hit ...

Thursday expected to bring highest severe weather risk this week for Ontario and Quebec, including tornado potential ...

Severe weather researchers say a weak tornado touched down in a community north of London, Ont., on Monday afternoon.