A strong supercell thunderstorm that crossed parts of southwestern Ontario on Saturday produced three separate tornadoes in ...

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

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

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

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

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 ...

You could get into some heavy downpours, especially through those (southwestern) areas,” an Environment Canada meteorologist ...

Environment Canada updates that conditions are favourable for the development of dangerous thunderstorms that may be capable ...

Hazards: Wind gusts up to 110 km/h Torrential rainfall with amounts possibly in excess of 50 mm Nickel sized hail A tornado ...

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

Thursday will be a day to be weather-aware in eastern Ontario and southern Quebec, which will see numerous storms roll in ...