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

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 ...

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

Summer in Ontario may bring with it warm weather, but last week's tornado in Lucan is a reminder that it’s also tornado ...

Any severe thunderstorms that form across northwestern Ontario could pack damaging winds, large hail, and heavy rainfall. One or two tornadoes are possible, especially around the international border ...

Both tornado warnings and watches are in effect for parts of Ontario as powerful storms sweep through the region. The setup brings the risk of tornadoes, large hail, damaging winds, and intense ...

A risk for thunderstorms will redevelop on Sunday as a cold front pushes into an unstable atmosphere across southern Ontario. The storms will develop inland and track through the Greater Toronto Area ...

Strong thunderstorms are expected to develop in the early to mid-afternoon hours and continue through the evening across ...

Environment Canada has issued a severe thunderstorm watch west of Gatineau Thursday, noting a tornado could develop.The watch ...

Multiple rounds of severe storms are likely across eastern Ontario and southern Quebec Thursday. These storms could carry all hazards, including the potential for tornadoes in some regions. Stay alert ...

More than 40,000 local customers are without power after Thursday evening's series of thunderstorms.Severe thunderstorm ...