Skip to content

Thunderstorms bring risk of tornado: Environment Canada

Severe thunderstorm watch issued for the region
storm clouds AdobeStock
Stock image

Severe thunderstorm watch in effect for:
    •    Manitoulin Island

Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing damaging wind gusts, large hail and torrential rain.

Wind gusts near 100 km/h
Ping pong ball size hail
Torrential downpours with rainfall amounts possibly in excess of 50 mm
Risk of tornadoes

Into this evening

Thunderstorms are expected today. Some of these thunderstorms may become severe with strong winds, large hail and heavy rain. Tornadoes also can not be ruled out. The potential for severe thunderstorms will come to an end this evening.

If conditions become more favourable for tornadoes, this watch will be upgraded to a tornado watch.

Large hail can damage property and cause injury. Very strong wind gusts can damage buildings, down trees and blow large vehicles off the road. Remember, severe thunderstorms can produce tornadoes. Heavy downpours can cause flash floods and water pooling on roads. Stay indoors when a thunderstorm strikes.

There isn't a place outside that is safe during a thunderstorm.

Severe thunderstorm watches are issued when atmospheric conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, torrential rainfall.

The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to or tweet reports using #ONStorm.