Environment Canada Thunderstorm watch 3:58 PM EDT Tuesday March 31, 2026
Impact Level: Moderate
Forecast Confidence: High
Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain.
What: 90 km/h wind gusts.
Up to toonie size hail.
Torrential downpours.
Risk of a tornado.
When: Late this afternoon or this evening.
Additional information: Thunderstorms are expected to develop over Michigan or Lake Huron and track east across parts of the region.
When thunder roars, go indoors! Lightning kills and injures Canadians every year.
Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.
Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain.
Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.
For more information: ontario.ca/page/be-prepared-emergency.
In effect for:
Stratford – Mitchell – Southern Perth County
