Thunderstorm potential ramps up across the southern Prairies Thursday
Thunderstorm risk increases across southern Prairies Thursday with incoming weather system pushing north
A wet weather pattern develops across the southern Prairies with some significant rainfall possible as we head into the weekend.
DON'T MISS: Canada's 2025 Fall Forecast: An extended pause could redefine the season ahead
Thunderstorms are expected to sweep through southern Manitoba on Thursday, with activity likely affecting areas from Brandon to Winnipeg by early afternoon.
Thursday evening could see severe thunderstorms develop near the Saskatchewan-Manitoba border, as well. The storms may bring hail up to 2 cm in size and strong winds as the primary hazards. It'll be important to stay alert to the weather warnings and changing conditions.
Most of the region will experience temperatures well above seasonal, feeling summer-like at times. However, daytime rain events may result in brief temperature drops in affected areas over the next several days.
Visit our Complete Guide to Fall 2025 for an in depth look at the Fall Forecast, tips to plan for it and much more!
Thursday: Severe storm threat over the southern Prairies
A slow-moving weather boundary advancing north from the United States is set to trigger thunderstorms across southern portions of the Prairies on Thursday. Due to the complex interaction of a low pressure system and a broad high pressure ridge, uncertainties remain regarding the exact locations of storm development.
There will be two areas to watch.
In the morning, storms could develop near Regina, Sask., and may track into southern Manitoba, potentially affecting areas from Brandon to Winnipeg by early afternoon. Strong wind gusts exceeding 90 km/h and heavy rainfall will be the primary threats.
By Thursday evening, the focus may shift toward the Saskatchewan-Manitoba border near the U.S. international boundary. Severe thunderstorms are possible, with risks including hail up to 2 cm in size and strong winds.
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Thunderstorm activity is forecast to remain isolated, but could persist for several days into the weekend. Rainfall totals in some areas may exceed 30-50 mm by the end of the week.
The southern Prairies are expected to be the most active weather region in Canada, while much of the country experiences predominantly dry conditions over the next seven days.
Wondering how the season will play out this year across the Prairies? Be sure to check out the official 2025 Fall Forecast.