Lingering severe storms raise flood threat for parts of the Prairies

Severe thunderstorms could bring heavy rain and localized flooding, as well as damaging winds, to parts of the Prairies throughout the weekend

Thunderstorms have dotted the southern Prairies for the past couple of days as a stubborn pattern lingers over the centre of the country. We can expect that storm risk to continue into Saturday.

Southern Saskatchewan faces a heightened risk, with heavy rainfall and localized flooding possible through Saturday. Meanwhile, we'll see a shift eastward in the stormy weather on Sunday, with Manitoba being the primary recipient.

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Weekend storm risk carries flooding and damaging wind potential

Thunderstorm activity will persist through the weekend across the southern Prairies.

By Saturday, a new low moving in from the U.S. will trigger another round of thunderstorms.

Prairies Saturday thunderstorm risk - Sept. 13, 2025

Heavy rainfall and localized flooding remain a concern across much of southern Saskatchewan, with some areas potentially seeing 30–50 mm or more of precipitation.

Another round of severe storms will be possible on Sunday as the low lifts over the international border.

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Saskatchewan Manitoba Sunday thunderstorm risk - Sept. 13, 2025

Storms are expected to develop along a warm front through the afternoon and into the evening. The front will usher in a humid air mass, so heavy downpours can be expected with some of the storms.

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The main hazard to look out for on Sunday will be damaging winds, as gusts could reach over 100 km/h. There is also a chance for some areas to see large hail that is at least nickel-sized.

Prairies Sunday afternoon forecast storms and precipitation - Sept. 13, 2025

While the southern Prairies will experience the most active weather in Canada, the majority of the country will see predominantly dry conditions over the next seven days, offering a sharp contrast to the stormy outlook for this region.

Stay with The Weather Network for all the latest on conditions across the Prairies.

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