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Multi-day severe weather threat marks long weekend on the Prairies

Saturday, July 2nd 2022, 8:27 am - A system trekking across the Prairies will continue east this weekend, bringing a chance for severe thunderstorms in parts of all three provinces and some hefty rainfall totals into mid-next week.

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The rest of the weekend could be quite stormy for parts of the Prairies, with the chance of severe weather appearing Sunday thanks to an unstable air mass, upper-level blocking pattern and a system. On Sunday we will see the threat of severe storms bubble up in parts of southern Saskatchewan, before shifting into extreme southern Manitoba. More on the timing, storm risks and what you can expect into next week, below.


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WEEKEND: THREAT OF SEVERE STORMS BUBBLES UP ON PARTS OF THE PRAIRIES

Unstable air flowing over the southern Prairies will lead to a chance for thunderstorms across the region this weekend. On Sunday we will see the threat of severe storms bubble up in parts of southern Saskatchewan, before shifting into extreme southern Manitoba.

This is a dangerous and potentially life-threatening situation. Take cover immediately, if threatening weather approaches. If you hear a roaring sound or see a funnel cloud, swirling debris near the ground, flying debris, or any threatening weather approaching, take shelter immediately.

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This stormy pattern is the result of an upper-level blocking pattern that’s wedged itself in place over Western Canada. Not only is this atmospheric block responsible for the storms rumbling across the Prairies this long weekend, but it’s also the reason we’ve avoided extreme heat lately.

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Rainfall through Wednesday will come in around 10-30 mm across the southern half of the Prairies, though higher amounts likely in thunderstorms, with heavier totals likely for the Alberta foothills.

Some areas could see 50 mm of rain through Wednesday.

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Beyond the weekend, warmer weather will begin to build across the region again next week as the blocking pattern breaks down. We’ll see a stretch of days with high temperatures in the mid- to upper-20s, with the potential for temperatures and humidex values in the low 30s across southern regions.

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Extreme heat should remain south of the border for this first full week of July.

Stay tuned to The Weather Network for the latest on the storm risk on the Prairies.

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