Multi-day, severe storm threat spans the Prairies, heavy rain to follow
Strong, early-week storms are ushering in spring-like conditions as summer gets underway, bringing rain, gusty winds, and cooler temperatures to certain regions across the Prairies
Rounds of severe thunderstorms will take aim at the Prairie provinces this week, with large hail and strong winds as the main impacts with storms that develop.
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Heavy rain and much cooler, spring-like conditions will then follow the storm threat later this week, with some areas set to sit 5-10°C below seasonal as summer officially begins. Between 50-100 mm of rain could fall in some of the harder-hit regions this weekend, as well.
Pay close attention to watches and warnings in your area as isolated severe thunderstorms could bubble up on both Tuesday and Wednesday.
Large hail: Severe thunderstorm threat covers parts of the Prairies Tuesday and Wednesday
Scattered storms are expected across all three Prairie provinces on Tuesday. Southern Alberta and Saskatchewan face a heightened risk of moderate-sized hail with these storms.
By Wednesday, a cold front pushing south from the Arctic will confine the storm activity to the southern regions of Alberta, Saskatchewan, and Manitoba.
Strong to severe storms are likely to develop along this cold front, stretching from Calgary, Alta., to Winnipeg, Man.
Areas between Regina, Sask., and Winnipeg are particularly at risk for hail and strong wind gusts.
Heavy rain is not expected to be a major concern due to limited moisture. However, slow-moving storms near the northern foothills could produce localized heavier rainfall.
Heavy rain and very cool temperatures kick off summer this weekend
Focus will shift from the storms to the incoming cooler conditions this weekend, with temperatures during the first few days of summer forecast to be 5-10°C below seasonal averages. This cool and unsettled weather pattern is then set to dominate the latter half of June.
Significant rainfall is also forecast for much of the agricultural regions this weekend, particularly in southern and central Alberta and Saskatchewan, where totals could reach 40-80+ mm, and 20-40+ mm closer to the U.S. border.
Southern Manitoba is also expected to receive substantial rainfall, with 20-40+ mm likely.
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Rain will begin across Alberta on Friday afternoon and evening, as a low-pressure system forms over Montana. This system will gradually bring rain and thunderstorms eastward across the Prairies throughout the weekend.
Summer snow?
In addition, snowfall is expected at higher elevations in the central and southern Rockies by Saturday, primarily above 2,000 metres. Some high-elevation hiking trails could see significant snow accumulation.
Stay with The Weather Network for all the latest on conditions across the Prairies.