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The long weekend could be quite stormy for parts of the Prades, with the possibility of severe weather in the three provinces on Saturday and Sunday thanks to an unstable air mass, a higher level blocking pattern and a system. . Saturday will see the threat of heavy bubble storms in parts of Alberta and southern Saskatchewan, remaining this past Sunday and moving to the far south of Manitoba. Learn more about the weather, storm hazards and what to expect next week, below.
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WEEKEND: THE THREAT OF STRONG STORMS BUBBLES FROM PREY
The unstable air flowing over the southern prairies will cause the possibility of storms across the region this weekend. The greatest threat of bad weather will cover parts of Alberta and Saskatchewan on Saturday, and then move to the southern extremities of the latter and Manitoba on Sunday.
On Saturday, there will be possible storms from the Southern Rockies to Manitoba. There could be enough instability for storms to reach severe limits in the foothills of Alberta, including the Calgary metropolitan area. The dynamic is also conducive for strong storms to blow through southern Saskatchewan, including the Regina area.
Saturday’s strongest storms could produce heavy hail, strong winds and heavy rain.
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This stormy pattern is the result of a top-level blocking pattern that has fitted into western Canada. This atmospheric block is not only responsible for the storms that hit the Prades this long weekend, but it is also the reason why we have avoided the extreme heat lately.
On Sunday, the storm threat moves out of Alberta and into the extreme areas of southern Saskatchewan and Manitoba, also where there will be the best chance of severe storms.
The potential dangers will be the same as Saturday’s severe storm risk: heavy rain, heavy hail and strong gusts of wind.
Rainfall through Wednesday will be about 10-30 mm in the southern half of the prairies, although it is likely the highest amounts in storms, with more intense totals likely in the foothills of Alberta.
Some areas could see 50mm of rain until Wednesday.
Temperatures on Saturday will reach around the season in much of the southern prairies, with temperatures slightly colder than the seasonal ones facing Sunday.
Beyond the weekend, warmer weather will begin to rise across the region next week as the lockout pattern breaks. We will see a stretch of days with high temperatures between the middle and upper 20s, with the potential for humidex temperatures and values at 30 low in the southern regions.
Extreme heat is expected to remain south of the border during this first full week of July.
Stay tuned to The Weather Network for the latest news on prairie storm risk.