The Prairies will be the focus of erratic weather this week with an active storm trajectory launching many systems as we welcome summer. After a few days of strong thunderstorms, including the observation of a tornado that caused a warning on Monday, Tuesday will decrease, but some cells could grow in areas of all three provinces and in northwestern Ontario. Beyond that, the chance of severe weather will return with another system later in the week. For more on what will follow on Tuesday and this week, read below.

THIS WEEK: LARGE THUNDERSTORM THREAT IS WATCHING

The possibility of active weather will continue in much of Western Canada this week. While meteorologists do not expect a significant or organized low pressure system like the one we saw last week, many rounds with heavy rain and thunderstorms are possible. For southeastern Manitoba and northwestern Ontario, a cold front would pose a risk of thunderstorms overnight overnight once again. A trough will carry the risk of some severe storms in southern Saskatchewan, also overnight.
The strong storms that will develop will be scattered and could bring strong winds, heavy hail and heavy rainfall. SEE ALSO: Get over the heat, sun and summer storms with these things Another widespread but only a minor thunderstorm threat will cover much of the area on Tuesday. Beyond that, another system will develop east of the Rocky Mountains on Thursday and will follow east through Friday with heavy rain and thunderstorms, including the possibility of strong to strong thunderstorms. Heavy snow is expected in the central Rockies, especially along the Icefields Parkway from Lake Louise to Jasper Wednesday night and Thursday. Temperatures heat up in southern Saskatchewan and Manitoba on Thursday, with temperatures reaching over 20 and below 30, but much colder throughout Alberta. The coldest weather will spread throughout the region at the end of the week, with temperatures almost or below the season prevailing from this weekend until the middle of next week. WEATHER EXPLANATION: Understanding CAPE, the fuel that feeds a storm

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Be sure to check back for updates this weekend as we continue to adjust forecast details. The miniature is courtesy of Jecey Buburuz.