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Widespread thunderstorm risk across the Prairies, temperature divide persists

Monday, June 29th 2020, 5:30 am - On Sunday, parts of Manitoba were hit with flash flooding and Environment Canada is investigating a possible tornado near Rapid City. The severe weather threat continues Monday.

Intense thunderstorms brought torrential rain and hail to parts of Manitoba on Sunday and some cities, including Brandon, have been hit with flash floods. The risk for severe weather continues on Monday with severe thunderstorms likely in Manitoba and southeastern Saskatchewan while the storms in Alberta are expected to be non-severe in nature. Details and timing, below.

Visit our Complete Guide to Summer 2020 for an in-depth look at the Summer Forecast, tips to plan for it and much more


  • Severe thunderstorm threat in Manitoba, southeastern Saskatchewan on Monday, non-severe risk of thunderstorms in Alberta
  • One or two tornadoes are possible, along with large hail, strong winds, heavy rain hazards in Manitoba
  • Stormy, wet pattern continues this week
  • Keep on top of ALERTS in your area


A meteorologist with Environment and Climate Change Canada says the weather agency has "a lot of evidence to indicate" that a tornado may have hit in southwestern Manitoba on Sunday afternoon, but so far they have no eyewitnesses and have not been able to investigate the damage to confirm, as reported by CBC.

The thunderstorms that tracked through brought torrential rain and some cities, including Brandon, have experienced flooding. Brandon Police Service tweeted that dozens of vehicles are stranded in several feet and the city is unable to respond due to the adverse weather conditions.


Southwestern Manitoba and southeastern Saskatchewan will once again see the potential for severe thunderstorms on Monday.

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The main hazards include hail, torrential rain, intense wind gusts and one or two tornadoes. By Tuesday up to 100 mm of rain could fall in southwestern Manitoba. Rainfall totals will be much lower in Alberta, where 10-30 mm of rain is possible.

Alberta will also see the risk of thunderstorms on Monday, however, the storms are expected to be non-severe in nature.

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And to top it off, the temperature disparity between east and west will continue, with the extreme heat and humidity confined to Manitoba. With daytime highs approaching or surpassing 30°C, it will feel closer to the high-30s with the humidity in some areas.

Saskatchewan is in the middle of the two extremes in temperatures, remaining comfortable with daytime highs in the low-20s. Alberta will be sharply below-seasonal again, with temperatures stuck in the teens, though the province's extreme southeast may hit 20°C.

Check back for updates as the forecast evolves.

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