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Unsettled start to the Prairies' weekend, chilly for some

Friday, August 7th 2020, 8:55 pm - The weekend holds some non-severe risk for some areas, with downpours for parts of northern Saskatchewan and Manitoba.

The risk for severe weather is still there Saturday on the Prairies, though with much less severe potential, except for a slice of northwestern Ontario. Still, northern parts of Saskatchewan and Manitoba are in for heavy downpours, while the western Prairies will have to endure a bit of a chill before things return to seasonal Sunday. Details and timing, below,


WEATHER HIGHLIGHTS:

  • Scattered non-severe storm risk in several provinces, some severe possible in northwestern Ontario
  • Heavy downpours in northern Saskatchewan and Manitoba
  • Cool start to the weekend in Alberta
  • Keep on top of active weather ALERTS in your area

THE WEEKEND: UNSETTLED, SEASONAL TEMPERATURES RETURN

The surface low that helped fuel some of the Prairies' storm risk Friday looks to all but stall Saturday, bringing copious rainfall to parts of northern Saskatchewan and Manitoba, topping as much as 100 mm through the weekend, as well as some non-severe storm risk.

At the same time, an upper trough merging with that low will move into Alberta, bringing the risk for non-severe thunderstorms to central and northern areas. Far to the east, there's a slight chance of severe storms in northwestern Ontario.

PR Risk Weekend

On Sunday, the low will continue to bring showers in northern Saskatchewan, while a boundary will push into Manitoba in the morning, bringing showers and a risk of afternoon thunderstorms. There is a slight chance for some to reach severe levels in the southern areas along the U.S. border, but thunderstorm energy looks to be limited.

Back west, that upper trough has actually been bringing cooler temperatures to B.C. and the western Prairies, such that most places in Alberta experienced an eight-degree temperature drop between Thursday and Friday. Those cooler temperatures linger in Alberta Saturday, with some communities possibly not cracking 20°C.

By Sunday, however, things look to even out somewhat, with mostly seasonal temperatures across the Prairie region.

PRTEMPSUN

But that upper level trough is likely to bring some snow at the very high elevations of the Rockies, with snowfall already accumulating Friday. The Northern Rockies may see freezing levels drop to 2,200 metres.

Stay tuned to The Weather Network for the latest updates.

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