Wet, possible stormy Sunday on tap on the Prairies amid unsettled pattern
Widespread moisture and unsettled conditions continue to impact parts of the southern Prairies with a stormy pattern in place. Sunday will see a risk of severe thunderstorms for parts of the region
An upper-level trough and abundant, tropical moisture will lead to significant rainfall for parts of the Prairies this weekend, creating localized flooding concerns.
Rainfall totals of 40-80+mm will affect a large swath of the region through Tuesday, with areas that see thunderstorm activity possibly exceeding 100 mm of accumulation.
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On Sunday, forecasters will be watching the Saskatchewan-Manitoba border for the potential of severe storms, including the chance of supercells and a low, but non-zero, tornado risk.
Risk of severe storms on Sunday
Wet and unsettled conditions are expected across Alberta on Sunday as periods of rain continue, especially in southern areas.
Farther east, in Saskatchewan and Manitoba, thunderstorms moved through Sunday morning and will continue to be a risk in the afternoon and evening as they move into the latter province.
For areas around the Saskatchewan-Manitoba border we are watching for the risk of stronger storms, with the chance for supercells to develop. That will bring all severe weather risks on the table, even a low, but non-zero, tornado risk.
On Monday, another round of showers and thunderstorms are expected for parts of the Prairies as a low-pressure system moves in from the south.
The system is getting \more organized and will be helping to deliver higher rainfall totals as it moves through the area, expected to linger until Tuesday for some areas.
Rainfall totals will vary, but Saskatchewan appears to be the target for some of the heaviest preciciptation overall, as well as southern Manitoba.
Some communities could see as much as 100 mm of rain as beneath embedded thunderstorms.
This kind of rain is beneficial for areas that ran dry in July, but it will also have a major impact on fall harvest efforts. Additionally, areas downstream from the heavy rain in Alberta should be on the lookout for rising water levels.
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