High PWAT (precipitable water) values indicate high moisture, signifying heavy downpours will be a common hazard with the storms.
Sunday’s strongest thunderstorms may produce strong wind gusts, torrential rainfall, and large hail (up to nickel-sized).
Thunderstorm risk extends into Monday with more heavy rainfall
A trough moving into the western half of the Prairies will allow a wet pattern to develop into early this week.
Another round of thunderstorms is likely on Monday across portions of Saskatchewan and Manitoba as moisture and instability continue to stream in from the south.
The risk will be more uniform across Saskatchewan, including for Regina and Saskatoon, and regions in southwestern Manitoba.
Rainfall amounts are more sporadic and localized across Saskatchewan and Manitoba, as it will be driven by convection, compared to the more uniform, heavier precipitation forecast in Alberta.
