Residents across the Canadian Prairies are bracing for a volatile weather shift as severe thunderstorms are expected to develop throughout Sunday, June 7, 2026. The incoming system brings a significant risk of very large hail and the potential for tornadoes, following a Saturday that saw tornado-warned storms produce baseball-sized hail in Manitoba.
Why the severe weather risk is increasing
Meteorological conditions are aligning to create a widespread threat across southern Saskatchewan and Manitoba. According to weather reports, the afternoon and evening hours will see a combination of ample instability, rich moisture, and strong upper-level winds. This convergence of factors is expected to act as a trigger for storm development, creating a more expansive area of concern than the activity witnessed on Saturday.
The severe weather system is expected to impact areas near the shorelines of Lake Winnipeg, Cedar Lake, and Lake Winnipegosis, where the heaviest rainfall totals are currently anticipated.
Managing the ongoing storm impact
The current weather pattern is not only causing new developments but is also characterized by lingering risks from overnight activity. Storms that began on Saturday have shown the capacity to regenerate through the overnight hours, contributing to a persistent risk of flooding rainfall. Authorities advise that residents take time to ensure emergency supplies are ready and that a clear safety plan is in place should severe weather strike their specific location.
The transition from Saturday’s localized tornado-warned cells to a broader, more widespread Sunday event highlights the volatility of this atmospheric setup. When you see this level of instability paired with strong upper-level winds, the primary challenge for residents is the rapid onset of conditions, which necessitates constant monitoring of local alerts rather than relying on static forecasts.
What may happen next
As the primary event moves through the region during the afternoon and evening, the risk of severe thunderstorms is likely to remain high. If the current atmospheric instability continues to fuel these systems, additional tornado warnings or localized flooding could occur in southern Saskatchewan and Manitoba. Residents are encouraged to stay updated on changing conditions as the weather system evolves.
Frequently Asked Questions
What kind of damage did the storms cause on Saturday?
Saturday’s storms were tornado-warned and capable of producing baseball-sized hail, particularly in Manitoba.
Which areas are expected to see the most rain?
The greatest rainfall accumulation is expected in southeastern Saskatchewan and western Manitoba, with the heaviest totals concentrated along the shorelines of Lake Winnipeg, Cedar Lake, and Lake Winnipegosis.
Is Sunday’s weather threat different from Saturday’s?
Yes, the risk on Sunday is expected to be more widespread than the activity observed on Saturday, driven by a combination of instability, rich moisture, and strong upper-level winds.
How are you and your family preparing to stay safe during this period of severe weather volatility?