CatIQ has raised its industry loss estimate for the June 9 to 10 severe storm outbreak in southern Saskatchewan and Manitoba to $923 million, up from $850 million at the 45-day mark and $728 million in the initial post-event estimate.
Commercial property losses drove this latest increase, a shift from the earlier revision, which CatIQ attributed primarily to motor claims. A fourth estimate is due December 10, six months after the event, alongside updated forward sortation area-level loss data.
The storms brought tornadoes, hail up to 10 centimetres in diameter, damaging winds and record rainfall across both provinces. The event now ranks third-highest by claims count in CatIQ's entire catastrophe database.
Saskatchewan Government Insurance has said it expects more than $100 million in damage from the June 9 Regina hailstorm alone after receiving roughly 13,000 claims, calling it one of the largest hail events in its history. Manitoba Public Insurance received 29,195 hail-related claims from the same storm system, surpassing its previous single-event record of 24,000 claims set in 1996.
"Canada experienced severe weather-related loss events at an above-average pace in the summer of 2026," said Laura Twidle, CatIQ's president and CEO. "The June storms in Saskatchewan and Manitoba marked the start of a ten-week stretch that saw at least one severe convective storm event reach the catastrophe threshold each week."
She added that, unusually, strong thunderstorm activity continued into late August and early September, and that while hail and wind drove much of the damage, "2026 seems destined to be remembered for its storm-related flash flooding," with numerous communities recording their wettest summer on record.
Twidle has separately described this year's pattern as "2023 amplified," a season defined less by a small number of record-setting disasters and more by the frequency and geographic spread of significant events.
By the end of June alone, catastrophe claims from Canadian events had already exceeded 100,000, and Twidle said CatIQ has heard from several insurers that at least one Prairie event this year is likely to rank among the worst single weather events they've experienced, a characterization the SGI and MPI claims records for this specific storm support directly.
This Prairie event joins a summer that also produced Ontario's September 2 "100-year storm" in the GTA, with Gallagher Re estimating hail-driven losses reaching well into the hundreds of millions; a Cape Breton flooding event serious enough to trigger a state of local emergency and a fatality; and a historic wildfire season in northwestern Ontario, including Thunder Bay 36, the largest wildfire in the province's recorded history.
Layered together with this Prairie outbreak's own escalating estimate, the pattern IBC has been building its policy case around, that Canada can no longer treat extreme weather as a series of isolated emergencies, has considerable, event-by-event evidence behind it this year specifically.
The move from motor-driven to commercial-property-driven loss growth between CatIQ's second and third estimates is a meaningful signal in its own right.
Commercial claims typically take longer to fully quantify than personal auto or residential claims, since business interruption, contents and equipment losses require more extensive documentation and adjustment.
That this event's growth has now shifted toward the commercial side, three months in, suggests the full extent of business-side losses is still being established, and brokers with commercial clients in the affected Prairie corridor should expect this event's final tally in December to keep climbing rather than stabilize at $923 million.
