CatIQ raised its insured loss estimate for the 2 to 3 September convective storms across southern Ontario to C$671 million ($478 million), from C$563 million. The event falls outside the Insurance Bureau of Canada's summer total, so it comes on top of the C$3.7 billion summer.

Source: CatIQ, via Reinsurance News (2026-10-21). Converted at the 21 October rate.