Ontario, Quebec storms cost insurers $439-million

By the Editorial Team · Friday, August 28, 2026

Severe thunderstorms that struck Ontario and Quebec between June 30 and July 3 caused an estimated $439 million in insured damages, with Ottawa experiencing record rainfall and widespread flooding. The storm’s financial impact highlights the strain on insurers and emergency services as affected communities begin recovery efforts.

Severe thunderstorms that swept through Ontario and Quebec during the Canada Day holiday caused an estimated $439 million in insured damage, according to new figures released by Catastrophe Indices and Quantification Inc. The storms, occurring between June 30 and July 3, brought intense wind, hail, heavy rainfall, and flash flooding to numerous communities in both provinces.

The Insurance Bureau of Canada highlighted Ottawa as one of the areas most impacted by the extreme weather. On July 1, the city recorded a daily rainfall total of 118 millimeters, setting a new record. The intense downpour led to widespread flooding, with streets and highways submerged under water. According to local officials, more than 4,500 basements were flooded in the region during the event.

The reported $439 million figure encompasses insurance claims related to damage to both property and vehicles. This estimate provides an initial assessment of the storm’s financial impact on the insurance sector.

The storms disrupted daily life for many residents, causing significant property damage and infrastructure challenges. Insurers and emergency services responded to a surge in claims and assistance requests following the severe weather episodes.

Authorities continue to monitor the situation and assess longer-term recovery needs as communities address the aftermath of the storms.

This article was reported by synthesizing coverage from multiple independent news outlets to present a balanced, unbiased account. Read about our editorial standards. Spotted an error? Let us know.