Heavy rainfall on June 21, 2026, caused flash flooding in Montreal, particularly in the borough of Dollard-des-Ormeaux. Furniture and household belongings were seen strewn on streets as water overwhelmed drainage systems. The event left thousands without power and prompted emergency responses across the city.
Extent of the Flooding
Photographs from the scene show mattresses, chairs, and other items piled on roads after being swept from homes. The Canadian Press captured images of the aftermath on Sunday, June 21, as residents began assessing damage. The West Island area faced the brunt of the flooding, with many basements inundated.
Power Outages and Ongoing Risks
As of Sunday afternoon, thousands of households remained without electricity. Utility crews worked to restore power, but more heavy rain and thunderstorms were forecast for Greater Montreal later in the day. Officials warned residents to avoid driving through flooded streets and to stay clear of downed power lines.
What Residents Should Do
Authorities advised affected residents to contact their insurance providers, document damage with photos, and avoid contact with floodwater due to potential contamination. Sandbags were distributed in some areas, and temporary shelters were opened for those displaced. The city urged people to report blocked drains and to check on vulnerable neighbors.
Broader Context
The flash flood comes amid a series of extreme weather events across Canada, including wildfires in British Columbia and heat warnings in other provinces. Climate experts have linked increased rainfall intensity to warming temperatures, raising concerns about infrastructure resilience.
