Montreal is under another severe thunderstorm watch as of June 21, 2026, just one day after major flash flooding inundated basements, streets, and a grocery store on the city's West Island.
Flash Flooding on June 20
On June 20, 2026, intense rainfall caused significant flash flooding across Montreal's West Island. Basements were flooded, streets became impassable, and a local grocery store suffered water damage. Emergency crews responded to numerous calls for assistance.
Severe Thunderstorm Watch Issued
Environment Canada issued a severe thunderstorm watch for Montreal on the morning of June 21, warning of the potential for strong winds, heavy rain, and hail. The watch covers the entire island and surrounding areas. Residents are advised to stay indoors and avoid driving through flooded roads.
Impact and Response
The flash flooding on Saturday caused disruptions to traffic and public transit. Many residents reported water entering their homes, and cleanup efforts are underway. The city has urged residents to report flooding and to take precautions to protect property.
