Environment Canada has issued a severe thunderstorm watch for Greater Montreal as of June 10, 2026. The watch is in effect for the Montreal metropolitan area, including Laval and the South Shore. Meteorologists warn of the potential for strong wind gusts, heavy rainfall, and hail. Residents are advised to monitor weather conditions and take precautions, such as securing outdoor objects and avoiding water-related activities.
Weather Conditions and Timing
The watch comes as a low-pressure system moves across southern Quebec, bringing unstable air masses. Showers and thunderstorms are expected to develop by late morning and persist into the afternoon. Some storms may become severe, with wind gusts up to 90 km/h and rainfall amounts of 30 to 50 mm in a short period. Localized flooding and power outages are possible.
Precautionary Measures
Environment Canada recommends that residents stay indoors during thunderstorms, avoid using electrical appliances, and refrain from taking shelter under trees. Drivers should reduce speed and avoid flooded roads. The watch will remain in effect until further notice, with updates provided as conditions evolve.
Broader Weather Impact
In addition to the thunderstorm threat, the region will experience cloudy and breezy conditions with occasional showers. Temperatures are expected to reach a high of 22°C. The unstable weather pattern is forecast to continue into the evening, with a gradual improvement by Tuesday.
This weather event follows a period of unsettled conditions across Quebec, with previous storms causing localized damage. Authorities remind the public to stay informed through official channels and to report any emergencies to local services.
