Yellow Watch – Severe Thunderstorm Watch For Our Region

Brockville – Environment Canada has issued a Yellow Watch – Severe Thunderstorm for Brockville, Prescott, Gananoque, Mallorytown, Merrickville-Wolford, Kemptville, Westport, Charleston Lake, Smiths Falls and East Lanark County.

12:09 PM EDT Saturday 6 June 2026

• Impact Level: Moderate
• Forecast Confidence: High

Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts and heavy rain.

Hazards:

• Wind gusts of 90 km/h
• Local rainfall amounts in excess of 50 mm

Timing:

• This afternoon into this evening.

Additional information:

Scattered thunderstorms are expected, which have the potential to produce wind gusts of 90 km/h and small hail. Multiple rounds of thunderstorms are possible for some areas, which may give rainfall totals approaching 50 mm as well.

When thunder roars, go indoors! Lightning kills and injures Canadians every year.

Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.

Heavy rain can cause flash flooding and significant reductions to visibility. Strong wind gusts can damage trees, buildings and overturn vehicles.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.