Active Weather Alerts
Squall Watch
Issued: 3:20 PM Sep. 3, 2026 – Environment and Climate Change Canada
Conditions are favourable for the development of squalls with wind gusts up to 50 knots, frequent lightning, hail and poor to very poor visibility in thunderstorms heavy at times. Severe thunderstorms approaching from Michigan will move across the lake today into this evening. ### Proceed with caution as visibility may suddenly be reduced to near-zero. Large hail can damage vessels and cause injury. Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.
Yellow Watch - Severe Thunderstorm
Issued: 1:52 PM Sep. 3, 2026 – Environment and Climate Change Canada
Conditions are favourable for the development of severe thunderstorms that may be capable of producing strong wind gusts, large hail and heavy rain. Hazards: Strong wind gusts of 90 to 110 km/h Nickel to ping pong ball sized hail Torrential downpours When: This morning into this evening. ### Local utility outages are possible. Damage to roofs, fences, branches or soft shelters is possible. Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms capable of producing damaging hail, wind or rain. 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 social media using #ONStorm. For more information: https://www.ontario.ca/page/be-prepared-emergency.
Yellow Warning - Heat
Issued: 12:12 PM Sep. 3, 2026 – Environment and Climate Change Canada
Humidex values reaching 40 are expected for the next day. A heat event continues. What: Maximum temperatures of 30 to 32 degrees Celsius. Minimum temperatures of 20 to 23 degrees Celsius. Maximum humidex values near 40. When: Ending tonight. ### Heat warnings are issued when very high temperature or humidity conditions are expected to pose an elevated risk of heat illnesses, such as heat stroke or heat exhaustion. For more information: https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/how-protect-yourself.html https://www.canada.ca/en/health-canada/services/climate-change-health/extreme-heat/who-is-at-risk.html 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 social media using #ONStorm.
Local Radar