Sarnia, Ontario, Canada Severe Weather Alertstar_ratehome

Heavy rain in thunderstorms continues.

What:
Local rainfall amounts exceeding 50 mm.

When:
Continuing this afternoon.

Additional information:
Heavy showers and thunderstorms will continue to move through the area today.

For information concerning flooding, please consult your local Conservation Authority or Ontario Ministry of Natural Resources office. Visit Ontario.ca/floods for the latest details.

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Heavy downpours can cause flash floods and water pooling on roads. Localized flooding in low-lying areas is possible. Heavy rainfall in combination with other weather factors, such as hail, wind and lightning will make outdoor activities unsafe.

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.

A prolonged period of hot and humidity continues.

What:
Daytime highs of 31 to 34 degrees Celsius and a humidex of 37 to 42.
Overnight lows of 19 to 21 degrees Celsius, providing little relief from the heat.

When:
Continuing through Thursday.

Additional information:
Showers and thunderstorms moving through Thursday morning are expected to keep daytime temperatures relatively cooler for most regions, bringing an end to the heat event. For regions not affected by showers, a cooler airmass will bring an end to the event by Thursday night.

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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 X using #ONStorm.