Active AlertsEssex Public School, ON

Conditions are favourable for the development of dangerous thunderstorms that may be capable of producing strong wind gusts, large hail and torrential rain.

Hazards:
Up to 90 km/h wind gusts.
Torrential downpours.
Risk of a tornado.

Timing:
Overnight.

Additional Information:
Strong thunderstorms are expected to push eastward into the region overnight. The risk for a tornado will primarily be for areas near the Michigan border.

Torrential downpours are expected. Please see the special weather statement in effect for more details.

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Local utility outages are possible.

Heavy rain can cause flash flooding and significant reductions to visibility. 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 X using #ONStorm.

For more information: https://www.ontario.ca/page/be-prepared-emergency.

When thunder roars, go indoors! Lightning kills and injures Canadians every year. Don't drive through flooded roadways.

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

Rain, heavy at times, is expected tonight.

What:
Total rainfall amounts of 30 to 50 mm. Locally higher amounts are possible in thunderstorms.

When:
Beginning tonight and ending Wednesday morning.

Additional information:
Another wave of heavy rain is expected to push into southern Ontario tonight. There remains some uncertainty regarding the total potential rainfall amounts. This next round of rain is associated with a compact low pressure system pushing into southwestern Ontario. A slight deviation in the track of this low pressure system will significantly impact where the heaviest rain sets up.

Rainfall warnings may be required for some locations tonight.

Water will likely pool on roads and in low-lying areas. Don't drive
through flooded roadways. Avoid low-lying areas.

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

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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.