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Flooding possible as severe storms target Ontario on Friday – The Weather Network

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Flooding possible as severe storms target Ontario on Friday – The Weather Network

Published on Jun. 21, 2024, 12:54 AM

Remain alert for watches and warnings on Friday as another round of strong to severe storms targets portions of southern Ontario

The first official day of summer arrived in style across southern Ontario as some vivacious thunderstorms roared over the region on Thursday.

Lingering heat and humidity will drive additional opportunities for thunderstorms on Friday and again to start the weekend on Saturday. Watch out for lightning, heavy rain, and gusty winds in any of the feistier cells that bubble up.

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Severe storms possible Friday

A muggy and unsettled stretch of weather continues over southern Ontario as we head into Friday. Even though the worst of the heat is waning, we’ll see enough instability with daytime heating and lingering humidity to trigger another round of widespread thunderstorms across the region.

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Given the dynamics in place, we could see some thunderstorms meet severe criteria across southwestern Ontario and the Greater Toronto Area. The strongest storms could produce torrential rains and locally gusty winds.

Friday severe risk

Some storms will be capable of dropping 50 mm of rain in just a couple of hours. This could lead to localized ponding on roadways beneath any slower-moving cells. Flash flooding is possible in urban areas.

Saturday sees a renewed storm risk

We’re watching the progress of a low-pressure system moving toward Ontario for the beginning of the weekend.

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