Thunderstorms, heavy rain, and strong winds heading to Southern Ontario

Starting tonight, a low pressure system will move across southern Ontario, bringing thunderstorms, heavy rain, and strong winds.

Most of the region will see rainfall amounts of 20 to 40 mm; however, in thunderstorms, rainfall amounts of 60 mm could fall.

Overnight into Thursday, winds along the shores of Lake Erie will gust to 90 km/h; by tomorrow afternoon, winds will diminish to 70 km/h. Elsewhere across southern Ontario, winds will gust to 70 km/h or 80 km/h.

Southern areas of Quebec will also be impacted by this low, with rainfall amounts of 30 to 50 mm expected.

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Forecast confidence:

Medium

Impact scale:

Moderate