Ontario: Torrential rain, hail and strong winds with severe thunderstorms

Daniel Martins
Ontario: Torrential rain, hail and strong winds with severe thunderstorms

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Some in southern Ontario will be woken up by rumbles of thunder on Wednesday morning. The thunderstorms will track through Windsor and London towards the GTA and have the potential to bring heavy rainfall. Conditions will become more moderate in the afternoon and most of the region will see temperatures within a few degrees of seasonal. Details and timing, below.

WEATHER HIGHLIGHTS:

  • Heavy rain may impact London-Windsor area early Wednesday morning
  • Temperatures in the mid-to-high 20s until Friday, except in the east
  • Cooler again for the weekend
  • Keep on top of active weather ALERTS here.

WEDNESDAY: HEAVY RAIN POSSIBLE WITH THUNDERSTORMS

A cluster of rain and thunderstorms will move into the southwest along an approaching cold front.

"Within this cluster of thunderstorms, heavy rain, frequent lightning, strong-to-damaging wind gusts and hail are possible," Weather Network meteorologist Kelly Sonnenburg says. "Rain and thunderstorms will continue into the morning hours of Wednesday from Windsor to parts of the western GTA."

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Regions east of Toronto will see temperatures that are a couple degrees away from seasonal while Hamilton, London and Windsor will see temperatures in the high 20s or near 30°C.

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BEYOND: LATE-WEEK STORM RISK, WEEKEND COOLDOWN

Thursday features something of a break from the storms, but a cold front tracking through the region Friday night will bring the risk back once again. The flipside: the cold front will also send temperatures sliding for the weekend, with lower humidity.

"A cool start to next week, but we are watching the potential for a couple days of very warm to hot weather mid and late next week," Weather Network meteorologist Dr. Doug Gillham says.

Check back as we continue to monitor the forecast.