Southern Ontario is facing a strong storm threat that includes damaging winds and a slight risk of tornadoes. The region is bracing for severe weather conditions that could potentially cause significant damage. People are being urged to stay alert and take necessary precautions to ensure their safety. The main concern is the potential for strong winds, which can bring down trees and power lines, leading to power outages. Additionally, there is a slight risk of tornadoes, which could further escalate the danger. Residents in the affected areas are advised to stay informed about the changing weather conditions..
Digital WritersThe Weather Network
Updated on Aug. 24, 2023, 4:34 PM
Humidity will creep into southern Ontario Thursday as parts of the region endure another round of heavy rainfall, thunderstorms and a localized flood threat. There’s also the slight risk of a tornado
After 75-150+ mm of rain flooded sections of southwestern Ontario on Wednesday, concerns are growing for additional flooding, as rounds of rain and storm chances are still to come on Thursday. Forecasters are also watching for the potential for tornadoes across the southwest as the evening hours wear on.
Wednesday’s flooded streets in Tilbury were thanks to a setup known as training thunderstorms. This means one rainy storm is followed by another, and another. Over 140 mm of rain was recorded in the region by Wednesday night.
Localized flooding in Tilbury, Ont., on Aug. 23, 2023. (Mark Robinson/The Weather Network)
Several road closures have been reported as a result of the flash flooding, including Highway 402 west of Strathroy, in what’s being called a ‘1 in 100 year’ rainfall event.
As well, an intense lightning show lit up the skies over Lake Erie late Wednesday, with over 23,000 strikes recorded in just 15 minutes at one time.
In addition to Thursday’s storm threat, a drastically different air mass will spread over parts of Ontario, with a near 20-degree difference in the humidex from Toronto to Windsor through the afternoon.
Southern Ontario is set to experience heavy rainfall, thunderstorms, and a localized flood threat on Thursday. This comes after parts of the region were already flooded on Wednesday with 75-150+ mm of rain. There is also a slight risk of tornadoes. The flooding is caused by a phenomenon known as training thunderstorms, where one storm is followed by another and another. The intense rainfall has led to road closures, including on Highway 402. There was also an intense lightning show over Lake Erie on Wednesday. Additionally, there will be a significant change in the air mass with a 20-degree difference in the humidex from Toronto to Windsor.
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