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Southern Ontario could face its most significant severe-weather threat of the summer over the next 24 hours, with thunderstorms expected to develop in several rounds beginning Tuesday evening.
Forecasters say the greatest concern will come Wednesday afternoon and evening, when conditions could become favourable for powerful thunderstorms across Southwestern and Central Ontario, including the Greater Toronto Area and Golden Horseshoe.
The developing weather system could produce supercell thunderstorms capable of generating tornadoes, large hail and damaging wind gusts.
(Richard Evans)
