Southern Ontario: Thunderstorm Outlook for Thursday, August 26, 2021

Forecast Discussion

Isolated pop-up storms are possible in parts of Southern Ontario during the afternoon and evening on Thursday. The areas most likely to see the storm activity includes London, Hamilton, Niagara and Kingston/Brockville. These storms should remain non-severe for the most part, however, severe thunderstorm warnings may be necessary from Environment Canada due to the potential for some heavy rainfall. Regardless, the storms will be quite weak so flooding will be the biggest threat along with strong wind gusts and small hail. The risk will come to an end late in the evening.