Thunderstorm watches and warnings in effect throughout the region

CTV News

09-07-2025

A severe thunderstorm watch is in place for Perth County, and a severe thunderstorm warning is issued for southern Grey County and Dufferin County.
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A severe thunderstorm watch is in place for Perth County, and a severe thunderstorm warning is issued for southern Grey County and Dufferin County.
'The storms have been moving through heavy downpours, intense lightning and nickel sized hail associated with them,' said CTV London's meteorologist Julie Atchison. 'The storm is extremely intense.'
Near 6 p.m., London will have a 60 per cent chance of thunderstorms, but most of the activity is expected to wind down.
The humidity remains in place, with temperatures feeling like 30 to 33. Patchy fog will hover in areas around Goderich and Grand Bend tonight.
Thursday's weather begins with sun and a 30 per cent chance of thunderstorms developing in the afternoon.
Here's a look at the rest of the forecast
Wednesday night: Mainly cloudy. 60 per cent chance of showers this evening with risk of a thunderstorm. Low 18.
Thursday: Becoming a mix of sun and cloud in the morning. 30 per cent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. High 28. Humidex 34. UV index 9 or very high.
Friday: A mix of sun and cloud with 30 per cent chance of showers. High 29.
Saturday: A mix of sun and cloud with 40 per cent chance of showers. High 31.
Sunday: A mix of sun and cloud with 40 per cent chance of showers. High 28.
Monday: A mix of sun and cloud with 30 per cent chance of showers. High 29.