For the second day in a row, Environment Canada has issued a severe thunderstorm watch for southwestern Ontario.
The national weather service says conditions are favourable for the development of severe thunderstorms, strong wind gusts, large hail, and heavy rain.
The yellow-level watch has been issued for area including Lambton, Huron, and Perth Counties, as well as parts of Grey and Wellington Counties.
Thunderstorms are expected to develop late afternoon and into the evening.
Emergency Management Ontario recommends that you take cover immediately if threatening weather approaches.