Environment Canada has ended a severe thunderstorm watch for London-Middlesex, Chatham-Kent and Windsor-Essex.
Isolated thunderstorms were expected to develop Wednesday afternoon and be capable of producing up to 50 mm of rain.
Heavy downpours can cause flash floods and water pooling on roads.
Severe thunderstorm watches are issued when conditions are favourable for the development of thunderstorms that could produce one or more of the following: large hail, damaging winds, and torrential rainfall.
The Office of the Fire Marshal and Emergency Management recommends that you take cover immediately if threatening weather approaches.
