Thunderstorms could be joining the heat and humidity in the Forest City for the long weekend.
Environment Canada has issued a severe thunderstorm warning and watch for London, Parkhill, Strathroy, Komoka as well as Eastern and Western Middlesex County.
The Gerrie Electric Storm Centre is tracking the conditions. Forecasters are calling for rainfall amounts up to approximately 50 mm as well as isolated funnel clouds.
The Office of the Fire Marshal and Emergency Management recommends that cover is taken immediately if threatening weather approaches.
People are asked to stay indoors to avoid dangerous conditions such as lightning strikes.
Heavy downpours can cause flash floods and water pooling on roads. Drivers are reminded that fast-moving water across a road can sweep a vehicle away.
Officials are reminding people that severe thunderstorms can produce tornadoes.
The agency stated that severe thunderstorm warnings are issued when imminent or occurring thunderstorms are likely to produce or are producing large hail, damaging winds or torrential rainfall.
Environment Canada is expecting showers to continue overnight into Monday.