According to BBC News, the city experienced nearly 100 millimeters of rain, breaking the single-day rainfall record set in 1941. Meteorologists said the heavy rain was caused by three consecutive storms that hit the city.
Caused by heavy rain flood The fire broke out along portions of Don Valley Boulevard and Lake Shore Drive along Lake Ontario.

The Toronto and Region Conservation Authority declared shorelines, rivers and streams “dangerous”. The Toronto Fire Department has rescued 14 people who were trapped in or on top of their cars on flooded highways, Deputy Fire Chief Jim Jessop told reporters.
In addition to flooding, the city also experienced power failure. Key locations such as Union Station, the main transport terminal and the shops within it, as well as parts of the underground path network connecting to the station, are closed due to flooding and power outages.
The Toronto Transit Commission reports that many buses and streetcars are being forced to detour their regular routes across the city, while subway trains are not stopping at affected stations.
Toronto Hydro said about 167,000 customers were without power and multiple flights were canceled or delayed at Billy Bishop Airport on the Toronto Islands in Lake Ontario, according to the BBC.