Southern Ontario is facing severe weather as powerful storms bring heavy rain, strong winds, and potential thunderstorms to the region. According to Environment Canada, parts of Toronto could see more than 50 millimetres of rain and thunderstorms, with some areas already receiving up to 25 millimetres on Monday morning. The agency notes that total rainfall amounts will likely range from 30 millimetres to 50 millimetres, though additional local amounts of 20 to 30 millimetres are possible in areas experiencing thunderstorms.
Severe Storms Drop Heavy Rain Across Southern Ontario
The stormy conditions follow weekend weather that prompted significant rainfall warnings across southern Ontario, including the Waterloo Region and Environment Canada advisories for Toronto and Mississauga. Trudy Kidd, a meteorologist with The Globe and Mail, explained that this type of weather is typical for August in southern Ontario due to a warm, humid air mass interacting with moving low pressure.
Infrastructure and Transportation Disruptions
The heavy downpours have caused significant disruptions across the Greater Toronto Area. The severe rain triggered a bypass at the Ashbridges Bay water treatment plant on Monday morning at 7:51 a.m., according to a city social media post which stated that all wastewater is disinfected and treated in accordance with strict provincial and federal regulations.
Transportation networks have also faced major impacts. According to The Globe and Mail, Toronto Pearson airport experienced flight diversions and ground delays, while leaks were reported in Terminals 1 and 3. The Greater Toronto Airports Authority noted that both terminals remained operational despite the issues. Additionally, the Toronto Transit Commission warned of multiple bus line detours due to flooding, and Peel Regional Police reported major flooding blocking Mississauga intersections at Mavis Road and Lafayette Drive, as well as Rathburn Road West and Elora Drive.
Flood Warnings and Event Cancellations
Authorities have urged residents to exercise caution. The Toronto and Region Conservation Authority issued a flood watch through the end of Sunday, warning that all shorelines, rivers, and streams within the Greater Toronto Area are dangerous due to rapidly changing water levels and unstable river banks. Environment Canada indicated that water will likely pool on roads and in low-lying areas, and additional rainfall warnings may be issued.
The severe weather also forced the cancellation of events, including the King’s Plate at Woodbine Racetrack, where attendees sought shelter under tents as heavy downpours hit the grounds, as reported by The Globe and Mail.
Tornado Confirmed in Ayr
In addition to heavy rainfall, severe storms brought strong winds and tornado activity to the region. Waterloo Regional Police reported that a tornado hit the community of Ayr, located about 20 kilometres south of Kitchener in the Township of North Dumfries. The tornado damaged the roof of a local Home Hardware store, which was subsequently evacuated. North Dumfries Fire responded to the scene due to the smell of natural gas, and Greenfield Drive was closed between Trussler Road and Northumberland Street due to fallen trees and utility poles.
David Sills, executive director of the Northern Tornadoes Project at Western University, confirmed that a tornado touched down in Ayr at around 11 a.m. Police reported no physical injuries and noted that the tornado’s path appeared small and limited to the immediate area.
