Heat warning ends for Toronto, parts of York and Peel Region
Posted June 29, 2021 11:43 am.
Last Updated June 30, 2021 6:15 am.
A heat warning has ended for Toronto and Hamilton, along with York-Durham, Halton-Peel, and Niagara Regions, but that doesn’t mean the warm weather is over.
Wednesday is still expected to be muggy with a high of 28 C, with a humidex near 35. There’s a chance of isolated showers or thunderstorms but nothing like the GTA experienced Tuesday.
Heat, rain, and thunderstorm warnings were issued by Environment Canada for parts of the GTA on Tuesday. Temperatures climbed to around 31 C with a humidex near 40 during the height of the day.
While there was some relief from the heat overnight with temperatures hovering around 21 C, the humidity still made it feel closer to 30 C.
The severe thunderstorm warning for Tuesday evening ended around 7 p.m. and severe thunderstorm watches that were in place throughout the evening expired later in the night.
Rainfall warnings that were in effect throughout the day also expired by nightfall.
Rainfall amounts of 25 millimetres were reported in some areas and thunderstorms prompted major flooding on some driving routes. There were delays on the eastbound Highway 401, east of Mississauga, due to a collision, and all lanes were closed eastbound on the 401 in Oshawa for a short period.
Flooding can be common in low-lying areas, such as the DVP and Dundas and along the lake shore.
The Toronto and Region Conservation Authority (TRCA) also issued a flood outlook, saying “all rivers within the GTA may experience higher flows and water levels, resulting in hazardous conditions” due to heavy rainfall.
RELATED: Western Canada heat wave has unusual characteristic of high nighttime temperatures
The TRCA warned that rising water levels and slippery or unstable banks could create hazardous conditions near any river, stream or other water bodies. Flooding and ponding could also occur in low-lying areas or areas with poor drainage.
Toronto Pearson airport said thunderstorms and lightning may impact operations and cause delays.
Thunderstorms and lightning in the airport area may impact operations at Pearson, potentially causing delays. Passengers are recommended to check their flight time and status with their airline before leaving for the airport.
— Toronto Pearson (@TorontoPearson) June 29, 2021
