Heat warning continues for parts of the GTA: Environment Canada

After a scorching Victoria Day, the Greater Toronto Area’s first heat event of the year is expected to continue baking the city through Tuesday.

Environment Canada issued a yellow heat warning Monday for Toronto, Vaughan, Richmond Hill, Markham, Mississauga and Brampton, Ont. The warning took effect Monday afternoon, and is set to end Tuesday night.

Daytime highs will reach 30 C, which will feel like nearly 36 C, according to the the weather agency. Overnight lows will sit between 18 and 20 C.

The weather agency is also forecasting a risk of thunder showers for Toronto later in the afternoon and evening Tuesday.

Environment Canada meteorologist Kristina Kretchman says the sudden shift to hot weather may feel “dramatic” because of recent below-normal temperatures, but a hot spell at this time of year isn’t particularly unusual.

Kretchman says a warm air mass from the U.S. is moving up into Ontario, bringing extra heat and moisture.

In its warning, Environment Canada recommends watching for signs of heat exhaustion and heat stroke, including headaches, nausea, dizziness, confusion and intense fatigue.

The weather agency is reminding residents to remain hydrated, close blinds, open windows, turn on air conditioners and limit direct exposure to the sun and heat.

In a news release Sunday afternoon, the City of Toronto said it has activated its heat relief strategy.

The city said there are more than 380 park water fountains and 247 park washrooms open across Toronto. There will also be four additional mobile water trailers at Nathan Philips Square, Mel Lastman Square, East York Civic Centre and Etobicoke Civic Centre by 12 p.m. on Monday.

According to the city, 168 splash pads across Toronto will be available from dawn until dusk while the heat warning is in effect. The city is also making 112 additional shelter spaces available by 12 p.m. Monday.