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Heat wave gripping much of Ontario, Quebec tracks east to Maritime provinces
Environment Canada has scores of warnings as temperatures reach the mid-30s and humidex values near 45 C, while storms cut power to 168,000 customers.
Environment Canada issued heat warnings across five provinces and one territory on Canada Day as daytime temperatures reached 30 to 35 C, with humidex values near 45 across Alberta to Atlantic Canada.
Severe thunderstorms accompanied the heat wave, causing widespread power outages across Ontario and Quebec; Hydro One reported 168,000 customers in the dark at peak impact.
Storms in the National Capital Region forced cancellation of Canada Day celebrations, while Toronto cancelled Thursday's FIFA World Cup match broadcasts at Nathan Phillips Square due to extreme heat.
As of Wednesday, roughly 110 millimetres of rain had fallen at the Ottawa Airport, while officials urged Canadians to call 911 if experiencing heat stroke symptoms like dizziness or confusion.
The stifling heat continues into the weekend across parts of the country, with New Brunswick cities including Fredericton, Edmundston, Oromocto, and Woodstock facing prolonged temperatures into Friday.