Coldest temperatures in years could come to Toronto as polar vortex descends on Ontario
After a warmer-than-normal January, February is off to a frigid start in parts of Ontario.
A polar vortex is descending over Ontario this week and some of the coldest weather is still to come.
A blast of arctic air will infiltrate the lower Great Lakes area beginning Thursday night, bringing cities like Toronto their coolest temperatures of the season so far. Wind chills will also reach dangerous levels, increasing the risk of frostbite.
The coldest period of weather looks to be between Friday pre-dawn and Saturday pre-dawn. Toronto may not see temperatures climb out of the minus double digits all day, and the forecast low is expected to be into the minus twenties.
While there were several days last January where the temperature dipped into -20 C territory, the last time the temperature fell below -22 C in Toronto was Jan. 31, 2019.
It’s not just the core temperatures that are concerning. With the windchill it could feel close to -30 C at the peak of the cold spell. Those kinds of wind chills increase the risk of frostbite to exposed skin, with only 10 to 30 minutes of exposure needed in the elements.
Toronto could also to come close to breaking daily temperature records. The record low for Feb. 3 is -25 C (set back in 1955) and for Feb. 4 it is -24.4 C (set in 1946.)
On Monday, the City of Toronto issued an extreme cold weather alert. Extreme Cold Warnings issued by Environment Canada extend from the Prairies to Labrador and blanket northern Ontario.
While this cold snap in the GTA may feel extreme, it is also expected to be relatively short-lived. The temperature is forecast to be back above freezing by Sunday, and into the mid-single digits by next week.
CTVNews.ca Top Stories
Donald Trump indicted; 1st ex-president charged with crime
Donald Trump has been indicted by a Manhattan grand jury, prosecutors and defense lawyers said Thursday, making him the first former U.S. president to face a criminal charge and jolting his bid to retake the White House next year.

EXCLUSIVE | Security increased for prime minister's advisers after break-and-enter incidents
Ottawa Police are investigating an attempted break-in at the residence of Prime Minister Justin Trudeau's national security adviser, the second such incident involving one of his top aides in recent months.
'Nova Scotians' sense of safety was rocked': RCMP failures dominate inquiry's final report into 2020 mass shooting
A long list of failures by Nova Scotia RCMP leadership and policing systems dominate the final report into Nova Scotia's April 2020 mass shooting.
Meet the Canadian astronauts up for a seat on the Artemis II mission to the moon
This Sunday, NASA and the Canadian Space Agency (CSA) will announce the four astronauts that will be blasting off to fly around the moon for the Artemis II mission, one of whom will be a Canadian astronaut.
Gwyneth Paltrow not at fault for ski collision, jury decides
Gwyneth Paltrow won her court battle over a 2016 ski collision at a posh Utah ski resort after a jury decided Thursday that the movie star wasn't at fault for the crash.
Memes, ski etiquette and that missing GoPro video: Highlights from the Gwyneth Paltrow trial
When two skiers collided on a beginner run at an upscale Utah ski resort in 2016, no one could foresee that seven years later, the crash would become the subject of a closely watched celebrity trial.
Research points to common infections as cause of liver disease outbreak in kids
Scientists think they may have pinpointed the cause of a mysterious outbreak of liver disease that affected children worldwide last year.
House abandoned by couple who 'disappeared' years ago nightmare for neighbour on upscale street
A Toronto man, whose neighbours vanished eight years ago and left their home completely abandoned, said he's fed up living next door to a property that is in complete disarray.
Trump indictment: What will the arrest process look like?
Every day, hundreds of people are taken into law enforcement custody in New York City. Former President Donald Trump is expected to become one of them next week.