Most of southern Ontario, parts of northern Ontario under extreme cold warning
A large swath of Ontario was under an extreme cold warning on Friday as a polar air mass with biting wind chills made its way across the province.
Environment Canada warned of wind chill values between -30 C and -40 C across much of southern and eastern Ontario, and up to -50 C in parts of northern Ontario.
The federal weather agency said the cold could cause frostbite to develop on exposed skin within minutes.
Meteorologist Steven Flisfeder said the extreme cold conditions across the province were expected to continue into Saturday.
"Tundra is a pretty good word to bring into this," said Flisfeder. "We saw very cold temperatures across northern Ontario through the week and that air mass has finally made its way towards southern Ontario."
Temperatures were expected to plunge overnight Friday, he said.
"We won't see a real warm up until later in the day Saturday," said Flisfeder. "By the time we get to early next work week, we'll have temperatures above seasonal once again."
Environment Canada said wind chill could approach -30 C in the Greater Toronto Area on Friday, while in Ottawa it could feel closer to -40 C.
In Thunder Bay, Environment Canada said said it would feel more like -45 C and the regions around Hudson Bay were forecast to feel wind chills around -50 C.
In addition to the extreme cold alerts, Environment Canada issued snow squall warnings for Grey-Bruce and Huron-Perth in southern Ontario, with snowfall up to 25 centimetres through Friday evening.
"Just grit our teeth, dress in layers, limit our time outdoors as much as possible and make sure we cover up as much skin as possible to protect from frostbite," said Flisfeder.
City of Toronto data indicated its warming centres were at 98 per cent capacity on Thursday.
It said there was still space in its overnight shelter system Friday morning.
The city said it had directed staff not to turn anyone away from shelters or warming centres during the extreme cold.
The extreme cold snap led Environment Canada to issue similar cold warnings in Manitoba, through to Quebec and the Maritimes.
This report by The Canadian Press was first published Feb. 3, 2023.
CTVNews.ca Top Stories
Risk of a hard landing for Canadian economy is up, former Bank of Canada governor says
Former Bank of Canada governor Stephen Poloz says Canada’s economy is at a greater risk of a 'hard landing' — a rapid economic slowdown following a period of growth and approaching a recession.

'Horrible, horrible deals': Trump criticizes Biden's visit to Canada
Former U.S. president Donald Trump shared his disdain for Joe Biden's visit to Canada, saying Prime Minister Justin Trudeau treats the U.S. ‘horribly’ on trade issues.
Putin says Russia will station tactical nukes in Belarus
Russian President Vladimir Putin announced plans on Saturday to station tactical nuclear weapons in neighboring Belarus, a warning to the West as it steps up military support for Ukraine.
'There's nothing left': Deep South tornadoes kill 26
Rescuers raced Saturday to search for survivors and help hundreds of people left homeless after a powerful tornado cut a devastating path through Mississippi, killing at least 25 people, injuring dozens, and flattening entire blocks as it carved a path of destruction for more than an hour. One person was killed in Alabama.
Officials: 2 dead, 5 missing in chocolate factory explosion
An explosion at a chocolate factory in Pennsylvania on Friday killed two people and left five people missing, authorities said. One person was pulled from the rubble overnight.
Trump, facing potential indictment, holds defiant Waco rally
Facing a potential indictment, Donald Trump took a defiant stance at a rally Saturday in Waco, disparaging the prosecutors investigating him and predicting his vindication as he rallied supporters in a city made famous by deadly resistance against law enforcement.
Canadians view own country favourably but many unsure about Canada's system of government: survey
A recent study by the Angus Reid Institute found Canadians view their country more positively than Americans do, but only a slight majority of people in Canada believe their system of government is good.
Declining suicide rates in Europe may be linked to increased preventative initiatives: report
Within the last decade the total suicide rate among European nations have decreased, according to a new report that says increased suicide prevention initiatives may have helped bring down this death rate.
Russia 'largely stalled' in Bakhmut, shifting focus, U.K. says
The top commander of Ukraine's military said Saturday that his forces were pushing back against Russian troops in the long and grinding battle for the town of Bakhmut, and British military intelligence says Russia appears to be moving to a defensive strategy in eastern Ukraine.
W5 HIGHLIGHTS
W5 | Comedian Russell Peters doesn't pull punches in climate of 'cancel culture,' 'political correctness'
CTV W5 speaks with members of the comedy industry, including Russell Peters, for a wide-ranging look at how political correctness and 'cancel culture' has changed the world of stand-up comedy.

W5 Investigates | 'Canadians should be very concerned about their drinking water': W5 investigates asbestos cement pipes
W5 investigates aging asbestos pipes across Canada and the potential health hazards if it ends up in your tap water. Watch W5's 'Something in the Water' Saturday at 7 p.m. on CTV.

W5 EXCLUSIVE | New police force should be appointed to take over investigation into death of teenaged hockey player, complaint says
An Ontario couple has filed a request with the Office of the Independent Police Review Director (OIPRD) to appoint a new police force to investigate the death of their 17-year-old son Benjamin, who died during a hockey team-bonding event in September 2019.

W5 Investigates | How did a healthy teen die at a minor hockey camp?
The parents of young Ontario hockey player Ben Teague have been searching for answers since he died while at a team retreat in 2019. The mystery about what happened and the code of silence in hockey culture is explored in CTV W5's 'What Happened to Ben,' on CTVNews.ca and W5's official YouTube channel.
W5 | Parents of young player who died struggle to find answers within hockey's code of silence
The parents of young Ontario hockey player Ben Teague have been searching for answers since he died while at a team retreat in 2019. The mystery about what happened and the code of silence in hockey culture is explored in 'What Happened to Ben' on CTV W5.
W5 | 'So disturbing': Pivot Airlines crew shocked RCMP aware of possible cocaine shipment prior to Dominican bust
The RCMP knew about a potential cocaine shipment from the Dominican Republic to Toronto aboard a Canadian charter flight but inexplicably allowed the crew that discovered and reported the drugs to be detained for months without intervening, a W5 investigation has revealed.
W5 Investigates | Pivot Airlines crew seeking justice after 'cocaine cargo' detainment
CTV W5 investigates what authorities knew about plans to smuggle cocaine out of the Dominican Republic on a Toronto-bound Pivot Airlines flight. The airline's crew is demanding justice following their eight-month detention.
W5 | Divorcing Canadian couples spending thousands on pet custody court battles
Pet custody cases are on the rise in Canada as judges decide who gets the dog or cat after a divorce.