Blinding squalls continue to hammer the region
Blinding whiteouts are wreaking havoc on area roads.
What was once isolated snow squall warnings have now covered the entire region.
Fifteen to 25 centimetres are expected to hammer south-central Ontario through this evening, according to Environment Canada.
Even once the snow stops, the weather agency says winds will be gusting up to 70 km/h, which can cause zero visibility.
Traffic has been snarled throughout the region.
Extreme cold warnings remain in effect throughout much of the province. Those are expected to remain through Saturday when some reprieve from the deep cold is expected.
Earlier Friday, more than a dozen vehicles were involved in a pileup in the southbound lanes of Highway 400 at Mapleview Drive.
Huronia West OPP has many local roads closed, including Highway 26 from Horseshoe Valley Road through Stayner.
Clearview township has cancelled Winterama events for Friday night.
CTVNews.ca Top Stories

BREAKING India suspends visa services in Canada and rift widens between countries
India's visa processing centre in Canada suspended services Thursday as a rift widened between the countries after Canada's leader said India may have been involved in the killing of a Canadian citizen.
Russia strikes cities from east to west Ukraine, starting fires and killing at least 2
Russian missiles pounded cities across Ukraine early Thursday morning, according to authorities, sparking fires, killing at least two people and trapping others under rubble, and Ukrainian ally Poland said it would stop providing weapons amid a trade dispute.
Canada showcases tragic wildfire season to promote carbon pricing initiative at UN
The federal government is hoping Canada's devastating wildfire season sparks momentum for carbon pricing at the United Nations.
Cross-country rallies against 'gender ideology' in schools meet with counter-protests
Thousands of people gathered in cities across Canada on Wednesday for competing protests, screaming and chanting at each other about school policies on gender identity.
From Centre Ice Conservatives to Canadian Future, a new federal party takes shape
The interim leader of Canada's newest federal party says he wants it to be an option for people who are tired of both the governing Liberals and the "rage farming" coming from the Conservatives.
Immediately stop using these child safety seats: Health Canada
Health Canada has issued a safety advisory asking Canadians to immediately stop using certain child safety seats due to injury risks.
Amid rising rent prices, these are the apartments currently on the market
As average rent prices in Canada hit record highs, experts say it's going to take more than just interest rate hikes to cool the red-hot market, including a crucial boost in supply.
Cutting obituary for B.C. man thanks karma for 'doing what she does best'
Few obituaries begin with the words, "I am pleased to announce" – but Amanda Denis believes in blunt honesty.
Emergency manager to take the stand for third day at 'Freedom Convoy' trial
Ottawa's emergency services manager is expected to take the stand for a third day in the criminal trial of two 'Freedom Convoy' organizers.