Massive GTA-area crash caught on camera. See it here

Sunday, January 8, 2017, 4:33 PM - Highway 401 was closed for several hours Saturday east of Toronto, due to a collision in the Bowmanville area that the OPP says involved up to 100 vehicles.

The video above captures the moment several vehicles, including a truck, were unable to stop on the slippery highway, plowing into the cars stopped ahead of them.

Intensifying snow squalls sent visibility plunging along highways in southern Ontario, contributing to numerous accidents region-wide, though the 401 collision depicted above was the most wide-scale.

Several people were sent to hospital, all with minor injuries, the Ontario Provincial Police (OPP) said in a media release, and the highway was re-opened about nine hours later.

The collisions left numerous travellers essentially stranded on one of the largest highways in the country, with police urging people to take alternative routes.

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"Officers responded to multiple motor vehicle collisions that involved approximately 100 vehicles, including a jack-knifed and rolled-over tractor trailer," the OPP's statement read.

Parts of southern Ontario remain under a snow squall warning Sunday, with additional amounts of 10 to 15 cm possible before the squalls weaken during the afternoon.

Squalls are expected to remain west of Barrie Sunday.

Cold air has settled over southern Ontario, with some communities even issuing extreme cold alerts. Saturday evening and overnight, an Arctic front is set to move through the region, increasing chance of a few more bursts of snow with reduced visibilities.

Grinter says more Sunday squalls from the northwest are possible, with weak flurries on Monday delivering a couple of centimetres in central and eastern Ontario.

And looking ahead, forecasters continue to monitor the early-midweek in southern Ontario, with a potentially impactful system approaching from the U.S.

WATCH BELOW: Traffic on the 401 calls for a game of "hard shoulder hockey."

SOURCE: Environment Canada | CTV News