Highway 11 is shut down in the Orillia area after multiple crashes on the snow-covered roadway.
Orillia OPP says the southbound lanes between Coldwater Road and Line 15 are closed due to a collision.
Firefighters and paramedics have also been dispatched.
There are reports on social media that up to 50 vehicles may be involved and that there are multiple crashes that have occurred along that stretch of highway.
An intense snow squall has been hovering over the Orillia area for a few hours, creating whiteout conditions.
Police are asking people to avoid any unnecessary travel.
The highway is expected to be closed for some time.
At the Scene Hwy 11 SB Old Barrie Rd to Line 15 MVCs possibility of upto 50 vehicles involved Orillia Fire has requested Mutual Aid from Oro-Medonte Fire
— At the Scene Photography (@AtTheScenePhoto) February 7, 2025
Multiple transports, some serious injuries through the carnage
Avoid the area @401_da_sarpanch#AtTheScene #Orillia #MVC pic.twitter.com/AAbd0uJ4F8