Snow squalls made their presence felt over southern Ontario on Wednesday, leaving periodic whiteout conditions on the ground below.

Several highways around midwestern Ontario were closed at different parts of the day.

As of 6 p.m., the list included Highway 9 between Kincardine and Harriston, Highway 8 between Mitchell and Seaforth, Highway 21 between Southampton and Amberley, and Highway 23 between Mitchell and Highway 7.

Highway 6 was also closed between Arthur and Mount Forest – although that closure came too late for the drivers involved in a four-vehicle crash near Side Road 8 around 2:45 p.m.

No serious injuries were reported in that collision.

North of Orangeville, three people were taken to hospital with non-life-threatening injuries following a collision that involved at least 18 vehicles.

As of 4:45 p.m., Grey-Bruce and Huron County were under a snow squall warning, with Environment Canada forecasting that localized areas could see 10 to 15 cm of snowfall by Wednesday evening.

A blowing snow advisory was in place for Waterloo-Wellington and Perth County, with periods of low visibilities expected to continue into Wednesday evening and possibly into Thursday morning.

By Thursday afternoon, winds were expected to die down slightly, with temperatures in Waterloo Region hovering around -9 C.

With reporting by Victoria Levy