ABOVE: Snow squalls create havoc for drivers on Hwy 400. Mark Carcasole reports.
TORONTO – Though few flurries have fallen on the GTA, north and west of the city, it’s a different story.
Snow squall warnings and watches were in effect for Barrie, Orillia, Midland, Huron, London and surrounding areas on Tuesday afternoon.
The snow caused traffic headaches for motorists along Hwy. 400. OPP reported several accidents as snow continued to fall, reducing visibility and making roads slippery.
The snow squalls are caused by lake effect snow, which occurs as cold winds pass over warmer water. In this case, the surface temperature of Lake Huron – including Georgian Bay – is around 10 C. But the air temperature is about -3 C. The winds pick up moisture, forming clouds and then precipitation.
Environment Canada has reported about 15 cm in Alliston as of 4 a.m. Another 10 to 15 are possible in the area.
Comments