After a relatively warm week, some areas of southern Ontario will see severe weather on Monday with up to 40 centimetres of snow possible in areas near London.
Environment Canada has issued snow squall warnings for Barrie, Parry Sound, Muskoka and the Bruce Peninsula.
The forecast for those area calls for snow squalls with heavy blowing snow in accumulations of up to 15 centimetres.
Environment Canada says drivers should leave extra time for trips and expect reduced visibility in those areas.
CBC meteorologist Johanna Wagstaffe said a snow squall watch is also in effect for the London and Woodstock area and into Sarnia.
The snow squalls are created when cold, Arctic air sweeps over unseasonably warm Great Lake waters. As the afternoon approaches, the winds will swing south.
"This morning it will be the Orilla-Barrie area that will see zero visibility and 15 centimetres of snow and this afternoon those snow squalls will sink down to London and sit there for the next couple of days," she said. “Parts of London and Stratford County could see 40 centimetres by the end of Tuesday."
“We could even see a few flurries down into Toronto as they reach down through Lake Ontario.”
“By [Tuesday] afternoon, 40 centimetres is not out of the question if you get stuck in one of these snow squall bands.”
Toronto temperatures to drop
Toronto will likely escape with only a light dusting of snow but the forecast is calling for temperatures to fall to -4 C by Monday afternoon.
"It will feel like a shock for Toronto," said Wagstaffe. "We had 7 C on Sunday, it's going to -1 C this morning and dropping to -4 C this afternoon. We're missing the worst of the Ontario weather."
The temperature will continue to drop overnight and into Tuesday, when a high of –11 C is forecast for Toronto.
Environment Canada has issued snow squall warnings for Barrie, Parry Sound, Muskoka and the Bruce Peninsula.
The forecast for those area calls for snow squalls with heavy blowing snow in accumulations of up to 15 centimetres.
Environment Canada says drivers should leave extra time for trips and expect reduced visibility in those areas.
CBC meteorologist Johanna Wagstaffe said a snow squall watch is also in effect for the London and Woodstock area and into Sarnia.
The snow squalls are created when cold, Arctic air sweeps over unseasonably warm Great Lake waters. As the afternoon approaches, the winds will swing south.
"This morning it will be the Orilla-Barrie area that will see zero visibility and 15 centimetres of snow and this afternoon those snow squalls will sink down to London and sit there for the next couple of days," she said. “Parts of London and Stratford County could see 40 centimetres by the end of Tuesday."
“We could even see a few flurries down into Toronto as they reach down through Lake Ontario.”
“By [Tuesday] afternoon, 40 centimetres is not out of the question if you get stuck in one of these snow squall bands.”
Toronto temperatures to drop
Toronto will likely escape with only a light dusting of snow but the forecast is calling for temperatures to fall to -4 C by Monday afternoon.
"It will feel like a shock for Toronto," said Wagstaffe. "We had 7 C on Sunday, it's going to -1 C this morning and dropping to -4 C this afternoon. We're missing the worst of the Ontario weather."
The temperature will continue to drop overnight and into Tuesday, when a high of –11 C is forecast for Toronto.