The national weather agency says 15 to 20 centimetres of snowfall is expected by Wednesday, but as much as 30 centimetres is possible.

A weather system stalled in the Edmonton area, which dumped heavy snow across the region on Wednesday.

Bad winter weather is making it difficult for vehicles to get across the William Bennett bridge, police say.

Forecasters had said the worst of the weather would target areas north of London and closer to Lake Huron.

The B.C. coast is expecting another major low pressure system Thursday, bringing with a chance of snow across the entire province.

Freezing rain is also in the forecast for parts of B.C.'s interior.

On Sunday, a powerful low pressure system swept across the prairies, bringing a variety of weather with it.

Winds gusting to 50 kph are expected to blow the snow around, making for treacherous driving conditions.

Heavy snow and reduced visibility on the road are forcing some schools in New Brunswick to close early for the day.

A special weather statement has been issued for the Barrie, Orillia, Midland and Collingwood areas.