Environment Canada says the storm is expected to begin Saturday afternoon and continue into Sunday afternoon. 

Environment Canada issues a winter storm warning for the far southwestern corner of Saskatchewan, with up to 25 centimetres of snow expected.

Central and southern Alberta are set to be hit with an extended snowfall Thursday, after morning snow led to poor road conditions across large sections of the province.

Global Edmonton meteorologist Jesse Beyer said weather in some areas would "bring heavy precipitation and gusty wind to many, affecting travel plans."

Environment Canada says between 20 to 30 centimetres of snow may fall from Wednesday to midday Thursday.

Upwards of 70 centimetres of snow could fall in parts of Banff and Jasper national parks this weekend.

A travel advisory for limited visibility due to snow is in effect for the Trans-Canada Highway, between Sicamous and Revelstoke.

National weather service predicts up to 30 cm could fall on Highway 3 between Paulson Summit to Kootenay Pass.

15 to 25 centimetres of snow is in the weather forecast for the Central and North Okanagan.

Motorists are being advised to consider alternate travel plans until conditions improve.