Environment Canada has issued a special weather statement for the area.
Snow is expected to begin tonight or early tomorrow, before becoming heavy in the afternoon.
Heavy snowfall is expected to continue into Wednesday night and taper off to flurries by Thursday morning.
Total snowfall amounts of 10 to 25 cm are possible by Thursday morning.
Poor winter driving conditions are possible.
Uncertainty remains regarding the track of the low pressure system responsible for the snow, according to Environment Canada.