Environment Canada has issued a Special Weather Statement warning of the possibility of a "significant freezing rain event" in the Montreal area beginning Thursday night.
The affected areas include Montreal, Laval, Longueuil and Châteauguay.
The agency meteorologists say a low pressure system from the Gulf of Mexico will move into southwestern Quebec and on to central and eastern regions on Friday but the exact amount of freezing rain will depend on the track the system follows.