Environment Canada has issued a fog advisory for Hamilton Tuesday (Nov. 19) morning.
Additionally, the weather alert says, there is a risk of freezing drizzle Tuesday morning where temperatures have fallen below the freezing mark. Untreated surfaces may become slippery.
Conditions will improve through the morning.
Visibility may be significantly and suddenly reduced to near zero.
Motorists are urged that if visibility is reduced while driving, slow down, watch for tail lights ahead and be prepared to stop.