UPDATE: Foggy conditions across Sarnia-Lambton

Blue Water Bridge shrouded in fog (BlackburnNews.com file photo by Dave Dentinger)

Environment Canada has ended a fog advisory for Sarnia-Lambton.

The national weather agency said locally dense fog was expected until late Thursday morning. The advisory ended shortly before 11 a.m.

Visibility was reduced suddenly to near zero in some areas.

Motorists were advised to slow down, watch for tail-lights ahead and be prepared to stop.