School buses in Lambton-Kent were cancelled again Thursday morning because of foggy conditions.
School buses in all zones, 1 through 8, were cancelled for the morning commute but will operate as normal in the afternoon.
Environment Canada had issued a fog advisory for Sarnia-Lambton and Chatham-Kent.
The national weather agency said dense fog is expected to lift late Thursday morning, but some patchy fog may linger in some areas until around noon.
Drivers were being reminded to be prepared for areas of near-zero visibility and allow extra time to reach your destination.
