The advisory was issued for Northern Lycoming and Southern Lycoming as well as Tioga, Sullivan, Montour, Northumberland, Columbia, Lebanon, York and Lancaster counties.

"The fog is lifting and visibility will continue to improve this morning," says the National Weather Service.

Navigating fog: Safety tips by the weather service

If a dense fog advisory is issued for your area, it means that widespread dense fog has developed and visibility often drops to just a quarter-mile or less. These conditions can make driving challenging, so exercise extreme caution on the road, and if possible, consider delaying your trip.

If you must drive in foggy conditions, keep the following safety tips in mind:

Moderate your speed:

Slow down and allocate extra travel time to reach your destination safely

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