Motorists are urged to exercise caution this morning as dense fog has reduced visibility to a quarter mile in some areas of South Jersey.

The National Weather Service has issued a dense fog advisory through 9 a.m. for nearly all of New Jersey, eastern Pennsylvania, Delaware and northeast Maryland. Fog may persist past 9 a.m. in some areas.

Drivers are asked to use their slow down, use their headlights and be especially cautious on bridges and overpasses, as they may be icy in some areas.

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