...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM EDT THIS MORNING...

* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Portions of the Shenandoah Valley, Central Virginia Piedmont, West Virginia Panhandle, and Northern Maryland.

* WHEN...Until 10 AM EDT this morning.

* IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.