* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. Portions of northeast Kentucky, southeast Ohio, southwest Virginia, and central, northeast, northern, southeast, southern, and western West Virginia. * WHEN. Until 10 AM EDT this morning. * IMPACTS. Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS. The combination of clear skies, light winds and lingering low-level moisture is allowing areas of fog to develop and become dense this morning.

* WHAT. Visibility one quarter mile or less in dense fog. * WHERE. Portions of northeast Kentucky, southeast Ohio, southwest Virginia, and central, northeast, northern, southeast, southern, and western West Virginia. * WHEN. Until 10 AM EDT this morning. * IMPACTS. Low visibility could make driving conditions hazardous.

Patchy dense fog is ongoing early this morning, especially in and around river valleys. Reductions in visibilities to below one quarter mile will be possible at times and could result in hazardous travel during the morning commute. Fog should begin to lift and dissipate after sunrise.

Patchy dense fog is ongoing early this morning, especially in and around river valleys. Reductions in visibilities to below one quarter mile will be possible at times and could result in hazardous travel during the morning commute. Fog should begin to lift and dissipate after sunrise.

Patchy dense fog will continue to develop this morning, especially in area river valleys. Visibilities of a quarter of a mile or less will be likely, especially along the river valleys. The fog will gradually lift and improve after sunrise this morning. Fog, with visibility below a half mile at times, will require lower speeds, and greater distances between vehicles. Do not assume the road ahead is unobstructed. Slow down, use low beam headlights, and allow more time to reach your destination safely