Areas of fog, locally dense in spots, is underway or is expected to develop this morning. Reduced visibilities below half a mile will be possible from now until around sunrise. If traveling this morning, use extra caution and be prepared for rapidly changing visibilities.

Areas of dense fog have developed overnight. It is particularly prevalent in valleys near rivers and larger streams. Visibility in many places is less than a quarter mile. If traveling in dense fog, slow down and use low beam headlights, even during daylight so that others can more easily see you. The fog will dissipate after sunrise and conditions should improve considerably by 10 AM.