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

DENSE FOG ADVISORY IN EFFECT UNTIL NOON CST /1 PM EST/ WEDNESDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Illinois, southwest Indiana, western Kentucky and southeast Missouri. * WHEN...Until noon CST /1 PM EST/ Wednesday. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...The dense fog advisory covers all of southeast Missouri, southern Illinois, southwest Indiana, and far west and northwest Kentucky.