If driving, slow down, use your headlights, and leave plenty of
distance ahead of you.
DENSE FOG ADVISORY NOW IN EFFECT UNTIL NOON CST WEDNESDAY...
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Portions of south central, southwest, and west central
Illinois and central, east central, northeast, and southeast
Missouri.
* WHEN...Until noon CST Wednesday.
* IMPACTS...Low visibility could make driving conditions hazardous.