Dense Fog Advisory issued January 25 at 11:49AM CST until January 25 at 6:00PM CST by NWS

...DENSE FOG ADVISORY NOW IN EFFECT UNTIL 6 PM CST THIS EVENING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of south central, southwest, and west central Illinois and central, east central, and northeast Missouri. * WHEN...Until 6 PM CST this evening. * IMPACTS...Low visibility could make driving conditions hazardous.