Dense Fog Advisory issued August 10 at 1:05AM CDT until August 10 at 9:00AM CDT by NWS

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southwest and west central Illinois and central, east central, northeast and southeast Missouri. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility.