Dense Fog Advisory issued June 7 at 12:17AM CDT until June 7 at 9:00AM CDT by NWS St Louis MO

* WHAT...Visibility one quarter to one half mile in dense fog.

* WHERE...Portions of south central and southwest Illinois and
central and east central Missouri.

* WHEN...Until 9 AM CDT this morning.

* IMPACTS...Low visibility will make driving conditions hazardous
for the morning commute.