...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...

* WHAT...Visibility less than one half mile in dense fog.

* WHERE...Portions of central, east central, and west central Illinois.

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

* IMPACTS...Low visibility could make driving conditions hazardous.

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