...DENSE FOG ADVISORY IN EFFECT FROM 1 AM TO 9 AM CDT SATURDAY...

* WHAT...Visibility as low as one quarter mile in dense fog.

* WHERE...Portions of southern Illinois, western Kentucky, and southeast Missouri.

* WHEN...From 1 AM to 9 AM CDT Saturday.

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

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