* WHAT...Visibility one quarter mile or less in dense fog.

* WHERE...Autauga, Barbour, Bullock, Dallas, Elmore, Greene, Hale, Lee, Lowndes, Macon, Marengo, Montgomery, Perry, Pike, Russell, and Sumter Counties.

* WHEN...Until 9 AM CST Wednesday.

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