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

DENSE FOG ADVISORY IN EFFECT UNTIL 3 AM CST THURSDAY... * WHAT...Visibility one quarter mile or less in dense fog. The dense fog is expected to gradually improve after midnight as widespread areas of rain move into the Advisory area from the southwest. * WHERE...Portions of southwest Arkansas, southeast Oklahoma and northeast Texas. * WHEN...Until 3 AM CST Thursday. * IMPACTS...Hazardous driving conditions due to low visibility.