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

DENSE FOG ADVISORY NOW IN EFFECT UNTIL 10 AM CST THIS MORNING... * WHAT...Visibility falling below one quarter mile in dense fog. * WHERE...Portions of northwest and west central Arkansas and east central, northeast and southeast Oklahoma. * WHEN...Until 10 AM CST this morning. * IMPACTS...Visibilities are expected to be reduced to less than one quarter mile in areas by the dense fog, creating hazardous driving conditions. * ADDITIONAL DETAILS...The patchy nature of the fog will reduce visibilities in a short distance and motorists should exercise caution this morning. In addition, with temperatures below freezing in some areas, a few slick spots may develop on bridges or overpasses.