If driving, slow down, use your headlights, and leave plenty of distance ahead of you. Be alert for slick spots on roads.

DENSE FOG ADVISORY IN EFFECT FROM 5 PM MST /6 PM CST/ THIS AFTERNOON TO 11 AM MST /NOON CST/ TUESDAY... * WHAT...Visibility one quarter mile or less in dense fog. Some light accumulations of ice are possible. * WHERE...Portions of east central and northeast Colorado, northwest and west central Kansas and southwest Nebraska. * WHEN...From 5 PM MST /6 PM CST/ this afternoon to 11 AM MST /noon CST/ Tuesday. * IMPACTS...Hazardous driving conditions due to low visibility and potential slick spots. * ADDITIONAL DETAILS...A glaze of ice is possible with the fog. The fog is expected to begin closer to Central Kansas and expand west through the evening. If you do not see it initially, do not let your guard down.