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

DENSE FOG ADVISORY IN EFFECT FROM 5 PM MST /6 PM CST/ THIS AFTERNOON TO 11 AM MST /NOON CST/ WEDNESDAY... * WHAT...Visibility one quarter mile or less in dense fog. * WHERE...In Colorado, Kit Carson and Cheyenne Counties. In Kansas, Rawlins, Decatur, Norton, Sheridan and Graham Counties. In Nebraska, Hitchcock and Red Willow Counties. * WHEN...From 5 PM MST /6 PM CST/ this afternoon to 11 AM MST /noon CST/ Wednesday. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Slick spots may develop on roadways and elevated surfaces due to freezing fog.