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

DENSE FOG ADVISORY IN EFFECT UNTIL NOON PST MONDAY... * WHAT...Visibility one quarter mile or less at times in dense fog. * WHERE...Kittitas Valley. * WHEN...Until noon PST Monday. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...In locations where temperatures drop below freezing, there will be freezing fog, which may cause slick roads and other surfaces.