The National Weather Service has issued Dense Fog Advisories for all counties in western, southwest, west central and northwest Iowa. In Cass-Adair-Adams-Audubon-Carroll-Crawford-Dallas-Guthrie-Madison-Union-Taylor and Ringgold Counties, a DENSE FOG ADVISORY is in effect until 4-a.m. Sunday. In Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont and Page Counties, a DENSE FOG ADVISORY is in effect until 9-a.m., Sunday.

* VISIBILITY…IS EXPECTED TO DROP TO A QUARTER MILE OR LESS
DURING THE EVENING AND CONTINUE OVERNIGHT. AREAS ALONG AND EAST OF THE MISSOURI RIVER SHOULD SEE THE DENSE FOG FIRST, WITH AN EXPANSION TO THE WEST AND SOUTH THROUGH THE EVENING.

* IMPACTS…REDUCED VISIBILITIES WILL CAUSE SOME DIFFICULT DRIVING
CONDITIONS. ALSO, WITH SOME TEMPERATURES NEAR OR JUST BELOW
FREEZING, LIGHT GLAZING ON ROADS AND SIDEWALKS COULD LEAD TO
SLIPPERY CONDITIONS. CAUTION IS ADVISED WHILE DRIVING OR
WALKING.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING, SLOW DOWN, USE
YOUR HEADLIGHTS, AND LEAVE PLENTY OF DISTANCE AHEAD OF YOU.