The National Weather Service in Des Moines has issued a Freezing Fog Advisory effective until 10am Monday morning for the following counties, Adair, Adams, Appanoose, Audubon, Carroll, Cass, Clarke, Crawford, Decatur, Guthrie, Lucas, Madison, Monroe, Ringgold, Taylor, Union and Wayne. The National Weather Service in Omaha has a Dense Fog Advisory until 9am for Fremont, Harrison, Mills, Monona, Pottawattamie, Shelby, Montgomery and Page counties.

TIMING…DENSE FOG WILL CONTINUE TO OVERSPREAD THE AREA TONIGHT. POCKETS OF DENSE FOG NOW WILL EXPAND ESPECIALLY AFTER MIDNIGHT. THE FOG IS EXPECTED TO CONTINUE THROUGH MID MORNING MONDAY.

VISIBILITY…VISIBILITY WILL RANGE FROM ONE-EIGHTH OF A MILE TO ONE HALF OF A MILE OVER THE ADVISORY AREA.

IMPACTS…TRAVELERS WILL NEED TO SLOW DOWN AND BE ESPECIALLY CAUTIOUS WHEN APPROACHING INTERSECTIONS…RAIL ROAD CROSSINGS…AND TRAVELING ACROSS BRIDGES AND OVERPASSES. BE PREPARED FOR RAPIDLY CHANGING VISIBILITY AND RAPIDLY CHANGING ROAD CONDITIONS. FROST IS LIKELY TO FORM ON AREA ROADS DUE TO THE NATURE OF THE FOG. ALLOW EXTRA TIME TO REACH YOUR DESTINATION SAFELY OVERNIGHT TONIGHT AND EARLY MONDAY MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

A FREEZING 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. ALSO…BE ALERT FOR FROST ON BRIDGE DECKS CAUSING SLIPPERY ROADS.