The National Weather Service office in Johnston has issued a dense fog advisory until 9 a.m. Wednesday for the Perry area and parts of central, north-central and southeast Iowa.
Visibility of one-quarter mile or less in dense fog is forecast.
If driving, slow down, use your headlights and leave plenty of distance ahead of you, the NWS advises.
Along with Dallas County, the dense fog advisory is in effect for Emmet, Kossuth, Winnebago, Worth, Palo Alto, Hancock, Cerro Gordo, Pocahontas, Humboldt, Wright, Franklin, Butler, Bremer, Calhoun, Webster, Hamilton, Hardin, Grundy, Black Hawk, Greene, Boone, Story, Marshall, Tama, Polk, Jasper, Poweshiek, Madison, Warren, Marion, Mahaska,
Clarke, Lucas, Monroe, Wapello, Wayne, Appanoose and Davis counties.
Along with Perry, the cities of Estherville, Algona, Forest City, Lake Mills, Northwood, Manly, Emmetsburg, Garner, Britt, Kanawha, Mason City, Clear Lake, Pocahontas, Laurens, Rolfe, Fonda, Gilmore City, Humboldt, Eagle Grove, Clarion, Belmond, Hampton, Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Rockwell City, Manson, Lake City, Pomeroy, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Jefferson, Boone, Ames, Marshalltown, Tama, Toledo, Traer, Dysart, Gladbrook, Waukee, Adel, Des Moines, Newton, Grinnell, Winterset, Earlham, Indianola, Norwalk, Carlisle, Pella, Knoxville, Oskaloosa, Osceola, Chariton, Albia, Ottumwa, Corydon, Seymour, Allerton, Humeston, Centerville
and Bloomfield are under the dense fog advisory.
ThePerryNews.com will update this weather story as forecasts evolve.