Widespread, dense fog will continue over the Perry area and portions of central Iowa early Friday morning, according to a special weather statement by the National Weather Service office in Des Moines.
Visibility has been reduced to one-quarter mile or less at times, making driving very difficult.
The dense fog is expected to continue to develop to the southeast through the pre-dawn hours as it concurrently dissipates on the northwestern side as light winds from the north or northwest develop and bring in drier air.
Motorists are advised to use low-beam headlights and allow extra space between their vehicles and the vehicles ahead of them. Slow down in foggy weather.
Along with Dallas County, the fog is thick in Wright, Franklin, Butler, Bremer, Webster, Hamilton, Hardin, Grundy, Black Hawk, Carroll, Greene, Boone, Story, Marshall, Audubon, Guthrie, Polk, Jasper, Cass and Adair counties.
Along with Perry, the fog-bound cities include Eagle Grove, Clarion, Belmond, Hampton,
Parkersburg, Clarksville, Shell Rock, Greene, Aplington, Allison, Dumont, Waverly, Fort Dodge, Webster City, Iowa Falls, Eldora, Ackley, Grundy Center, Reinbeck, Conrad, Dike, Wellsburg, Waterloo, Cedar Falls, Carroll, Jefferson, Boone, Ames, Marshalltown, Audubon, Exira, Guthrie Center, Panora, Bayard, Casey, Waukee, Adel, Des Moines, Newton, Atlantic,
Greenfield, Stuart, Adair and Fontanelle.
ThePerryNews.com will update this weather story as forecasts evolve.