The National Weather Service in Indianapolis has issued a Dense Fog Advisory for Clinton County until 9 a.m. Thursday.
Visibility will be reduced to less than one quarter of a mile at times. Motorists need to reduce speed and exercise caution if driving. Use your headlights and leave plenty of distance ahead of you.
Besides Clinton, other affected areas include Boone, Carroll, Delaware, Fountain, Hamilton, Hendricks, Howard, Madison, Montgomery, Parke, Putnam, Randolph, Tippecanoe, Tipton, Vermillion, Vigo and Warren counties.