* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Fairfield, Worley, Downtown Spokane, Airway Heights, Post Falls, Davenport, Cheney, Rockford, Spokane Valley, Hayden, and Coeur d'Alene.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
* ADDITIONAL DETAILS...Localized areas of one quarter mile visibility or less, many areas one half up to one mile visibility.