(Thursday, July 22, 2021) – Patchy dense fog has developed across locations south of the I-40 corridor and across much of the Cumberland Plateau. Visibilities in some locations will be less than one quarter of a mile. Hazardous driving conditions could be possible across these locations. If driving on roadways in these locations as the morning hours progress, slow down, use your low beam headlights, leave plenty of distance ahead of you, and leave early for your desired destination. The fog should burn off by around 8 a.m. central time.