Dense fog develops when the air near the ground cools to its dew point—this is the temperature at which water vapor condenses into tiny liquid water droplets that remain suspended in the air.

We have a perfectly good explanation for why a few parts of the Prairies are shrouded in fog this week The week started with parts of the Prairies getting covered in dense fog, leading to low ...

"Fog's not as easy to predict as other types of weather," said Wright Dobbs, a forecaster with the Tallahassee weather service. The Tallahassee skyline is shrouded in fog Wednesday, Dec.