Dense fog has enveloped Missouri, drastically reducing visibility across the state and posing significant risks to drivers. The persistent fog, reported since early morning, has prompted the National Weather Service to issue a fog advisory, cautioning motorists about the potential for sudden visibility changes. The advisory emphasizes the need for drivers to reduce speed, increase following distance, and use headlights, even during daylight, to enhance safety. Residents are also advised to anticipate travel delays and stay informed about the latest weather updates through various channels like radio, television, and online platforms.