The National Weather Service (NWS) issued a statewide dense fog advisory Tuesday night including all 82 counties until 9 a.m. Wednesday.
The NWS said visibilities in dense fog will drop to a quarter of a mile or less at times, creating very hazardous driving conditions.
Mostly clear skies, calm winds and plentiful atmospheric moisture over the region had contributed to the rapid development of dense fog in many locations as of 10 p.m. Tuesday.
Visibilities in dense fog in the capital city of Jackson was reported as low as a quarter-mile at 11 p.m. Tuesday.
Motorists are advised to slow down, use low beam headlights and leave plenty of distance between your vehicle and the vehicle ahead of you.
Dense fog back in December contributed to a 30-vehicle pile-up on Highway 49 in Simpson County that left several people with minor injuries.