The National Weather Service issued a weather alert at 4:06 a.m. on Sunday for dense fog until 9 a.m. for Athens, Jackson, Vinton, Meigs and Gallia counties.

The National Weather Service issued a dense fog advisory at 5:41 a.m. on Sunday in effect until 10 a.m. for Mercer, Lawrence and Butler counties.

EDT a dense fog advisory was issued by the National Weather Service in effect until 10 a.m. EDT for Mason, Lake, Osceola, Clare, Oceana, Newaygo, Mecosta, Isabella, Muskegon, Montcalm, Gratiot, Ottawa,

If a dense fog advisory is issued for your area, it means that widespread dense fog has developed and visibility often drops to just a quarter-mile or less. These conditions can make driving challenging,