Special Weather Statement: Special Weather Statement issued October 21 at 3:19PM EDT by NWS Louisville KY

River valley fog is expected to form through the overnight lasting through Thursday morning. With clear skies and calm winds, valley fog will become dense in localized areas. Additional patchy fog may develop outside of these valleys as well. If traveling through river valleys and low-lying areas in the morning, increase the following distance and use low-beam headlights. Be sure to drive slower through dense fog and leave early to allow extra time to get to your destination.