Special Weather Statement issued December 15 at 6:39PM CST by NWS Lincoln IL
Patchy dense fog has formed across portions of east central Illinois in the last couple of hours. Visibility may fall below one-quarter mile at times through this evening, leading to potentially hazardous travel conditions. Expect rapid changes in visibility over short distances, with visibility possibly even near zero at times. Be sure to slow down if you encounter dense fog. Use low beam headlights if driving, and leave plenty of distance between you and the vehicle ahead.