Patchy Fog... Patchy fog has developed in parts of southern Indiana and central Kentucky early this morning. The fog is locally dense in some spots. Use caution if out on the roads. Be on the lookout for foggy areas, and be prepared to reduce your speed. Use low-beam headlights in fog and leave plenty of space between vehicles. Roads are damp from earlier rains, so braking distance will be greater than under normal, dry conditions.