AREAS OF DENSE FOG POSSIBLE THROUGH TONIGHT... While rainfall has improved visibilities somewhat, areas of dense fog, with visibilities of one quarter mile or less at times, will remain possible throughout tonight, and visibilities may decrease late tonight into Friday morning after rainfall ends. Visibilities may fluctuate significantly over short distances. Exercise caution if traveling across central Indiana through the night. Slow down, leave plenty of space between vehicles, and use low beam headlights.