Winnebago Severe Watches & Warnings NOAA Weather Radio

Special Statement
Statement as of 8:56 PM CDT on May 05, 2015

... Patchy dense fog developing later tonight...

Patchy dense fog is expected to spread west across north central
Illinois and far northern Indiana later tonight and continue
through daybreak Wednesday. Visibility will drop to below a mile
in spots... with locally dense fog reducing visibility to less than
a quarter mile in spots. Exercise caution if traveling later
tonight... and be prepared for rapid changes in visibility.