Waarschuwingen, The Chicagoan

Dense Fog Advisory issued May 17 at 7:10AM CDT until May 17 at 9:00AM CDT by NWS Chicago IL * WHAT...Areas of dense fog with visibility locally less than one quarter of a mile. * WHERE...Portions of central, east central, north central and northeast Illinois and northwest Indiana. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Hazardous driving conditions due to low visibility. * ADDITIONAL DETAILS...Due to the patchy nature of the fog, motorists should be prepared to encounter sudden dramatic reductions in visibility. If driving, slow down, use your headlights, and leave plenty of distance ahead of you.