Headline:
Dense Fog Advisory issued May 23 at 6:49PM CDT until May 23 at 10:00PM CDT by NWS Chicago IL
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
May 23, 2026 - 4:49pm
Expires:
May 23, 2026 - 8:00pm
Description:
* WHAT...Dense fog will reduce visibility to under 1/2 mile at
times.
* WHERE...Wilmette Harbor to Calumet Harbor IL, and Calumet
Harbor IL to Burns Harbor IN.
* WHEN...Until 10 PM CDT this evening.
* IMPACTS...Low visibility will make navigation difficult.
Instruction:
If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.
Area Description:
Wilmette Harbor to Northerly Island IL; Northerly Island to Calumet Harbor IL; Calumet Harbor IL to Gary IN; Gary to Burns Harbor IN
Forcast Office:
NWS Chicago IL