Headline:
Dense Fog Advisory issued May 23 at 8:39AM CDT until May 23 at 1:00PM CDT by NWS Chicago IL
Event:
Dense Fog Advisory
Urgency:
Expected
Effective:
May 23, 2026 - 6:39am
Expires:
May 23, 2026 - 11:00am
Description:
* WHAT...Dense fog will reduce visibility to 1 NM or less.
* WHERE...Winthrop Harbor to Calumet Harbor IL.
* WHEN...Until 1 PM CDT this afternoon.
* 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:
Winthrop Harbor to Wilmette Harbor IL; Wilmette Harbor to Northerly Island IL; Northerly Island to Calumet Harbor IL
Forcast Office:
NWS Chicago IL