WHUS73 KLOT 161338 MWWLOT URGENT - MARINE WEATHER MESSAGE National Weather Service Chicago IL 838 AM CDT Thu Apr 16 2026 LMZ740-161445- /O.CAN.KLOT.MF.Y.0005.000000T0000Z-260416T1400Z/ Winthrop Harbor to Wilmette Harbor IL- 838 AM CDT Thu Apr 16 2026 ...DENSE FOG ADVISORY IS CANCELLED... The threat for widespread dense fog has diminished. $$