NWS Marine Forecast



 Hazardous marine condition(s):
 Hazardous Weather Outlook
   LMZ080-669-671-673-675-777-779-870-872-874-876-878-180330-  Lake Michigan from Michigan City IN to St. Joseph MI 5 NM  offshore to Mid Lake-  Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore  to Mid Lake-  Lake Michigan from Port Washington to North Point Light WI 5 NM  offshore to Mid Lake-  Lake Michigan from North Point Light to Wind Point WI 5 NM  offshore to Mid Lake-  Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM  offshore to Mid Lake-  Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM  offshore to Mid Lake-  Lake Michigan from Wilmette Harbor IL to Michigan City IN 5 NM  offshore to Mid Lake-  Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid  Lake-  Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to  Mid Lake-  Lake Michigan from Holland to Grand Haven MI 5 NM offshore to Mid  Lake-  Lake Michigan from South Haven to Holland MI 5 NM offshore to Mid  Lake-  Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to  Mid Lake-  306 PM CDT Fri Jul 17 2026    SHEBOYGAN WI TO PENTWATER MI SOUTH...    DENSE SMOKE ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING    TONIGHT  South winds 10 to 20 kt becoming southwest 15 to  25 kt. Areas of smoke this evening. Slight chance of  thunderstorms with isolated showers this evening. Waves 2 to  4 ft.  SATURDAY  West winds 15 to 25 kt veering to north to 30 kt.  Chance of showers and slight chance of thunderstorms in the  morning, then chance of showers and thunderstorms in the  afternoon. Patchy smoke in the afternoon. Waves 3 to 5 ft  building to 4 to 7 ft occasionally to 9 ft.  SATURDAY NIGHT  North winds to 30 kt becoming northeast 10 to  20 kt. Patchy smoke in the evening. Waves 4 to 7 ft occasionally  to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.  SUNDAY  Northeast winds 10 to 15 kt becoming north 10 to 20 kt.  Waves 3 to 5 ft subsiding to 1 to 3 ft.  SUNDAY NIGHT  Southeast winds 10 to 15 kt becoming south 10 to  20 kt. Waves 1 to 2 ft building to 1 to 3 ft.  MONDAY  South winds to 30 kt increasing to gales to 35 kt.  Chance of showers in the morning, then chance of showers and  thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to  8 ft building to 5 to 8 ft occasionally to 10 ft.  MONDAY NIGHT  Southwest gales to 35 kt diminishing to 30 kt.  Showers likely with a chance of thunderstorms. Waves 5 to 8 ft  occasionally to 10 ft.  TUESDAY  West winds to 30 kt becoming northwest gales to 35 kt.  Waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft  occasionally to 10 ft.  WEDNESDAY  Northwest gales to 35 kt becoming north. Waves 8 to  12 ft occasionally to 16 ft.    $$