FZUS53 KGRB 181045 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 545 AM CDT Mon May 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-181600- Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI- 545 AM CDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT FROM TUESDAY MORNING THROUGH TUESDAY EVENING... .EARLY THIS MORNING...S wind 10 to 15 kts. Waves 2 ft or less. Patchy dense fog. a chance of showers and thunderstorms. .TODAY...S wind 10 to 15 kts. Waves 1 to 3 ft. Patchy dense fog in the morning. a chance of showers and a slight chance of thunderstorms. .TONIGHT...S wind 10 to 15 kts. Waves 1 to 3 ft. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...SW wind 15 to 25 kts veering NW early in the afternoon. Waves 2 to 4 ft. A chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 1 to 3 ft. Mostly cloudy in the evening then becoming partly cloudy. $$ LMZ541-181600- Rock Island Passage to Sturgeon Bay WI- 545 AM CDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT... .EARLY THIS MORNING...S wind 10 to 15 kts. Waves 3 to 5 ft. Patchy dense fog. a chance of showers and thunderstorms. .TODAY...S wind 15 to 25 kts decreasing to 10 to 15 kts early in the afternoon. Waves 4 to 7 ft. Patchy dense fog. a chance of showers and a slight chance of thunderstorms. .TONIGHT...S wind 10 to 15 kts increasing to 15 to 25 kts after midnight. Waves 5 to 8 ft. Patchy fog in the evening. Areas of dense fog after midnight. a chance of showers in the evening. A chance of thunderstorms. Rain showers likely after midnight. .TUESDAY...SW wind 15 to 25 kts veering NW early in the afternoon. Waves 5 to 8 ft. Patchy fog in the morning. a chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 3 to 5 ft subsiding to 1 to 3 ft after midnight. Mostly cloudy in the evening then becoming partly cloudy. $$ LMZ543-181600- Two Rivers to Sheboygan WI- 545 AM CDT Mon May 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT... .EARLY THIS MORNING...S wind 10 to 15 kts. Waves 3 to 5 ft. Patchy fog. a chance of showers and thunderstorms. .TODAY...S wind 15 to 25 kts. Waves 4 to 7 ft. Patchy fog. a chance of showers and thunderstorms. .TONIGHT...S wind 10 to 15 kts increasing to 15 to 25 kts in the late evening and overnight. Waves 4 to 7 ft. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...SW wind 15 to 25 kts veering W in the late morning and afternoon. Waves 5 to 8 ft subsiding to 4 to 7 ft in the afternoon. Patchy fog in the morning. a chance of showers in the morning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft. Partly cloudy. $$ LMZ542-181600- Sturgeon Bay to Two Rivers WI- 545 AM CDT Mon May 18 2026 ...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING... ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT... .EARLY THIS MORNING...S wind 10 to 15 kts. Waves 3 to 5 ft. Patchy dense fog. a slight chance of showers and thunderstorms. .TODAY...S wind 15 to 25 kts decreasing to 10 to 15 kts early in the afternoon. Waves 4 to 7 ft. Patchy dense fog. a chance of showers and a slight chance of thunderstorms. .TONIGHT...S wind 15 to 25 kts. Waves 4 to 7 ft. Patchy fog. a chance of showers and thunderstorms. .TUESDAY...S wind 15 to 25 kts veering W in the late morning and afternoon. Waves 5 to 8 ft subsiding to 4 to 7 ft in the afternoon. Patchy fog in the morning. a chance of showers in themorning. .TUESDAY NIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Mostly cloudy in the evening then becoming partly cloudy. $$ See Lake Michigan Open Lake Forecast for Wednesday through Friday. Wave height forecast is for ice free areas.