FZUS53 KGRB 050131 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 831 PM CDT Mon May 4 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-050400- 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- 831 PM CDT Mon May 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...NW wind 10 to 20 kts backing W 5 to 10 kts after midnight. Waves 1 to 3 ft. Partly cloudy. .TUESDAY...W wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny. .TUESDAY NIGHT...NW wind 5 to 10 kts veering N in the late evening and overnight. Waves 2 ft or less. Partly cloudy in the evening then becoming mostly cloudy. .WEDNESDAY...NW wind 5 to 10 kts backing W in the late morning and afternoon. Waves 2 ft or less. Partly sunny. $$ LMZ541-050400- Rock Island Passage to Sturgeon Bay WI- 831 PM CDT Mon May 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...NW wind 5 to 10 kts backing W after midnight. Waves 3 to 5 ft subsiding to 2 to 4 ft after midnight. Mostly cloudy in the evening then clearing. .TUESDAY...W wind 10 to 15 kts backing SW 5 to 10 kts early in the afternoon. Waves 2 ft or less. Mostly sunny. .TUESDAY NIGHT...N wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy. .WEDNESDAY...NW wind 5 to 10 kts backing S early in the afternoon. Waves 2 ft or less. Partly sunny. $$ LMZ542-543-050400- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 831 PM CDT Mon May 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CDT THIS EVENING... .TONIGHT...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. .TUESDAY...W wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny in the morning then becoming partly cloudy. .TUESDAY NIGHT...W wind 5 to 10 kts veering N in the late evening and overnight. Waves 2 ft or less. Partly cloudy. .WEDNESDAY...N wind 5 to 10 kts backing S early in the afternoon. Waves 2 ft or less. Partly sunny. $$ See Lake Michigan Open Lake Forecast for Thursday through Saturday. Wave height forecast is for ice free areas.