FZUS53 KGRB 231931 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 231 PM CDT Mon Mar 23 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-232200- 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- 231 PM CDT Mon Mar 23 2026 .THIS AFTERNOON...N wind 5 to 10 kts veering NE early in the afternoon. Waves 2 ft or less. Mostly sunny. .TONIGHT...S wind 10 to 15 kts veering SW after midnight. Waves 2 ft or less. A chance of light snow after midnight. .TUESDAY...SW wind 10 to 15 kts backing S 5 to 10 kts early in the afternoon. Waves 2 ft or less. Mostly cloudy. .TUESDAY NIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Mostly cloudy. $$ LMZ541-232200- Rock Island Passage to Sturgeon Bay WI- 231 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...N wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny. .TONIGHT...S wind 10 to 15 kts veering SW 15 to 25 kts after midnight. Waves 2 ft or less building to 4 to 7 ft after midnight. A chance of light snow after midnight. .TUESDAY...SW wind 15 to 25 kts decreasing to 10 to 15 kts mid-day, then backing S 5 to 10 kts early in the afternoon. Waves 4 to 7 ft subsiding to 2 to 4 ft in the afternoon. Mostly cloudy. .TUESDAY NIGHT...S wind 10 to 15 kts. Waves 2 to 4 ft. Mostly cloudy. $$ LMZ542-543-232200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 231 PM CDT Mon Mar 23 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...N wind 10 to 15 kts veering NE 5 to 10 kts early in the afternoon. Waves 2 ft or less. Mostly sunny. .TONIGHT...S wind 10 to 15 kts veering SW 15 to 25 kts after midnight. Waves 2 ft or less building to 3 to 5 ft after midnight. A slight chance of light snow after midnight. .TUESDAY...SW wind 15 to 25 kts backing S 10 to 15 kts in the late morning and afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft in the afternoon. Mostly cloudy. .TUESDAY NIGHT...S wind 10 to 15 kts. Waves 2 to 4 ft. Mostly cloudy. $$ See Lake Michigan Open Lake Forecast for Thursday through Saturday. Wave height forecast is for ice free areas.