FZUS53 KGRB 190137 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 836 PM CDT Wed Mar 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-190400- 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- 836 PM CDT Wed Mar 18 2026 .TONIGHT...SW wind 10 to 15 kts. Waves 2 ft or less. A slight chance of light snow. A slight chance of light freezing rain after midnight. .THURSDAY...NW wind 5 to 10 kts veering E mid-day, then veering SE early in the afternoon. Waves 2 ft or less. Partly sunny. .THURSDAY NIGHT...S wind 5 to 10 kts veering SW after midnight. Waves 2 ft or less. Mostly cloudy. .FRIDAY...W wind 5 to 10 kts. Waves 2 ft or less. Partly sunny. $$ LMZ541-190400- Rock Island Passage to Sturgeon Bay WI- 836 PM CDT Wed Mar 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT CDT TONIGHT... .TONIGHT...SW wind 10 to 15 kts veering W 5 to 10 kts after midnight. Waves 4 to 7 ft. A chance of light snow in the evening. .THURSDAY...N wind 5 to 10 kts veering NE mid-day, then veering SE early in the afternoon. Waves 2 ft or less. Partly sunny. .THURSDAY NIGHT...S wind 10 to 15 kts. Waves 1 to 3 ft. Mostly cloudy. .FRIDAY...W wind 10 to 15 kts decreasing to 5 to 10 kts early in the afternoon. Waves 1 to 3 ft. Mostly cloudy. $$ LMZ542-543-190400- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 836 PM CDT Wed Mar 18 2026 .TONIGHT...SW wind 5 to 10 kts veering W after midnight. Waves 3 to 5 ft subsiding to 1 to 3 ft after midnight. A chance of light snow. Light rain likely after midnight. .THURSDAY...NW wind 5 to 10 kts veering E mid-day, then veering SE early in the afternoon. Waves 2 ft or less. Partly sunny. .THURSDAY NIGHT...S wind 5 to 10 kts veering SW 10 to 15 kts after midnight. Waves 2 ft or less. Mostly cloudy. .FRIDAY...W wind 10 to 15 kts veering NW in the late morning and afternoon. Waves 2 ft or less. Mostly cloudy. $$ See Lake Michigan Open Lake Forecast for Saturday through Monday. Wave height forecast is for ice free areas.