FZUS53 KGRB 182143 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 343 PM CST Wed Feb 18 2026 For waters within five nautical miles of shore on Lake Michigan LMZ541-190500- Rock Island Passage to Sturgeon Bay WI- 343 PM CST Wed Feb 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 10 PM CST THIS EVENING... .LATE THIS AFTERNOON...SE wind 10 to 15 kts. Waves 4 to 7 ft. Patchy fog. a chance of light rain. .TONIGHT...S wind 10 to 15 kts. Waves 4 to 7 ft subsiding to 2 to 4 ft after midnight. Patchy fog in the evening. a chance of light rain. .THURSDAY...S wind 10 to 15 kts backing E 5 to 10 kts early in the afternoon. Waves 1 to 3 ft. Partly sunny. .THURSDAY NIGHT...NE wind 10 to 15 kts veering E 15 to 25 kts in the late evening and overnight. Waves 2 to 4 ft building to 4 to 7 ft after midnight. A chance of light rain in the evening, then rain after midnight. A Small Craft Advisory may be needed. .FRIDAY...E wind 15 to 25 kts backing NW 10 to 20 kts early in the afternoon. Waves 4 to 7 ft. Rain and light snow. $$ LMZ542-543-190500- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 343 PM CST Wed Feb 18 2026 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING... .LATE THIS AFTERNOON...S wind 10 to 15 kts. Waves 3 to 5 ft. A slight chance of light rain. .TONIGHT...SW wind 5 to 10 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. A slight chance of light rain in the evening. .THURSDAY...SW wind 5 to 10 kts backing E early in the afternoon. Waves 2 ft or less. Mostly sunny in the morning then becoming partly cloudy. .THURSDAY NIGHT...NE wind 10 to 15 kts veering E 15 to 25 kts in the late evening and overnight. Waves 2 to 4 ft building to 4 to 7 ft after midnight. A chance of light rain in the evening, then rain after midnight. A Small Craft Advisory may be needed. .FRIDAY...W wind 10 to 20 kts veering NW 15 to 25 kts in the late morning and afternoon. Waves 4 to 7 ft. Light rain and light snow likely. $$ See Lake Michigan Open Lake Forecast for Saturday through Monday. Wave height forecast is for ice free areas.