Nearshore Marine Forecast
Issued by NWS Green Bay, WI
Issued by NWS Green Bay, WI
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391 FZUS53 KGRB 210145 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 844 PM CDT Thu Mar 20 2025 For waters within five nautical miles of the shore on Lake Michigan LMZ521-522-210800- 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- 844 PM CDT Thu Mar 20 2025 .TONIGHT...SW wind 10 to 20 kts with a few gusts to around 25 kts. Mostly clear. Waves 2 ft or less. .FRIDAY...SW wind 10 to 20 kts with a few gusts to around 25 kts. A slight chance of light rain in the afternoon. Waves 2 ft or less. A Small Craft Advisory may be needed. .FRIDAY NIGHT...N wind 10 to 20 kts with gusts to around 25 kts. A chance of light snow and light rain in the evening. Waves 2 ft or less. .SATURDAY...N wind 10 to 15 kts backing SW 5 to 10 kts in the afternoon. Mostly sunny. Waves 2 ft or less. Wave height forecast is for ice free areas. $$ LMZ541-210800- Rock Island Passage to Sturgeon Bay WI- 844 PM CDT Thu Mar 20 2025 .TONIGHT...SW wind 10 to 20 kts with a few gusts to around 25 kts. Mostly clear. Waves 1 to 3 ft building to 2 to 4 ft late in the night. .FRIDAY...SW wind 15 to 25 kts. A slight chance of light rain in the afternoon. Waves 2 to 4 ft building to 4 to 7 ft in the late morning and afternoon. A Small Craft Advisory may be needed. .FRIDAY NIGHT...N wind 15 to 25 kts with gusts to around 30 kts. A chance of light snow and light rain in the evening. Waves 4 to 7 ft subsiding to 3 to 5 ft early in the morning. .SATURDAY...NW wind 10 to 15 kts backing W 5 to 10 kts in the afternoon. Partly cloudy in the morning then clearing. Waves 2 to 4 ft subsiding to 2 ft or less in the late morning and afternoon. $$ LMZ542-543-210800- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 844 PM CDT Thu Mar 20 2025 .TONIGHT...SW wind 10 to 20 kts with a few gusts to around 25 kts. Mostly clear. Waves 2 ft or less building to 2 to 4 ft late in the night. .FRIDAY...S wind 15 to 25 kts veering SW 10 to 15 kts in the afternoon. A slight chance of light rain in the afternoon. Waves 2 to 4 ft building to 4 to 7 ft mid-day, then subsiding to 3 to 5 ft late in the afternoon. A Small Craft Advisory may be needed. .FRIDAY NIGHT...N wind 15 to 25 kts. A chance of light rain and light snow in the evening. Waves 4 to 7 ft. .SATURDAY...N wind 10 to 20 kts veering NE 5 to 10 kts in the afternoon. Partly cloudy in the morning then clearing. Waves 3 to 5 ft subsiding to 1 to 3 ft in the late morning and afternoon. $$ See Lake Michigan Open Lake Forecast for Sunday through Tuesday.