FZUS53 KGRB 131858 NSHGRB Nearshore Marine Forecast National Weather Service Green Bay WI 157 PM CDT Mon Apr 13 2026 For waters within five nautical miles of shore on Lake Michigan LMZ521-522-132200- 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- 157 PM CDT Mon Apr 13 2026 .THIS AFTERNOON...E wind 5 to 10 kts. Waves 2 ft or less. A slight chance of light rain and thunderstorms. .TONIGHT...E wind 10 to 15 kts backing N 5 to 10 kts after midnight. Waves 2 ft or less. Patchy fog in the evening. Areas of dense fog after midnight. rain and a chance of thunderstorms. .TUESDAY...N wind 5 to 10 kts veering NE in the late morning and afternoon. Waves 2 ft or less. Patchy fog in the morning. a chance of light rain in the afternoon. .TUESDAY NIGHT...E wind 5 to 10 kts backing NE in the late evening and overnight. Waves 2 ft or less. A chance of light rain. $$ LMZ541-132200- Rock Island Passage to Sturgeon Bay WI- 157 PM CDT Mon Apr 13 2026 .THIS AFTERNOON...E wind 5 to 10 kts. Waves 2 to 4 ft. Mostly cloudy. .TONIGHT...E wind 10 to 15 kts. Waves 3 to 5 ft. Patchy fog in the evening. Areas of dense fog after midnight. rain and a chance of thunderstorms. A Small Craft Advisory may be needed. .TUESDAY...N wind 5 to 10 kts veering E early in the afternoon. Waves 3 to 5 ft. Widespread fog in the morning. . A Small Craft Advisory may be needed. .TUESDAY NIGHT...NE wind 5 to 10 kts. Waves 1 to 3 ft. A chance of light rain. $$ LMZ542-543-132200- Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI- 157 PM CDT Mon Apr 13 2026 .THIS AFTERNOON...E wind 10 to 15 kts. Waves 1 to 3 ft. Areas of dense fog. a chance of light rain and thunderstorms. .TONIGHT...E wind 10 to 15 kts veering SW after midnight. Waves 3 to 5 ft. Patchy fog in the evening. Areas of dense fog after midnight. thunderstorms likely in the evening. Light rain. A chance of thunderstorms after midnight. A Small Craft Advisory may be needed. .TUESDAY...NW wind 5 to 10 kts veering E in the late morning and afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft in the afternoon. Areas of dense fog in the morning. . A Small Craft Advisory may be needed. .TUESDAY NIGHT...NE wind 5 to 10 kts backing N in the late evening and overnight. Waves 1 to 3 ft. Light rain likely in the evening, then a chance of light rain after midnight. $$ See Lake Michigan Open Lake Forecast for Wednesday through Friday. Wave height forecast is for ice free areas.