FZUS53 KGRB 270641
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
141 AM CDT Mon Apr 27 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-271000-
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-
141 AM CDT Mon Apr 27 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH TUESDAY AFTERNOON...

.REST OF THE NIGHT...SE wind 10 to 15 kts. Waves 2 ft or less.
Mostly cloudy.
.MONDAY...SE wind 15 to 25 kts. Waves 2 to 4 ft. Patchy fog. a
slight chance of showers in the morning. Rain showers and a
chance of thunderstorms in the afternoon.
.MONDAY NIGHT...S wind 15 to 25 kts veering SW after midnight.
Waves 2 to 4 ft. Patchy fog in the evening. showers in the
evening. A chance of thunderstorms. A chance of showers after
midnight.
.TUESDAY...W wind 15 to 25 kts decreasing to 10 to 15 kts in the
late morning and afternoon. Waves 1 to 3 ft. Partly sunny.

$$

LMZ541-271000-
Rock Island Passage to Sturgeon Bay WI-
141 AM CDT Mon Apr 27 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH TUESDAY AFTERNOON...

.REST OF THE NIGHT...SE wind 10 to 15 kts. Waves 1 to 3 ft.
Mostly cloudy.
.MONDAY...SE wind 15 to 25 kts. Waves 4 to 7 ft. Patchy fog.
showers and a chance of thunderstorms in the afternoon.
.MONDAY NIGHT...S wind to 30 kts veering SW 15 to 25 kts after
midnight. Waves 6 to 10 ft. Patchy fog in the evening. showers
and a chance of thunderstorms in the evening, then a chance of
showers after midnight.
.TUESDAY...W wind 15 to 25 kts decreasing to 10 to 15 kts in the
late morning and afternoon. Waves 4 to 7 ft. Partly sunny.

$$

LMZ542-543-271000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
141 AM CDT Mon Apr 27 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM CDT THIS MORNING
THROUGH TUESDAY AFTERNOON...

.REST OF THE NIGHT...SE wind 10 to 20 kts. Waves 2 to 4 ft.
Mostly cloudy.
.MONDAY...SE wind to 30 kts with gale force gusts to around
35 kts. Waves 4 to 7 ft building to 6 to 10 ft in the afternoon.
Patchy fog. a chance of showers in the morning. Rain showers and
a chance of thunderstorms in the afternoon.
.MONDAY NIGHT...S wind to 30 kts veering SW 15 to 25 kts after
midnight. Waves 8 to 12 ft subsiding to 6 to 10 ft after
midnight. Patchy fog in the evening. showers and a chance of
thunderstorms in the evening, then a chance of showers after
midnight.
.TUESDAY...W wind 15 to 25 kts decreasing to 10 to 15 kts early
in the afternoon. Waves 4 to 7 ft subsiding to 1 to 3 ft in the
afternoon. Partly sunny.

$$

See Lake Michigan Open Lake Forecast for Wednesday through Friday.

Wave height forecast is for ice free areas.