FZUS53 KGRB 120625
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
124 AM CDT Sun Apr 12 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-121000-
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-
124 AM CDT Sun Apr 12 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.REST OF THE NIGHT...SE wind 10 to 15 kts. Waves 1 to 3 ft.
Patchy fog. showers and a chance of thunderstorms.
.SUNDAY...S wind 15 to 25 kts. Waves 2 to 4 ft. Patchy fog.
showers likely in the morning. A chance of thunderstorms. A
chance of showers in the afternoon.
.SUNDAY NIGHT...SW wind to 30 kts decreasing to 10 to 20 kts
after midnight. Waves 3 to 5 ft. Patchy fog. .
.MONDAY...W wind 5 to 10 kts veering NE mid-day, then veering E
early in the afternoon. Waves 2 ft or less. Patchy fog in the
morning. .

$$

LMZ541-121000-
Rock Island Passage to Sturgeon Bay WI-
124 AM CDT Sun Apr 12 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.REST OF THE NIGHT...SE wind 10 to 15 kts increasing to 15 to
25 kts after midnight. Waves 4 to 7 ft. Patchy fog. showers and a
slight chance of thunderstorms.
.SUNDAY...S wind 15 to 25 kts. Waves 5 to 8 ft building to 6 to
10 ft in the afternoon. Patchy fog in the morning. Areas of dense
fog in the afternoon. showers in the morning. A chance of
thunderstorms. A chance of showers in the afternoon.
.SUNDAY NIGHT...SW wind to 30 kts decreasing to 10 to 20 kts
after midnight. Waves 6 to 10 ft. Areas of fog in the evening,
then patchy fog after midnight. .
.MONDAY...W wind 10 to 15 kts veering NE 5 to 10 kts mid-day,
then veering E early in the afternoon. Waves 4 to 7 ft subsiding
to 2 to 4 ft in the afternoon. Patchy fog in the morning. A Small
Craft Advisory may be needed.

$$

LMZ542-543-121000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
124 AM CDT Sun Apr 12 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY MORNING...

.REST OF THE NIGHT...SE wind 15 to 25 kts. Waves 4 to 7 ft. Rain
showers and a chance of thunderstorms.
.SUNDAY...S wind 15 to 25 kts. Waves 5 to 8 ft. Patchy fog. a
chance of showers and thunderstorms.
.SUNDAY NIGHT...SW wind to 30 kts. Waves 6 to 10 ft subsiding to
4 to 7 ft after midnight. Patchy fog. .
.MONDAY...W wind 10 to 15 kts backing SE early in the afternoon.
Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Patchy
fog in the morning. a chance of showers in the afternoon.

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.

Wave height forecast is for ice free areas.