FZUS53 KGRB 121457
NSHGRB

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

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-122200-
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-
957 AM CDT Sun Apr 12 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 PM CDT THIS AFTERNOON
THROUGH LATE TONIGHT...

.THIS AFTERNOON...SE wind 10 to 15 kts veering S 15 to 25 kts
early in the afternoon. Waves 1 to 3 ft building to 2 to 4 ft in
the afternoon. Patchy fog. showers likely early in the morning. A
chance of thunderstorms. A chance of showers in the afternoon.
.TONIGHT...SW wind 15 to 25 kts decreasing to 10 to 15 kts after
midnight. Waves 3 to 5 ft. A slight chance of showers in the
evening. patchy fog.
.MONDAY...W wind 5 to 10 kts veering NE mid-day, then veering E
10 to 15 kts early in the afternoon. Waves 1 to 3 ft. Patchy fog
in the morning. .
.MONDAY NIGHT...SE wind 10 to 15 kts backing N after midnight.
Waves 2 ft or less. Rain showers and a chance of thunderstorms.

$$

LMZ541-122200-
Rock Island Passage to Sturgeon Bay WI-
957 AM CDT Sun Apr 12 2026

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

.THIS AFTERNOON...S wind 15 to 25 kts. Waves 5 to 8 ft building
to 6 to 10 ft in the afternoon. Patchy fog early in the morning.
Areas of dense fog in the afternoon. showers likely early in the
morning. A chance of thunderstorms. A chance of showers in the
afternoon.
.TONIGHT...SW wind 15 to 25 kts decreasing to 10 to 15 kts after
midnight. Waves 6 to 10 ft. A slight chance of showers in the
evening. 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.
.MONDAY NIGHT...SE wind 10 to 15 kts backing NW after midnight.
Waves 1 to 3 ft building to 2 to 4 ft after midnight. Rain
showers and a chance of thunderstorms.

$$

LMZ542-543-122200-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
957 AM CDT Sun Apr 12 2026

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

.THIS AFTERNOON...S wind 15 to 25 kts. Waves 5 to 8 ft. Patchy
fog. showers likely early in the morning. A chance of
thunderstorms. A chance of showers in the afternoon.
.TONIGHT...SW wind 15 to 25 kts. Waves 6 to 10 ft subsiding to
4 to 7 ft after midnight. A slight chance of showers and
thunderstorms in the evening. patchy fog.
.MONDAY...W wind 10 to 15 kts backing SE in the late morning and
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.
.MONDAY NIGHT...SE wind 10 to 15 kts veering SW after midnight.
Waves 3 to 5 ft. Rain showers and a chance of thunderstorms.

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.

Wave height forecast is for ice free areas.