FZUS53 KGRB 121925
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
225 PM 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-
225 PM CDT Sun Apr 12 2026

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

.THIS AFTERNOON...S wind 10 to 20 kts. Waves 2 to 4 ft. Patchy
fog. a chance of light rain and thunderstorms.
.TONIGHT...SW wind 15 to 25 kts decreasing to 10 to 15 kts after
midnight. Waves 3 to 5 ft. A chance of light rain 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. a chance of light rain in the afternoon.
.MONDAY NIGHT...E wind 10 to 15 kts backing N 5 to 10 kts after
midnight. Waves 2 ft or less. Rain and a chance of thunderstorms.

$$

LMZ541-122200-
Rock Island Passage to Sturgeon Bay WI-
225 PM CDT Sun Apr 12 2026

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

.THIS AFTERNOON...S wind 10 to 15 kts increasing to 15 to 25 kts
early in the afternoon. Waves 6 to 10 ft. Patchy fog. light rain
likely and a chance of thunderstorms.
.TONIGHT...SW wind 15 to 25 kts decreasing to 10 to 15 kts after
midnight. Waves 6 to 10 ft. A chance of light rain in the
evening. patchy fog.
.MONDAY...W wind 10 to 15 kts veering NE 5 to 10 kts mid-day,
then veering E 10 to 15 kts 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...E wind 10 to 15 kts. Waves 2 to 4 ft. Rain and a
chance of thunderstorms.

$$

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

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

.THIS AFTERNOON...S wind 10 to 20 kts. Waves 5 to 8 ft. Patchy
fog. a chance of light rain and thunderstorms.
.TONIGHT...SW wind 15 to 25 kts. Waves 5 to 8 ft subsiding to
4 to 7 ft after midnight. A chance of light rain and a slight
chance of 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 light rain in
the afternoon.
.MONDAY NIGHT...SE wind 10 to 15 kts veering SW after midnight.
Waves 2 to 4 ft. Rain and a chance of thunderstorms.

$$

See Lake Michigan Open Lake Forecast for Tuesday through Thursday.

Wave height forecast is for ice free areas.