FZUS53 KGRB 061341
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
841 AM CDT Mon Apr 6 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-061600-
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-
841 AM CDT Mon Apr 6 2026

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

.TODAY...NW wind 10 to 15 kts increasing to 15 to 25 kts with
gale force gusts to around 35 kts in the late morning and
afternoon. Waves 1 to 3 ft building to 3 to 5 ft in the
afternoon. Isolated showers in the morning. Scattered snow
showers.
.TONIGHT...N wind 15 to 25 kts backing NW 10 to 15 kts in the
late evening and overnight. Waves 3 to 5 ft subsiding to 1 to
3 ft after midnight. Scattered snow showers in the evening.
.TUESDAY...NW wind 5 to 10 kts backing SW in the late morning and
afternoon. Waves 2 ft or less. Sunny.
.TUESDAY NIGHT...S wind 10 to 15 kts. Waves 1 to 3 ft. A chance
of snow showers after midnight.

$$

LMZ541-061600-
Rock Island Passage to Sturgeon Bay WI-
841 AM CDT Mon Apr 6 2026

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

.TODAY...NW wind 10 to 15 kts increasing to to 30 kts with gale
force gusts to around 35 kts in the late morning and afternoon.
Waves 1 to 3 ft building to 3 to 5 ft in the afternoon. Scattered
showers in the morning. Scattered snow showers.
.TONIGHT...N wind 15 to 25 kts backing NW 10 to 15 kts in the
late evening and overnight. Waves 3 to 5 ft subsiding to 1 to
3 ft after midnight. Scattered flurries in the evening.
.TUESDAY...NW wind 5 to 10 kts backing S early in the afternoon.
Waves 2 ft or less. Sunny.
.TUESDAY NIGHT...S wind 10 to 15 kts increasing to 15 to 25 kts
after midnight. Waves 1 to 3 ft building to 4 to 7 ft after
midnight. Mostly clear in the evening then becoming mostly
cloudy. A Small Craft Advisory may be needed.

$$

LMZ542-543-061600-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
841 AM CDT Mon Apr 6 2026

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

.TODAY...NW wind 10 to 15 kts increasing to to 30 kts in the late
morning and afternoon. Waves 1 to 3 ft building to 3 to 5 ft in
the afternoon. Isolated showers in the morning, then scattered
rain and snow showers in the afternoon.
.TONIGHT...N wind 15 to 25 kts decreasing to 10 to 15 kts after
midnight. Waves 4 to 7 ft subsiding to 3 to 5 ft after midnight.
Scattered snow showers in the evening.
.TUESDAY...NW wind 5 to 10 kts backing S 10 to 15 kts in the late
morning and afternoon. Waves 2 ft or less. Sunny.
.TUESDAY NIGHT...S wind 15 to 25 kts. Waves 1 to 3 ft building to
4 to 7 ft after midnight. A chance of snow showers after
midnight. A Small Craft Advisory may be needed.

$$

See Lake Michigan Open Lake Forecast for Wednesday through Friday.

Wave height forecast is for ice free areas.