FZUS53 KGRB 311717
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
1217 PM CDT Tue Mar 31 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-312200-
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-
1217 PM CDT Tue Mar 31 2026

.THIS AFTERNOON...N wind 10 to 15 kts. Waves 2 ft or less. A
chance of rain.
.TONIGHT...N wind 10 to 15 kts. Waves 2 ft or less. Mostly cloudy
in the evening then becoming partly cloudy.
.WEDNESDAY...NE wind 10 to 20 kts. Waves 1 to 3 ft. Partly sunny.
.WEDNESDAY NIGHT...NE wind 15 to 25 kts. Waves 2 to 4 ft building
to 3 to 5 ft after midnight. A chance of light snow in the
evening. A chance of light sleet. Snow likely after midnight. A
Small Craft Advisory may be needed.

$$

LMZ541-312200-
Rock Island Passage to Sturgeon Bay WI-
1217 PM CDT Tue Mar 31 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM WEDNESDAY MORNING THROUGH
FRIDAY MORNING...

.THIS AFTERNOON...N wind 10 to 15 kts. Waves 3 to 5 ft. Rain
likely late in the morning, then a slight chance of light rain in
the afternoon.
.TONIGHT...N wind 10 to 20 kts. Waves 1 to 3 ft building to 2 to
4 ft after midnight. Partly cloudy in the evening then becoming
mostly cloudy.
.WEDNESDAY...NE wind 15 to 25 kts. Waves 3 to 5 ft. Partly sunny.
.WEDNESDAY NIGHT...E wind to 30 kts. Waves 4 to 7 ft building to
5 to 8 ft after midnight. A chance of light snow in the evening,
then snow likely after midnight.

$$

LMZ542-543-312200-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
1217 PM CDT Tue Mar 31 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CDT THIS EVENING
THROUGH LATE THURSDAY NIGHT...

.THIS AFTERNOON...N wind 10 to 15 kts. Waves 2 to 4 ft. Rain
likely late in the morning. A chance of thunderstorms. A chance
of rain in the afternoon.
.TONIGHT...N wind 15 to 25 kts. Waves 2 to 4 ft building to 3 to
5 ft after midnight. Partly cloudy in the evening then becoming
mostly cloudy.
.WEDNESDAY...NE wind to 30 kts. Waves 4 to 7 ft building to 5 to
8 ft in the afternoon. Mostly cloudy.
.WEDNESDAY NIGHT...NE wind to 30 kts. Waves 5 to 8 ft. A chance
of light rain and light sleet in the evening, then rain, light
snow and freezing rain after midnight.

$$

See Lake Michigan Open Lake Forecast for Thursday through Saturday.

Wave height forecast is for ice free areas.