FZUS53 KGRB 312101
NSHGRB

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

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-010400-
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-
401 PM CDT Tue Mar 31 2026

.LATE THIS AFTERNOON...N wind 10 to 15 kts. Waves 2 ft or less.
Partly sunny.
.TONIGHT...N wind 10 to 15 kts. Waves 1 to 3 ft. 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...E wind 15 to 25 kts. Waves 2 to 4 ft building
to 4 to 7 ft after midnight. A chance of light snow and sleet in
the evening, then freezing rain, sleet, light snow and rain after
midnight. A Small Craft Advisory may be needed.
.THURSDAY...E wind 15 to 25 kts with gale force gusts to around
35 kts. Waves 4 to 7 ft. Freezing rain in the morning. Rain. A
chance of thunderstorms in the afternoon.

$$

LMZ541-010400-
Rock Island Passage to Sturgeon Bay WI-
401 PM CDT Tue Mar 31 2026

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

.LATE THIS AFTERNOON...N wind 10 to 15 kts. Waves 2 to 4 ft.
Partly sunny.
.TONIGHT...N wind 10 to 20 kts. Waves 2 to 4 ft. Partly cloudy in
the evening then becoming mostly cloudy.
.WEDNESDAY...NE wind 15 to 25 kts. Waves 2 to 4 ft building to
3 to 5 ft in the afternoon. 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 light snow, sleet, rain and freezing rain after midnight.
.THURSDAY...E wind to 30 kts with gale force gusts to around
35 kts. Waves 6 to 10 ft. Freezing rain in the morning. Rain.

$$

LMZ542-543-010400-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
401 PM CDT Tue Mar 31 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM CDT WEDNESDAY THROUGH
FRIDAY MORNING...

.LATE THIS AFTERNOON...N wind 10 to 15 kts. Waves 2 to 4 ft.
Partly sunny.
.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. Mostly cloudy.
.WEDNESDAY NIGHT...E wind to 30 kts. Waves 5 to 8 ft. A chance of
rain in the evening, then rain and sleet after midnight.
.THURSDAY...E wind to 30 kts veering SE 15 to 25 kts early in the
afternoon. Waves 6 to 10 ft. Rain and a chance of thunderstorms.

$$

See Lake Michigan Open Lake Forecast for Friday through Sunday.

Wave height forecast is for ice free areas.