FZUS53 KGRB 212040

NSHGRB



Nearshore Marine Forecast

National Weather Service Green Bay WI

340 PM CDT Sat Mar 21 2026



For waters within five nautical miles of shore on Lake Michigan



LMZ521-522-220400-

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-

340 PM CDT Sat Mar 21 2026



.LATE THIS AFTERNOON...S wind 10 to 15 kts. Waves 2 ft or less.

Partly cloudy. 

.TONIGHT...N wind 10 to 15 kts. Waves 2 ft or less. A chance of

light rain and light sleet after midnight. 

.SUNDAY...N wind 15 to 25 kts decreasing to 10 to 15 kts early in

the afternoon. Waves 2 ft or less. Mostly cloudy. A Small Craft

Advisory may be needed. 

.SUNDAY NIGHT...N wind 10 to 15 kts. Waves 2 ft or less. Mostly

clear. 

.MONDAY...NW wind 5 to 10 kts backing S early in the afternoon.

Waves 2 ft or less. Mostly sunny.  



$$



LMZ541-220400-

Rock Island Passage to Sturgeon Bay WI-

340 PM CDT Sat Mar 21 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...



.LATE THIS AFTERNOON...S wind 10 to 15 kts. Waves 3 to 5 ft.

Partly sunny. 

.TONIGHT...W wind 5 to 10 kts veering N 10 to 15 kts in the late

evening and overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft

after midnight. A chance of light rain and light sleet after

midnight. 

.SUNDAY...N wind 15 to 25 kts. Waves 2 to 4 ft. Mostly cloudy. A

Small Craft Advisory may be needed. 

.SUNDAY NIGHT...N wind 10 to 20 kts. Waves 2 to 4 ft subsiding to

2 ft or less after midnight. Partly cloudy. 

.MONDAY...NW wind 5 to 10 kts backing S early in the afternoon.

Waves 2 ft or less. Sunny. 



$$



LMZ542-543-220400-

Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-

340 PM CDT Sat Mar 21 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH

LATE SUNDAY NIGHT...



.LATE THIS AFTERNOON...S wind 10 to 20 kts. Waves 3 to 5 ft.

Partly cloudy. 

.TONIGHT...W wind 5 to 10 kts veering N 10 to 15 kts in the late

evening and overnight. Waves 3 to 5 ft subsiding to 1 to 3 ft

after midnight. A chance of light rain and light sleet after

midnight. 

.SUNDAY...N wind 15 to 25 kts. Waves 4 to 7 ft. Mostly cloudy. 

.SUNDAY NIGHT...N wind 15 to 25 kts decreasing to 10 to 15 kts in

the late evening and overnight. Waves 4 to 7 ft subsiding to 2 to

4 ft after midnight. Partly cloudy. 

.MONDAY...N wind 5 to 10 kts veering SE early in the afternoon.

Waves 1 to 3 ft. Sunny. 



$$



See Lake Michigan Open Lake Forecast for Tuesday through Thursday.



Wave height forecast is for ice free areas.