FZUS53 KGRB 200556

NSHGRB



Nearshore Marine Forecast

National Weather Service Green Bay WI

1256 AM CDT Mon Apr 20 2026



For waters within five nautical miles of shore on Lake Michigan



LMZ521-522-201000-

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-

1256 AM CDT Mon Apr 20 2026



.REST OF THE NIGHT...NW wind 5 to 10 kts backing W after

midnight. Waves 2 ft or less. Clear.

.MONDAY...W wind 5 to 10 kts backing S 10 to 20 kts in the late

morning and afternoon. Waves 1 to 3 ft. Sunny in the morning then

becoming partly cloudy. 

.MONDAY NIGHT...S wind 15 to 25 kts decreasing to 10 to 15 kts

after midnight. Waves 2 to 4 ft. Mostly cloudy in the evening

then becoming partly cloudy. A Small Craft Advisory may be

needed. 

.TUESDAY...SW wind 5 to 10 kts backing E early in the afternoon.

Waves 2 ft or less. Sunny. 



$$



LMZ541-201000-

Rock Island Passage to Sturgeon Bay WI-

1256 AM CDT Mon Apr 20 2026



.REST OF THE NIGHT...NW wind 5 to 10 kts backing W after

midnight. Waves 2 ft or less. Clear.

.MONDAY...W wind 5 to 10 kts backing SW 10 to 15 kts mid-day,

then backing S 15 to 25 kts early in the afternoon. Waves 2 ft or

less building to 4 to 7 ft in the afternoon. Sunny in the morning

then becoming partly sunny. A Small Craft Advisory may be needed.

.MONDAY NIGHT...S wind to 30 kts decreasing to 10 to 20 kts after

midnight. Waves 5 to 8 ft. Mostly cloudy in the evening then

becoming partly cloudy. 

.TUESDAY...S wind 10 to 15 kts backing SE 5 to 10 kts early in

the afternoon. Waves 4 to 7 ft subsiding to 3 to 5 ft in the

afternoon. Sunny. A Small Craft Advisory may be needed.  



$$



LMZ542-543-201000-

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

1256 AM CDT Mon Apr 20 2026



.REST OF THE NIGHT...NE wind 5 to 10 kts backing SW after

midnight. Waves 2 ft or less. Clear.

.MONDAY...SW wind 5 to 10 kts backing S 10 to 15 kts mid-day,

then increasing to 15 to 25 kts early in the afternoon. Waves

2 ft or less building to 4 to 7 ft in the afternoon. Sunny in the

morning then becoming partly cloudy. 

.MONDAY NIGHT...S wind to 30 kts decreasing to 10 to 20 kts after

midnight. Waves 4 to 7 ft. Mostly cloudy in the evening then

becoming partly cloudy. 

.TUESDAY...S wind 10 to 15 kts backing SE 5 to 10 kts early in

the afternoon. Waves 3 to 5 ft. Sunny. 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.