FZUS53 KGRB 041318

NSHGRB



Nearshore Marine Forecast

National Weather Service Green Bay WI

817 AM CDT Mon May 4 2026



For waters within five nautical miles of shore on Lake Michigan



LMZ521-522-041600-

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-

817 AM CDT Mon May 4 2026



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



.TODAY...SW wind 15 to 25 kts veering W 10 to 20 kts early in the

afternoon. Waves 1 to 3 ft. A slight chance of showers in the

afternoon. 

.TONIGHT...NW wind 10 to 15 kts. Waves 2 ft or less. Partly

cloudy. 

.TUESDAY...W wind 10 to 15 kts. Waves 2 ft or less. Mostly sunny

in the morning then becoming partly cloudy. 

.TUESDAY NIGHT...N wind 5 to 10 kts. Waves 2 ft or less. Mostly

cloudy in the evening then becoming partly cloudy.  



$$



LMZ541-041600-

Rock Island Passage to Sturgeon Bay WI-

817 AM CDT Mon May 4 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...



.TODAY...SW wind 15 to 25 kts veering W 10 to 15 kts early in the

afternoon. Waves 4 to 7 ft. A slight chance of showers in the

afternoon. 

.TONIGHT...NW wind 10 to 15 kts. Waves 3 to 5 ft subsiding to

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

becoming mostly clear. 

.TUESDAY...W wind 10 to 15 kts backing SW 5 to 10 kts early in

the afternoon. Waves 2 ft or less. Mostly sunny in the morning

then becoming partly cloudy. 

.TUESDAY NIGHT...NW wind 5 to 10 kts veering N, then backing NW

after midnight. Waves 2 ft or less. Mostly cloudy in the evening

then becoming partly cloudy.  



$$



LMZ543-041600-

Two Rivers to Sheboygan WI-

817 AM CDT Mon May 4 2026



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



.TODAY...SW wind 15 to 25 kts. Waves 4 to 7 ft. A chance of

showers and a slight chance of thunderstorms in the afternoon. 

.TONIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to

1 to 3 ft after midnight. A slight chance of showers in the

evening. 

.TUESDAY...W wind 10 to 15 kts. Waves 2 ft or less. Partly sunny.

.TUESDAY NIGHT...NW wind 5 to 10 kts veering N after midnight.

Waves 2 ft or less. Partly cloudy.  



$$



LMZ542-041600-

Sturgeon Bay to Two Rivers WI-

817 AM CDT Mon May 4 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...



.TODAY...SW wind 15 to 25 kts veering W early in the afternoon.

Waves 4 to 7 ft. A slight chance of showers and thunderstorms in

the afternoon. 

.TONIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to

1 to 3 ft after midnight. Partly cloudy. 

.TUESDAY...W wind 10 to 15 kts. Waves 2 ft or less. Partly

cloudy. 

.TUESDAY NIGHT...W wind 5 to 10 kts veering N in the late evening

and overnight. Waves 2 ft or less. Mostly cloudy.  



$$



See Lake Michigan Open Lake Forecast for Wednesday through Friday.



Wave height forecast is for ice free areas.