FZUS53 KGRB 192256
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
556 PM CDT Tue May 19 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-200400-
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-
556 PM CDT Tue May 19 2026

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

.LATE THIS AFTERNOON...NW wind 10 to 15 kts. Waves 2 ft or less.
Partly sunny. 
.TONIGHT...NW wind 10 to 15 kts. Waves 2 ft or less. Mostly
cloudy. 
.WEDNESDAY...N wind 5 to 10 kts veering E early in the afternoon.
Waves 2 ft or less. Mostly sunny. 
.WEDNESDAY NIGHT...E wind 5 to 10 kts backing NE after midnight.
Waves 2 ft or less. Partly cloudy. 
.THURSDAY...E wind 5 to 10 kts. Waves 2 ft or less. Partly
cloudy.  

$$

LMZ541-200400-
Rock Island Passage to Sturgeon Bay WI-
556 PM CDT Tue May 19 2026

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

.LATE THIS AFTERNOON...NW wind 5 to 10 kts. Waves 3 to 5 ft.
Partly sunny. 
.TONIGHT...NW wind 10 to 15 kts. Waves 2 to 4 ft subsiding to
1 to 3 ft after midnight. Mostly cloudy. 
.WEDNESDAY...N wind 5 to 10 kts veering E early in the afternoon.
Waves 2 ft or less. Mostly sunny. 
.WEDNESDAY NIGHT...E wind 5 to 10 kts backing NE in the late
evening and overnight. Waves 2 ft or less. Partly cloudy. 
.THURSDAY...NE wind 5 to 10 kts. Waves 2 ft or less. Partly
cloudy.  

$$

LMZ542-543-200400-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
556 PM CDT Tue May 19 2026

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

.LATE THIS AFTERNOON...W wind 15 to 25 kts. Waves 2 to 4 ft.
Partly cloudy. 
.TONIGHT...NW wind 10 to 15 kts veering N after midnight. Waves
1 to 3 ft. Mostly cloudy. 
.WEDNESDAY...N wind 10 to 15 kts veering NE in the late morning
and afternoon. Waves 1 to 3 ft. Mostly sunny. 
.WEDNESDAY NIGHT...NE wind 10 to 15 kts. Waves 2 ft or less.
Partly cloudy. 
.THURSDAY...NE wind 10 to 15 kts. Waves 2 ft or less. Partly
sunny.  

$$

See Lake Michigan Open Lake Forecast for Friday through Sunday.

Wave height forecast is for ice free areas.