661
FZUS53 KGRB 210834
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
334 AM CDT Tue Jul 21 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-211600-
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-
334 AM CDT Tue Jul 21 2026

...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM CDT THIS MORNING
THROUGH LATE TONIGHT...

.EARLY THIS MORNING...W wind 10 to 15 kts. Waves 2 ft or less.
Mostly clear.
.TODAY...NW wind 10 to 15 kts increasing to 15 to 25 kts in the
late morning and afternoon. Waves 1 to 3 ft building to 3 to 5 ft
in the afternoon. A chance of showers and a slight chance of
thunderstorms.
.TONIGHT...N wind 15 to 25 kts backing NW 10 to 15 kts after
midnight. Waves 4 to 7 ft subsiding to 2 to 4 ft after midnight.
Partly cloudy in the evening then clearing.
.WEDNESDAY...N wind 10 to 15 kts. Waves 1 to 3 ft. Mostly sunny.
.WEDNESDAY NIGHT...E wind 5 to 10 kts veering W in the late
evening and overnight. Waves 2 ft or less. Clear.

$$

LMZ541>543-211600-
Rock Island Passage to Sturgeon Bay WI-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
334 AM CDT Tue Jul 21 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.EARLY THIS MORNING...W wind 10 to 15 kts. Waves 2 to 4 ft.
Mostly clear.
.TODAY...NW wind 15 to 25 kts veering N early in the afternoon.
Waves 3 to 5 ft. A chance of showers. A slight chance of
thunderstorms in the afternoon.
.TONIGHT...N wind 15 to 25 kts. Waves 3 to 5 ft. Mostly clear.
.WEDNESDAY...N wind 10 to 20 kts decreasing to 5 to 10 kts early
in the afternoon. Waves 1 to 3 ft. Mostly sunny.
.WEDNESDAY NIGHT...SW wind 5 to 10 kts veering W after midnight.
Waves 2 ft or less. Mostly clear.

$$

See Lake Michigan Open Lake Forecast for Thursday through Saturday.