FZUS53 KGRB 212104
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
404 PM CDT Wed May 21 2025

For waters within five nautical miles of the shore on Lake Michigan

LMZ521-522-220100-
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-
404 PM CDT Wed May 21 2025

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

.REST OF THIS AFTERNOON...NE wind 10 to 20 kts with gusts to
around 25 kts. A slight chance of rain showers. Waves 1 to 3 ft.
.TONIGHT...N wind 10 to 20 kts. Mostly cloudy. Waves 1 to 3 ft.
.THURSDAY...N wind 10 to 20 kts with gusts to around 25 kts.
Partly cloudy. Waves 1 to 3 ft. A Small Craft Advisory may be
needed.
.THURSDAY NIGHT...NW wind 10 to 20 kts. Partly cloudy in the
evening then becoming mostly cloudy. Waves 1 to 3 ft.
.FRIDAY...NW wind 10 to 20 kts veering N 5 to 10 kts in the
afternoon. Partly sunny. Waves 2 ft or less.

$$

LMZ541-220100-
Rock Island Passage to Sturgeon Bay WI-
404 PM CDT Wed May 21 2025

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

.REST OF THIS AFTERNOON...NE wind 10 to 20 kts with gusts to
around 25 kts. A chance of rain showers. Waves 2 to 4 ft.
.TONIGHT...N wind 10 to 20 kts with a few gusts to around 25 kts.
Mostly cloudy. Waves 1 to 3 ft. A Small Craft Advisory may be
needed.
.THURSDAY...N wind 15 to 25 kts. Partly cloudy in the morning
then becoming mostly sunny. Waves 1 to 3 ft.
.THURSDAY NIGHT...NW wind 10 to 20 kts. Partly cloudy in the
evening then becoming mostly cloudy. Waves 1 to 3 ft.
.FRIDAY...NW wind 10 to 15 kts. Partly cloudy. Waves 2 ft or
less.

$$

LMZ542-543-220100-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
404 PM CDT Wed May 21 2025

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

.REST OF THIS AFTERNOON...NE wind 10 to 20 kts with gusts to
around 25 kts. Light rain showers likely. Waves 3 to 5 ft.
.TONIGHT...N wind 10 to 20 kts. A slight chance of rain showers
in the evening. Waves 2 to 4 ft subsiding to 1 to 3 ft in the
late evening and overnight.
.THURSDAY...N wind 15 to 25 kts. Partly sunny. Waves 2 to 4 ft
subsiding to 1 to 3 ft late in the afternoon. A Small Craft
Advisory may be needed.
.THURSDAY NIGHT...N wind 5 to 10 kts backing NW 10 to 20 kts
after midnight. Partly cloudy. Waves 1 to 3 ft.
.FRIDAY...NW wind 10 to 20 kts veering N 5 to 10 kts in the
afternoon. Partly cloudy. Waves 2 ft or less.

$$

See Lake Michigan Open Lake Forecast for Saturday through Monday.