Nearshore Marine Forecast
Issued by NWS Green Bay, WI

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FZUS53 KGRB 130736
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
236 AM CDT Wed May 13 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-131000-
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-
236 AM CDT Wed May 13 2026

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

.REST OF THE NIGHT...NW wind 15 to 25 kts. Waves 3 to 5 ft.
Mostly cloudy.
.WEDNESDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in
the afternoon. Waves 2 to 4 ft. Mostly cloudy.
.WEDNESDAY NIGHT...N wind 5 to 10 kts. Waves 1 to 3 ft. Clear.
.THURSDAY...N wind 5 to 10 kts veering E mid-day, then veering SE
early in the afternoon. Waves 2 ft or less. Sunny.

$$

LMZ541-131000-
Rock Island Passage to Sturgeon Bay WI-
236 AM CDT Wed May 13 2026

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

.REST OF THE NIGHT...NW wind to 30 kts. Waves 3 to 5 ft. Cloudy.
.WEDNESDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in
the afternoon. Waves 3 to 5 ft. Mostly cloudy.
.WEDNESDAY NIGHT...N wind 10 to 15 kts. Waves 2 ft or less.
Clear.
.THURSDAY...N wind 5 to 10 kts veering E mid-day, then veering S
early in the afternoon. Waves 2 ft or less. Mostly sunny.

$$

LMZ542-543-131000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
236 AM CDT Wed May 13 2026

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

.REST OF THE NIGHT...NW wind 15 to 25 kts. Waves 2 to 4 ft.
Mostly cloudy.
.WEDNESDAY...NW wind 15 to 25 kts veering N 10 to 15 kts early in
the afternoon. Waves 2 to 4 ft. Mostly cloudy.
.WEDNESDAY NIGHT...NW wind 5 to 10 kts. Waves 2 ft or less.
Clear.
.THURSDAY...N wind 5 to 10 kts veering E mid-day, then veering SE
early in the afternoon. Waves 2 ft or less. Sunny.

$$

See Lake Michigan Open Lake Forecast for Friday through Sunday.

Wave height forecast is for ice free areas.