FZUS53 KGRB 180851
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
351 AM CDT Thu Jun 18 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-181600-
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-
351 AM CDT Thu Jun 18 2026

.EARLY THIS MORNING...NW wind 10 to 20 kts. Waves 2 to 4 ft. A
chance of showers.
.TODAY...NW wind 10 to 15 kts backing W 5 to 10 kts early in the
afternoon. Waves 1 to 3 ft. A slight chance of showers and
thunderstorms in the afternoon.
.TONIGHT...W wind 10 to 15 kts. Waves 2 ft or less. Mostly clear.
.FRIDAY...W wind 5 to 10 kts. Waves 2 ft or less. Mostly sunny.
.FRIDAY NIGHT...W wind 5 to 10 kts. Waves 2 ft or less. A chance
of showers.

$$

LMZ541-181600-
Rock Island Passage to Sturgeon Bay WI-
351 AM CDT Thu Jun 18 2026

.EARLY THIS MORNING...N wind 10 to 20 kts. Waves 2 to 4 ft. A
chance of showers.
.TODAY...NW wind 10 to 15 kts backing SW 5 to 10 kts early in the
afternoon. Waves 2 to 4 ft subsiding to 2 ft or less in the
afternoon. A slight chance of showers.
.TONIGHT...W wind 5 to 10 kts veering NW 10 to 15 kts in the late
evening and overnight. Waves 2 ft or less. Mostly clear.
.FRIDAY...W wind 5 to 10 kts backing SW early in the afternoon.
Waves 2 ft or less. Mostly sunny.
.FRIDAY NIGHT...SW wind 5 to 10 kts veering W after midnight.
Waves 2 ft or less. Mostly cloudy.

$$

LMZ542-543-181600-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
351 AM CDT Thu Jun 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT EARLY THIS
MORNING...

.EARLY THIS MORNING...NW wind 10 to 20 kts. Waves 3 to 5 ft.
Patchy fog. a slight chance of showers.
.TODAY...NW wind 10 to 15 kts backing SW early in the afternoon.
Waves 2 to 4 ft subsiding to 2 ft or less in the afternoon. A
slight chance of showers in the afternoon.
.TONIGHT...W wind 10 to 15 kts. Waves 2 ft or less. Mostly clear.
.FRIDAY...NW wind 10 to 15 kts backing W early in the afternoon.
Waves 2 ft or less. Sunny.
.FRIDAY NIGHT...SW wind 5 to 10 kts. Waves 2 ft or less. A chance
of showers.

$$

See Lake Michigan Open Lake Forecast for Saturday through Monday.