FZUS53 KGRB 211623
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
1123 AM CDT Thu May 21 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-212200-
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-
1123 AM CDT Thu May 21 2026

.THIS AFTERNOON...NE wind 10 to 15 kts. Waves 2 ft or less.
Partly sunny.
.TONIGHT...E wind 5 to 10 kts. Waves 2 ft or less. Partly cloudy
in the evening then becoming mostly cloudy.
.FRIDAY...NE wind 10 to 20 kts. Waves 2 ft or less building to
2 to 4 ft in the afternoon. Partly sunny.
.FRIDAY NIGHT...E wind 10 to 20 kts. Waves 2 to 4 ft subsiding to
1 to 3 ft after midnight. Rain showers likely after midnight.

$$

LMZ541-212200-
Rock Island Passage to Sturgeon Bay WI-
1123 AM CDT Thu May 21 2026

.THIS AFTERNOON...NE wind 10 to 15 kts. Waves 2 ft or less.
Partly cloudy.
.TONIGHT...NE wind 10 to 15 kts veering E in the late evening and
overnight. Waves 1 to 3 ft. Mostly clear in the evening then
becoming mostly cloudy.
.FRIDAY...NE wind 10 to 15 kts increasing to 15 to 25 kts early
in the afternoon. Waves 1 to 3 ft building to 3 to 5 ft in the
afternoon. Partly sunny. A Small Craft Advisory may be needed.
.FRIDAY NIGHT...E wind 15 to 25 kts. Waves 4 to 7 ft subsiding to
2 to 4 ft after midnight. Rain showers likely after midnight.

$$

LMZ542-543-212200-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
1123 AM CDT Thu May 21 2026

.THIS AFTERNOON...NE wind 10 to 15 kts. Waves 1 to 3 ft. Partly
sunny.
.TONIGHT...NE wind 10 to 15 kts veering E in the late evening and
overnight. Waves 1 to 3 ft. Partly cloudy in the evening then
becoming mostly cloudy.
.FRIDAY...NE wind 10 to 20 kts. Waves 1 to 3 ft building to 2 to
4 ft in the afternoon. Partly sunny.
.FRIDAY NIGHT...NE wind 15 to 25 kts. Waves 3 to 5 ft. Rain
showers likely after midnight. A Small Craft Advisory may be
needed.

$$

See Lake Michigan Open Lake Forecast for Saturday through Monday.

Wave height forecast is for ice free areas.