FZUS53 KGRB 232249
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
549 PM CDT Thu Apr 23 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-240400-
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-
549 PM CDT Thu Apr 23 2026

.LATE THIS AFTERNOON...SE wind 10 to 15 kts. Waves 2 ft or less.
Mostly sunny.
.TONIGHT...SE wind 10 to 15 kts. Waves 2 ft or less. Patchy dense
fog in the evening. a chance of showers in the evening. A chance
of thunderstorms. Rain showers likely after midnight.
.FRIDAY...SE wind 10 to 15 kts backing N early in the afternoon.
Waves 2 ft or less. Rain showers in the morning. A chance of
showers in the afternoon.
.FRIDAY NIGHT...N wind 5 to 10 kts. Waves 2 ft or less. Partly
cloudy.
.SATURDAY...N wind 5 to 10 kts veering NE in the late morning and
afternoon. Waves 2 ft or less. Partly cloudy in the morning then
clearing.

$$

LMZ541-240400-
Rock Island Passage to Sturgeon Bay WI-
549 PM CDT Thu Apr 23 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT FRIDAY...
...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...

.LATE THIS AFTERNOON...SE wind 10 to 15 kts. Waves 2 to 4 ft.
Patchy fog.
.TONIGHT...SE wind 10 to 15 kts. Waves 2 to 4 ft. Areas of dense
fog in the evening. a chance of showers and thunderstorms after
midnight.
.FRIDAY...SE wind 10 to 15 kts backing N early in the afternoon.
Waves 3 to 5 ft. Rain showers and a chance of thunderstorms.
.FRIDAY NIGHT...N wind 10 to 15 kts. Waves 2 to 4 ft subsiding to
1 to 3 ft after midnight. Mostly cloudy in the evening then
becoming partly cloudy.
.SATURDAY...N wind 5 to 10 kts veering NE early in the afternoon.
Waves 2 ft or less. Partly cloudy in the morning then clearing.

$$

LMZ542-543-240400-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
549 PM CDT Thu Apr 23 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 AM CDT FRIDAY...
...SMALL CRAFT ADVISORY IN EFFECT THROUGH FRIDAY EVENING...

.LATE THIS AFTERNOON...S wind 10 to 15 kts. Waves 2 to 4 ft.
Areas of dense fog.
.TONIGHT...S wind 10 to 20 kts. Waves 3 to 5 ft. Areas of dense
fog in the evening. a chance of showers and thunderstorms.
.FRIDAY...S wind 10 to 20 kts veering NW 10 to 15 kts early in
the afternoon. Waves 3 to 5 ft. Rain showers.
.FRIDAY NIGHT...N wind 10 to 15 kts. Waves 1 to 3 ft. Partly
cloudy.
.SATURDAY...N wind 10 to 15 kts veering NE early in the
afternoon. Waves 2 ft or less. Mostly sunny.

$$

See Lake Michigan Open Lake Forecast for Sunday through Tuesday.

Wave height forecast is for ice free areas.