FZUS53 KGRB 170340
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
1040 PM CDT Thu Apr 16 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-171000-
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-
1040 PM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT FRIDAY...

.REST OF TONIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Areas
of dense fog.
.FRIDAY...S wind 5 to 10 kts increasing to 15 to 25 kts in the
late morning and afternoon. Waves 2 to 4 ft. Patchy fog in the
morning. a chance of showers and a slight chance of thunderstorms
in the afternoon. A Small Craft Advisory may be needed.
.FRIDAY NIGHT...S wind 15 to 25 kts veering W 10 to 20 kts after
midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight.
Rain showers and a chance of thunderstorms in the evening.
.SATURDAY...W wind 15 to 25 kts. Waves 1 to 3 ft. Partly cloudy.

$$

LMZ541-171000-
Rock Island Passage to Sturgeon Bay WI-
1040 PM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT FRIDAY...

.REST OF TONIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Areas
of fog late in the evening, then widespread dense fog after
midnight.
.FRIDAY...S wind 15 to 25 kts. Waves 1 to 3 ft building to 3 to
5 ft in the afternoon. Areas of dense fog in the morning.
.FRIDAY NIGHT...S wind 15 to 25 kts veering W after midnight.
Waves 4 to 7 ft. Rain showers and a chance of thunderstorms in
the evening, then a chance of showers after midnight.
.SATURDAY...W wind 10 to 15 kts. Waves 3 to 5 ft subsiding to
1 to 3 ft in the afternoon. Partly cloudy. A Small Craft Advisory
may be needed.

$$

LMZ542-543-171000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
1040 PM CDT Thu Apr 16 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT FRIDAY...

.REST OF TONIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Areas
of dense fog late in the evening, then widespread dense fog after
midnight.
.FRIDAY...S wind 10 to 15 kts increasing to to 30 kts in the late
morning and afternoon. Waves 1 to 3 ft building to 4 to 7 ft in
the afternoon. Areas of dense fog in the morning. a slight chance
of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...S wind to 30 kts veering W 15 to 25 kts after
midnight. Waves 4 to 7 ft. Rain showers and a chance of
thunderstorms in the evening, then a chance of showers after
midnight.
.SATURDAY...W wind 15 to 25 kts. Waves 3 to 5 ft subsiding to
1 to 3 ft in the afternoon. Partly cloudy.

$$

See Lake Michigan Open Lake Forecast for Sunday through Tuesday.

Wave height forecast is for ice free areas.