FZUS53 KGRB 180625
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
124 AM CDT Mon May 18 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-181000-
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-
124 AM CDT Mon May 18 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.REST OF THE NIGHT...E wind 5 to 10 kts veering SE 10 to 15 kts
after midnight. Waves 1 to 3 ft. Patchy dense fog. a chance of
showers and thunderstorms. 
.MONDAY...S wind 10 to 15 kts. Waves 1 to 3 ft. Patchy dense fog
in the morning. a chance of showers and a slight chance of
thunderstorms. 
.MONDAY NIGHT...S wind 10 to 15 kts. Waves 2 ft or less. Patchy
fog. a chance of showers and thunderstorms. 
.TUESDAY...SW wind 15 to 25 kts veering NW early in the
afternoon. Waves 1 to 3 ft. A chance of showers in the morning. A
Small Craft Advisory may be needed.  

$$

LMZ541-181000-
Rock Island Passage to Sturgeon Bay WI-
124 AM CDT Mon May 18 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.REST OF THE NIGHT...SE wind 10 to 15 kts veering S after
midnight. Waves 3 to 5 ft. Areas of dense fog. a chance of
showers and thunderstorms. 
.MONDAY...S wind 15 to 25 kts decreasing to 10 to 15 kts early in
the afternoon. Waves 4 to 7 ft. Patchy fog in the morning. a
chance of showers and a slight chance of thunderstorms. 
.MONDAY NIGHT...S wind 10 to 15 kts increasing to 15 to 25 kts
after midnight. Waves 5 to 8 ft. Patchy fog. a chance of showers
in the evening. A chance of thunderstorms. Rain showers likely
after midnight. 
.TUESDAY...SW wind 15 to 25 kts veering NW early in the
afternoon. Waves 5 to 8 ft. A chance of showers in the morning.  

$$

LMZ542-543-181000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
124 AM CDT Mon May 18 2026

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CDT THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TUESDAY NIGHT...

.REST OF THE NIGHT...SE wind 5 to 10 kts veering S 10 to 15 kts
after midnight. Waves 3 to 5 ft. Areas of dense fog. a slight
chance of showers and thunderstorms. 
.MONDAY...S wind 15 to 25 kts decreasing to 10 to 15 kts early in
the afternoon. Waves 4 to 7 ft. Patchy dense fog in the morning.
a chance of showers and a slight chance of thunderstorms. 
.MONDAY NIGHT...S wind 10 to 15 kts increasing to 15 to 25 kts in
the late evening and overnight. Waves 4 to 7 ft. Patchy fog. a
chance of showers and thunderstorms. 
.TUESDAY...SW wind 15 to 25 kts veering W in the late morning and
afternoon. Waves 5 to 8 ft subsiding to 4 to 7 ft in the
afternoon. A chance of showers in the morning.  

$$

See Lake Michigan Open Lake Forecast for Wednesday through Friday.

Wave height forecast is for ice free areas.