FZUS53 KGRB 160252
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
951 PM CDT Fri May 15 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-161000-
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-
952 PM CDT Fri May 15 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT CDT TONIGHT...

.REST OF TONIGHT...S wind 10 to 20 kts. Waves 2 to 4 ft. A slight
chance of showers and thunderstorms.
.SATURDAY...W wind 10 to 15 kts. Waves 2 ft or less. Partly
cloudy in the morning then clearing.
.SATURDAY NIGHT...N wind 10 to 15 kts veering NE in the late
evening and overnight. Waves 2 ft or less. Clear in the evening
then becoming partly cloudy.
.SUNDAY...E wind 10 to 15 kts. Waves 1 to 3 ft. A chance of
showers.

$$

LMZ541-161000-
Rock Island Passage to Sturgeon Bay WI-
952 PM CDT Fri May 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TONIGHT...S wind 15 to 25 kts decreasing to 10 to 15 kts
after midnight. Waves 6 to 10 ft subsiding to 5 to 8 ft after
midnight. A chance of showers and a slight chance of
thunderstorms after midnight.
.SATURDAY...SW wind 10 to 15 kts. Waves 4 to 7 ft. Partly cloudy
in the morning then clearing.
.SATURDAY NIGHT...NE wind 10 to 15 kts. Waves 1 to 3 ft. Clear in
the evening then becoming partly cloudy.
.SUNDAY...E wind 10 to 20 kts. Waves 1 to 3 ft building to 2 to
4 ft in the afternoon. A chance of showers in the afternoon.

$$

LMZ542-543-161000-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
952 PM CDT Fri May 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING...

.REST OF TONIGHT...S wind 15 to 25 kts decreasing to 10 to 15 kts
after midnight. Waves 5 to 8 ft subsiding to 4 to 7 ft after
midnight. A chance of showers and a slight chance of
thunderstorms 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 in the morning then
clearing.
.SATURDAY NIGHT...NW wind 5 to 10 kts veering NE 10 to 15 kts in
the late evening and overnight. Waves 1 to 3 ft. Mostly clear.
.SUNDAY...E wind 10 to 20 kts increasing to 15 to 25 kts early in
the afternoon. Waves 2 to 4 ft building to 3 to 5 ft in the
afternoon. A chance of showers in the morning, then showers
likely in the afternoon. A Small Craft Advisory may be needed.

$$

See Lake Michigan Open Lake Forecast for Monday through Wednesday.

Wave height forecast is for ice free areas.