Station List

National Weather Service Marine Forecast FZUS53 KGRB

FZUS53 KGRB 120736
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
236 AM CDT Tue May 12 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-121000
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
236 AM CDT Tue May 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH WEDNESDAY AFTERNOON

REST OF THE NIGHT
SE wind 10 to 15 kts. Waves 2 ft or less. A chance of showers and a slight chance of thunderstorms.

TUESDAY
S wind 15 to 25 kts with gale force gusts to around 35 kts. Waves 3 to 5 ft. A chance of showers and a slight chance of thunderstorms.

TUESDAY NIGHT
W wind 10 to 15 kts veering NW 15 to 25 kts with gale force gusts to around 35 kts in the late evening and overnight. Waves 1 to 3 ft building to 3 to 5 ft after midnight. Mostly cloudy.

WEDNESDAY
NW wind 15 to 25 kts veering N 10 to 15 kts early in the afternoon. Gusts to 35 kts. Waves 3 to 5 ft. Mostly cloudy in the morning then becoming partly cloudy.

LMZ541-121000
Rock Island Passage to Sturgeon Bay WI
236 AM CDT Tue May 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH WEDNESDAY AFTERNOON

REST OF THE NIGHT
SE wind 10 to 15 kts. Waves 2 ft or less. A slight chance of showers and thunderstorms.

TUESDAY
S wind 10 to 20 kts increasing to to 30 kts in the late morning and afternoon. Gusts to 35 kts. Waves 5 to 8 ft building to 6 to 10 ft in the afternoon. A chance of showers and a slight chance of thunderstorms.

TUESDAY NIGHT
W wind 10 to 15 kts veering NW 15 to 25 kts with gale force gusts to around 35 kts in the late evening and overnight. Waves 6 to 10 ft. A chance of showers in the evening.

WEDNESDAY
NW wind 15 to 25 kts with gale force gusts to around 35 kts. Waves 3 to 5 ft. Mostly cloudy in the morning then clearing.

LMZ542-543-121000
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI
236 AM CDT Tue May 12 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH WEDNESDAY AFTERNOON

REST OF THE NIGHT
S wind 5 to 10 kts. Waves 2 ft or less. A chance of showers and a slight chance of thunderstorms.

TUESDAY
S wind to 30 kts with gale force gusts to around 35 kts. Waves 6 to 10 ft building to 8 to 12 ft in the afternoon. A chance of showers and a slight chance of thunderstorms.

TUESDAY NIGHT
W wind 10 to 15 kts veering NW 15 to 25 kts in the late evening and overnight. Waves 5 to 8 ft. A chance of showers in the evening.

WEDNESDAY
NW wind 15 to 25 kts veering N 10 to 15 kts early in the afternoon. Waves 2 to 4 ft. Partly cloudy.

See Lake Michigan Open Lake Forecast for Thursday through Saturday.

Wave height forecast is for ice free areas.