Station List

National Weather Service Marine Forecast FZUS53 KGRB

FZUS53 KGRB 180235
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
935 PM CDT Fri Apr 17 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ522-181000
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI
935 PM CDT Fri Apr 17 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY

REST OF TONIGHT
S wind 15 to 25 kts veering SW 10 to 15 kts, then veering NW 10 to 20 kts after midnight. Waves 2 to 4 ft. Patchy fog. a chance of thunderstorms early in the evening. Rain showers likely.

SATURDAY
W wind 15 to 25 kts. Waves 1 to 3 ft. Partly cloudy. A Small Craft Advisory may be needed.

SATURDAY NIGHT
W wind 10 to 15 kts. Waves 1 to 3 ft. Mostly clear.

SUNDAY
NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy.

LMZ521-181000
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
935 PM CDT Fri Apr 17 2026

DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY

REST OF TONIGHT
S wind 15 to 25 kts veering NW 10 to 20 kts after midnight. Waves 2 to 4 ft subsiding to 1 to 3 ft after midnight. Patchy dense fog. a chance of thunderstorms early in the evening. Rain showers likely.

SATURDAY
W wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy.

SATURDAY NIGHT
W wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy.

SUNDAY
NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy.

LMZ541-181000
Rock Island Passage to Sturgeon Bay WI
935 PM CDT Fri Apr 17 2026

DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY

SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING

REST OF TONIGHT
S wind 15 to 25 kts veering NW after midnight. Waves 4 to 7 ft. Patchy dense fog. a chance of thunderstorms early in the evening. Rain showers likely.

SATURDAY
NW wind 15 to 25 kts backing W 10 to 15 kts in the late morning and afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy.

SATURDAY NIGHT
W wind 10 to 15 kts. Waves 1 to 3 ft. Partly cloudy.

SUNDAY
NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy.

LMZ542-543-181000
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI
935 PM CDT Fri Apr 17 2026

DENSE FOG ADVISORY IN EFFECT UNTIL 4 AM CDT SATURDAY

SMALL CRAFT ADVISORY IN EFFECT THROUGH SATURDAY MORNING

REST OF TONIGHT
S wind 15 to 25 kts veering W after midnight. Gusts to 35 kts. Waves 4 to 7 ft. Patchy dense fog. a chance of thunderstorms early in the evening. Rain showers.

SATURDAY
W wind 15 to 25 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. Partly cloudy in the morning then clearing.

SATURDAY NIGHT
W wind 15 to 25 kts decreasing to 10 to 15 kts in the late evening and overnight. Waves 1 to 3 ft. Mostly clear. A Small Craft Advisory may be needed.

SUNDAY
NW wind 10 to 15 kts veering N early in the afternoon. Waves 2 ft or less. Partly cloudy.

See Lake Michigan Open Lake Forecast for Monday through Wednesday.

Wave height forecast is for ice free areas.