National Weather Service Marine Forecast FZUS53 KGRB

FZUS53 KGRB 220056
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
656 PM CST Wed Jan 21 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-220500
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
656 PM CST Wed Jan 21 2026

TONIGHT
W wind 10 to 20 kts. Waves 2 ft or less. A chance of light snow in the evening.

THURSDAY
W wind 15 to 25 kts. Waves 2 ft or less. A chance of flurries. A Small Craft Advisory may be needed.

THURSDAY NIGHT
NW wind to 30 kts. Waves 2 ft or less. A chance of flurries in the evening.

FRIDAY
NW wind 15 to 25 kts decreasing to 10 to 15 kts early in the afternoon. Waves 2 ft or less. Mostly sunny.

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LMZ541-220500
Rock Island Passage to Sturgeon Bay WI
656 PM CST Wed Jan 21 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CST THIS EVENING THROUGH FRIDAY MORNING

TONIGHT
W wind 15 to 25 kts. Waves 2 to 4 ft. A chance of light snow in the evening.

THURSDAY
W wind 15 to 25 kts. Waves 2 to 4 ft. A chance of flurries.

THURSDAY NIGHT
NW wind to 30 kts. Waves 2 to 4 ft. A chance of flurries in the evening.

FRIDAY
NW wind to 30 kts decreasing to 10 to 15 kts early in the afternoon. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. A chance of flurries in the morning.

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LMZ542-543-220500
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI
656 PM CST Wed Jan 21 2026

SMALL CRAFT ADVISORY IN EFFECT FROM 10 PM CST THIS EVENING THROUGH FRIDAY MORNING

TONIGHT
W wind 15 to 25 kts. Waves 2 to 4 ft. A chance of light snow in the evening.

THURSDAY
W wind 15 to 25 kts. Waves 1 to 3 ft. A chance of flurries.

THURSDAY NIGHT
NW wind to 30 kts. Waves 2 to 4 ft. A chance of flurries in the evening.

FRIDAY
NW wind to 30 kts. Waves 2 to 4 ft subsiding to 1 to 3 ft in the afternoon. A chance of flurries in the morning.

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See Lake Michigan Open Lake Forecast for Saturday through Monday.

Wave height forecast is for ice free areas.