508
FZUS53 KGRB 211140
NSHGRB
NEARSHORE MARINE FORECAST
NATIONAL WEATHER SERVICE GREEN BAY WI
639 AM CDT SAT MAR 21 2026
FOR WATERS WITHIN FIVE NAUTICAL MILES OF SHORE ON LAKE MICHIGAN
LMZ521-522-211600-
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-
639 AM CDT SAT MAR 21 2026
TODAY
SE WIND 10 TO 15 KTS. WAVES 2 FT OR LESS. MOSTLY CLOUDY.
TONIGHT
NE WIND 5 TO 10 KTS BACKING N 10 TO 15 KTS IN THE LATE
EVENING AND OVERNIGHT. WAVES 2 FT OR LESS. PATCHY DENSE FOG IN
THE EVENING. A CHANCE OF LIGHT RAIN AFTER MIDNIGHT.
SUNDAY
N WIND 10 TO 20 KTS. WAVES 2 FT OR LESS. MOSTLY CLOUDY.
SUNDAY NIGHT
N WIND 10 TO 15 KTS. WAVES 2 FT OR LESS. PARTLY
CLOUDY.
LMZ541-211600-
ROCK ISLAND PASSAGE TO STURGEON BAY WI-
639 AM CDT SAT MAR 21 2026
TODAY
S WIND 10 TO 15 KTS. WAVES 1 TO 3 FT BUILDING TO 3 TO
5 FT IN THE AFTERNOON. MOSTLY CLOUDY.
TONIGHT
S WIND 5 TO 10 KTS VEERING N 10 TO 15 KTS IN THE LATE
EVENING AND OVERNIGHT. WAVES 3 TO 5 FT SUBSIDING TO 2 TO 4 FT
AFTER MIDNIGHT. A CHANCE OF LIGHT RAIN AFTER MIDNIGHT.
SUNDAY
N WIND 15 TO 25 KTS. WAVES 2 TO 4 FT. MOSTLY CLOUDY. A
SMALL CRAFT ADVISORY MAY BE NEEDED.
SUNDAY NIGHT
N WIND 10 TO 20 KTS DECREASING TO 5 TO 10 KTS
AFTER MIDNIGHT. WAVES 2 TO 4 FT. PARTLY CLOUDY.
LMZ542-543-211600-
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-
639 AM CDT SAT MAR 21 2026
TODAY
SE WIND 10 TO 15 KTS VEERING S 15 TO 25 KTS MID-DAY,
THEN DECREASING TO 10 TO 15 KTS EARLY IN THE AFTERNOON. WAVES
1 TO 3 FT BUILDING TO 3 TO 5 FT IN THE AFTERNOON. MOSTLY CLOUDY.
TONIGHT
W WIND 10 TO 15 KTS VEERING N IN THE LATE EVENING AND
OVERNIGHT. WAVES 3 TO 5 FT SUBSIDING TO 1 TO 3 FT AFTER MIDNIGHT.
A CHANCE OF LIGHT RAIN AFTER MIDNIGHT. A SMALL CRAFT ADVISORY MAY
BE NEEDED.
SUNDAY
N WIND 15 TO 25 KTS. WAVES 4 TO 7 FT. MOSTLY CLOUDY.
SUNDAY NIGHT
N WIND 15 TO 25 KTS DECREASING TO 10 TO 15 KTS
AFTER MIDNIGHT. WAVES 4 TO 7 FT SUBSIDING TO 2 TO 4 FT AFTER
MIDNIGHT. PARTLY CLOUDY.
SEE LAKE MICHIGAN OPEN LAKE FORECAST FOR MONDAY THROUGH WEDNESDAY.
WAVE HEIGHT FORECAST IS FOR ICE FREE AREAS.
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