065
WHUS73 KGRB 180845
MWWGRB
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
345 AM CDT MON MAY 18 2026
LMZ521-522-181645-
/O.CAN.KGRB.SC.Y.0052.000000T0000Z-260519T0000Z/
/O.CON.KGRB.MF.Y.0006.000000T0000Z-260518T1400Z/
/O.NEW.KGRB.SC.Y.0053.260519T1500Z-260520T0000Z/
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-
345 AM CDT MON MAY 18 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM TO 7 PM CDT
TUESDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO LESS THAN 1 NM. FOR THE SMALL CRAFT ADVISORY, WEST
WINDS 15 TO 20 KTS WITH GUSTS UP TO 25 KTS AND WAVES 2 TO 4 FT
EXPECTED.
* WHERE...CENTRAL AND SOUTHERN BAY OF GREEN BAY.
* WHEN...FOR THE DENSE FOG ADVISORY, UNTIL 9 AM CDT THIS
MORNING. FOR THE SMALL CRAFT ADVISORY, FROM 10 AM TO 7 PM CDT
TUESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT. LOW
VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
LMZ543-181645-
/O.CAN.KGRB.MF.Y.0006.000000T0000Z-260518T1400Z/
/O.CON.KGRB.SC.Y.0052.000000T0000Z-260520T0600Z/
TWO RIVERS TO SHEBOYGAN WI-
345 AM CDT MON MAY 18 2026
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT
WEDNESDAY...
..DENSE FOG ADVISORY IS CANCELLED
* WHAT...SOUTH WINDS 10 TO 20 KTS WITH GUSTS TO 25 KTS VEERING
WEST ON TUESDAY. WAVES 3 TO 5 FT INCREASING TO 4 TO 7 FT LATE
TONIGHT INTO TUESDAY.
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM TWO RIVERS TO
SHEBOYGAN.
* WHEN...UNTIL 1 AM CDT WEDNESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
LMZ541-542-181645-
/O.CON.KGRB.MF.Y.0006.000000T0000Z-260518T1400Z/
/O.CON.KGRB.SC.Y.0052.000000T0000Z-260520T0600Z/
ROCK ISLAND PASSAGE TO STURGEON BAY WI-
STURGEON BAY TO TWO RIVERS WI-
345 AM CDT MON MAY 18 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS
MORNING...
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT
WEDNESDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO 1 NM OR LESS. FOR THE SMALL CRAFT ADVISORY, SOUTH
WINDS 10 TO 20 KTS WITH GUSTS TO 25 KTS VEERING WEST ON TUESDAY.
WAVES 3 TO 5 FT INCREASING TO 4 TO 7 FT LATE TONIGHT INTO
TUESDAY.
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM WASHINGTON ISLAND
TO TWO RIVERS.
* WHEN...FOR THE DENSE FOG ADVISORY, UNTIL 9 AM CDT THIS
MORNING. FOR THE SMALL CRAFT ADVISORY, UNTIL 1 AM CDT
WEDNESDAY.
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT. LOW
VISIBILITY WILL MAKE NAVIGATION DIFFICULT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.
IF YOU MUST NAVIGATE, PROCEED WITH CAUTION. USE PROPER FOG
SIGNALS. MAKE SURE ALL RUNNING LIGHTS ARE ON. REMEMBER TO USE
YOUR RADAR AND COMPASS.
KIECKBUSCH
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