678
WHUS73 KGRB 170756
MWWGRB
URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE GREEN BAY WI
256 AM CDT FRI APR 17 2026
LMZ521-522-171600-
/O.CON.KGRB.MF.Y.0004.000000T0000Z-260417T1400Z/
/O.NEW.KGRB.SC.Y.0043.260417T2000Z-260418T0900Z/
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-
256 AM CDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
4 AM CDT SATURDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO 1 NM OR LESS. FOR THE SMALL CRAFT ADVISORY, SOUTH
WINDS 15 TO 20 KT WITH GUSTS UP TO 30 KT AND WAVES 1 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 3 PM THIS
AFTERNOON TO 4 AM CDT SATURDAY.
* 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.
LMZ541>543-171600-
/O.CON.KGRB.MF.Y.0004.000000T0000Z-260417T1400Z/
/O.NEW.KGRB.SC.Y.0043.260417T2000Z-260418T1500Z/
ROCK ISLAND PASSAGE TO STURGEON BAY WI-
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-
256 AM CDT FRI APR 17 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS
MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO
10 AM CDT SATURDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, DENSE FOG WILL REDUCE
VISIBILITY TO 1 NM OR LESS. FOR THE SMALL CRAFT ADVISORY,
SOUTHWEST WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND WAVES 4
TO 6 FT EXPECTED.
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM WASHINGTON ISLAND
TO SHEBOYGAN.
* WHEN...FOR THE DENSE FOG ADVISORY, UNTIL 9 AM CDT THIS
MORNING. FOR THE SMALL CRAFT ADVISORY, FROM 3 PM THIS
AFTERNOON TO 10 AM CDT SATURDAY.
* 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.
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