952  
WHUS73 KGRB 121534  
MWWGRB  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE GREEN BAY WI  
1034 AM CDT TUE MAY 12 2026  
 
LMZ541>543-122345-  
/O.EXT.KGRB.SC.Y.0050.000000T0000Z-260514T0000Z/  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
1034 AM CDT TUE MAY 12 2026  
   
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT WEDNESDAY
 
 
* WHAT...SOUTH WINDS 15 TO 25 KTS WITH GUSTS TO 30 TO 35 KTS  
VEERING NORTHWEST THIS EVENING. WAVES BUILDING TO 7 TO 10 FT  
TODAY, THEN SUBSIDING TO 3 TO 5 FT LATE TONIGHT.  
 
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM WASHINGTON ISLAND  
TO SHEBOYGAN.  
 
* WHEN...UNTIL 7 PM 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.  
 

 
 

 
 
LMZ521-522-122345-  
/O.EXT.KGRB.SC.Y.0050.000000T0000Z-260514T0000Z/  
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-  
1034 AM CDT TUE MAY 12 2026  
   
..SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 7 PM CDT WEDNESDAY
 
 
* WHAT...SOUTH WINDS 15 TO 25 KTS WITH GUSTS TO 30 KTS VEERING  
NORTHWEST AND GUSTING TO 30 TO 35 KTS EARLY WEDNESDAY MORNING.  
WAVES 2 TO 5 FT EXPECTED.  
 
* WHERE...CENTRAL AND SOUTHERN BAY OF GREEN BAY.  
 
* WHEN...UNTIL 7 PM 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.  
 

 
 

 
 
MPC  
 
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