551  
WHUS73 KGRB 082026  
MWWGRB  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE GREEN BAY WI  
326 PM CDT MON SEP 8 2025  
 
LMZ542-543-090430-  
/O.CON.KGRB.SC.Y.0072.250908T2100Z-250910T0000Z/  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
326 PM CDT MON SEP 8 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT  
TUESDAY...  
 
* WHAT...SOUTH WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT AND  
WAVES 2 TO 5 FT EXPECTED.  
 
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM STURGEON BAY TO  
SHEBOYGAN.  
 
* WHEN...UNTIL 7 PM CDT TUESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
LMZ541-090430-  
/O.CON.KGRB.SC.Y.0072.250908T2100Z-250910T0300Z/  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
326 PM CDT MON SEP 8 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM CDT  
TUESDAY...  
 
* WHAT...SOUTH WINDS 10 TO 20 KT WITH GUSTS UP TO 30 KT AND  
WAVES 3 TO 6 FT EXPECTED.  
 
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM WASHINGTON ISLAND  
TO STURGEON BAY.  
 
* WHEN...UNTIL 10 PM CDT TUESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
LMZ521-522-090430-  
/O.CON.KGRB.SC.Y.0072.250909T0000Z-250909T1800Z/  
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-  
326 PM CDT MON SEP 8 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING  
TO 1 PM CDT TUESDAY...  
 
* WHAT...SOUTH WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT AND  
WAVES 2 TO 4 FT EXPECTED.  
 
* WHERE...CENTRAL AND SOUTHERN BAY OF GREEN BAY.  
 
* WHEN...FROM 7 PM THIS EVENING TO 1 PM CDT TUESDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 

 
 

 
 
JLA  
 
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