764  
WHUS73 KGRB 171013  
MWWGRB  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE GREEN BAY WI  
513 AM CDT SUN AUG 17 2025  
 
LMZ542-543-171815-  
/O.CON.KGRB.SC.Y.0067.250817T1200Z-250818T2100Z/  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
513 AM CDT SUN AUG 17 2025  
   
..SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM CDT MONDAY  
 
* WHAT...NORTHEAST WINDS 15 TO 20 KTS, VEERING SOUTHEAST TONIGHT.  
WAVES 3 TO 6 FT EXPECTED.  
 
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM STURGEON BAY TO  
SHEBOYGAN.  
 
* WHEN...FROM 7 AM THIS MORNING TO 4 PM CDT MONDAY.  
 
* IMPACTS...CONDITIONS WILL BE HAZARDOUS TO SMALL CRAFT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS, SHOULD AVOID NAVIGATING IN HAZARDOUS CONDITIONS.  
 
 
 
 
 
LMZ541-171815-  
/O.CON.KGRB.SC.Y.0067.250817T1200Z-250818T1500Z/  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
513 AM CDT SUN AUG 17 2025  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 AM CDT  
MONDAY...  
 
* WHAT...NORTHEAST WINDS 15 TO 20 KTS, VEERING SOUTHEAST TONIGHT.  
WAVES 3 TO 5 FT EXPECTED.  
 
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM WASHINGTON ISLAND  
TO STURGEON BAY.  
 
* WHEN...FROM 7 AM THIS MORNING TO 10 AM CDT MONDAY.  
 
* 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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