599  
WHUS73 KGRB 110351  
MWWGRB  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE GREEN BAY WI  
1051 PM CDT MON AUG 10 2026  
 
LMZ541>543-111500-  
/O.NEW.KGRB.MF.Y.0017.260811T0351Z-260811T1500Z/  
ROCK ISLAND PASSAGE TO STURGEON BAY WI-  
STURGEON BAY TO TWO RIVERS WI-TWO RIVERS TO SHEBOYGAN WI-  
1051 PM CDT MON AUG 10 2026  
   
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT TUESDAY  
 
* WHAT...DENSE FOG WILL REDUCE VISIBILITY TO 1/2 NM OR LESS.  
 
* WHERE...LAKE MICHIGAN NEARSHORE WATERS FROM WASHINGTON ISLAND  
TO SHEBOYGAN.  
 
* WHEN...UNTIL 10 AM CDT TUESDAY.  
 
* IMPACTS...LOW VISIBILITY WILL MAKE NAVIGATION DIFFICULT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
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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