635  
WHUS76 KEKA 181529  
MWWEKA  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE EUREKA CA  
829 AM PDT TUE AUG 18 2026  
 
PZZ455-182330-  
/O.CON.KEKA.SC.Y.0075.260819T0000Z-260820T0400Z/  
COASTAL WATERS FROM CAPE MENDOCINO TO PT. ARENA CA OUT 10 NM-  
829 AM PDT TUE AUG 18 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 5 PM THIS  
AFTERNOON TO 9 PM PDT WEDNESDAY...  
 
* WHAT...NORTHWEST WINDS 10 TO 20 KT WITH GUSTS UP TO 35 KT AND  
SEAS 5 TO 8 FEET EXPECTED.  
 
* WHERE...COASTAL WATERS FROM CAPE MENDOCINO TO PT. ARENA CA OUT  
10 NM.  
 
* WHEN...FROM 5 PM THIS AFTERNOON TO 9 PM PDT 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.  
 

 
 

 
 
PZZ470-182330-  
/O.CON.KEKA.SC.Y.0075.000000T0000Z-260820T0400Z/  
WATERS FROM PT. ST. GEORGE TO CAPE MENDOCINO CA FROM 10 TO 60 NM-  
829 AM PDT TUE AUG 18 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT  
WEDNESDAY...  
 
* WHAT...NORTH WINDS 15 TO 25 KT WITH GUSTS UP TO 30 KT AND SEAS  
6 TO 9 FEET.  
 
* WHERE...WATERS FROM PT. ST. GEORGE TO CAPE MENDOCINO CA FROM  
10 TO 60 NM.  
 
* WHEN...UNTIL 9 PM PDT 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.  
 

 
 

 
 
PZZ475-182330-  
/O.CON.KEKA.SC.Y.0075.000000T0000Z-260820T0400Z/  
WATERS FROM CAPE MENDOCINO TO PT. ARENA CA FROM 10 TO 60 NM-  
829 AM PDT TUE AUG 18 2026  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT  
WEDNESDAY...  
 
* WHAT...NORTH WINDS 15 TO 25 KT WITH GUSTS UP TO 35 KT AND SEAS  
7 TO 9 FEET.  
 
* WHERE...WATERS FROM CAPE MENDOCINO TO PT. ARENA CA FROM 10 TO  
60 NM.  
 
* WHEN...UNTIL 9 PM PDT 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.  
 

 
 

 
 
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