675  
WHUS76 KEKA 191612  
MWWEKA  
 
URGENT - MARINE WEATHER MESSAGE  
NATIONAL WEATHER SERVICE EUREKA CA  
912 AM PDT THU OCT 19 2017  
 
PZZ450-455-200015-  
/O.CON.KEKA.SC.Y.0104.000000T0000Z-171020T0000Z/  
/O.CON.KEKA.SE.W.0024.171020T0000Z-171021T0100Z/  
PT ST GEORGE TO CAPE MENDOCINO OUT 10 NM-  
CAPE MENDOCINO TO PT ARENA OUT 10 NM-  
912 AM PDT THU OCT 19 2017  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM THIS  
AFTERNOON...  
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM THIS  
AFTERNOON TO 6 PM FRIDAY...  
 
* WINDS...S 15 TO 25 KT GUSTING TO 30 KT TODAY.  
 
* WAVES...STEEP S WIND WAVES 4 TO 7 FT TODAY FOLLOWED BY  
A LARGE NW SWELL AROUND 20 FT AT 17 SECONDS TONIGHT  
THROUGH FRIDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE  
IMMINENT OR OCCURRING. RECREATIONAL BOATERS SHOULD REMAIN IN  
PORT, OR TAKE SHELTER UNTIL WAVES SUBSIDE. COMMERCIAL VESSELS  
SHOULD PREPARE FOR ROUGH SEAS AND CONSIDER REMAINING IN PORT OR  
TAKING SHELTER IN PORT UNTIL HAZARDOUS SEAS SUBSIDE.  
 
A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS  
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.  
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.  
 

 
 
PZZ470-200015-  
/O.CON.KEKA.SC.Y.0104.000000T0000Z-171020T0000Z/  
/O.CON.KEKA.SE.W.0024.171020T0000Z-171021T0100Z/  
PT ST GEORGE TO CAPE MENDOCINO 10 TO 60 NM-  
912 AM PDT THU OCT 19 2017  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM THIS  
AFTERNOON...  
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM THIS  
AFTERNOON TO 6 PM FRIDAY...  
 
* WINDS...S 20 TO 30 KT WITH OCCASIONAL GUSTS TO 35 KT TODAY.  
 
* WAVES...STEEP S WIND WAVES 7 TO 10 FT TODAY FOLLOWED BY A  
LARGE NW SWELL AROUND 20 FT AT 17 SECONDS TONIGHT THROUGH  
FRIDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE  
IMMINENT OR OCCURRING. RECREATIONAL BOATERS SHOULD REMAIN IN  
PORT, OR TAKE SHELTER UNTIL WAVES SUBSIDE. COMMERCIAL VESSELS  
SHOULD PREPARE FOR ROUGH SEAS AND CONSIDER REMAINING IN PORT OR  
TAKING SHELTER IN PORT UNTIL HAZARDOUS SEAS SUBSIDE.  
 
A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS  
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.  
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.  
 

 
 
PZZ475-200015-  
/O.CON.KEKA.SC.Y.0104.000000T0000Z-171020T0000Z/  
/O.CON.KEKA.SE.W.0024.171020T0000Z-171021T0100Z/  
CAPE MENDOCINO TO PT ARENA 10 TO 60 NM-  
912 AM PDT THU OCT 19 2017  
 
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 5 PM THIS  
AFTERNOON...  
...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 5 PM THIS  
AFTERNOON TO 6 PM FRIDAY...  
 
* WINDS...S 15 TO 25 KT GUSTING TO 30 KT TODAY.  
 
* WAVES...STEEP S WIND WAVES 5 TO 7 FT TODAY FOLLOWED BY A  
LARGE NW SWELL AROUND 20 FT AT 17 SECONDS TONIGHT THROUGH  
FRIDAY.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
A HAZARDOUS SEAS WARNING MEANS HAZARDOUS SEA CONDITIONS ARE  
IMMINENT OR OCCURRING. RECREATIONAL BOATERS SHOULD REMAIN IN  
PORT, OR TAKE SHELTER UNTIL WAVES SUBSIDE. COMMERCIAL VESSELS  
SHOULD PREPARE FOR ROUGH SEAS AND CONSIDER REMAINING IN PORT OR  
TAKING SHELTER IN PORT UNTIL HAZARDOUS SEAS SUBSIDE.  
 
A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS  
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.  
INEXPERIENCED MARINERS, ESPECIALLY THOSE OPERATING SMALLER  
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.  
 

 
 
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