921  
FZPN03 KNHC 240305  
HSFEP2  
 
HIGH SEAS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
0430 UTC SAT FEB 24 2018  
 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  
 
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE  
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
SECURITE  
 
E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE  
EQUATOR E OF 120W  
 
SYNOPSIS VALID 0000 UTC SAT FEB 24.  
24 HOUR FORECAST VALID 0000 UTC SUN FEB 25.  
48 HOUR FORECAST VALID 0000 UTC MON FEB 26.  
 
.WARNINGS.  
   
..ASHFALL ADVISORY
 
FUEGO VOLCANO AT POSITION 14.3N 90.9W IS  
CURRENTLY ERUPTING. PLUME OF VOLCANIC ASH MAY REACH TO THE  
SURFACE. LOW LEVEL VISIBILITY MAY BE REDUCED TO 6 NM OR LESS N  
OF 14N E OF 93W. MARINERS SHOULD EXERCISE CAUTION. IF MARINERS  
ENCOUNTER VOLCANIC ASH...THEY ARE ENCOURAGED TO REPORT THE  
OBSERVATION TO THE NATIONAL WEATHER SERVICE BY CALLING 305-229-  
4425.  
 
.SYNOPSIS AND FORECAST.  
 
.WITHIN AREA BOUNDED BY 20N140W TO 20N132W TO 14N115W TO 14N125W  
TO 20N140W NE WINDS 20 TO 25 KT. SEAS 9 TO 11 FT. ELSEWHERE  
WITHIN AREA BOUNDED BY 25N140W TO 17N114W TO 04N120W TO 04N140W  
TO 25N140W WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED  
NE AND NW SWELL.  
.24 HOUR FORECAST WITHIN 120 NM OF LINE FROM 17N140W TO 13N120W  
NE WINDS 20 TO 25 KT. SEAS 9 TO 11 FT. ELSEWHERE WITHIN AREA  
BOUNDED BY 30N128W TO 30N119W TO 23N113W TO 10N114W TO 06N140W  
TO 25N140W TO 30N128W WINDS 20 KT OR LESS. SEAS TO 10 FT  
PRIMARILY IN MIXED NE AND NW SWELL.  
.48 HOUR FORECAST FROM 17N TO 27N BETWEEN 137W AND 140W NE WINDS  
20 TO 25 KT. SEAS TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY  
30N126W TO 30N119W TO 12N117W TO 08N140W TO 27N140W TO 30N126W  
WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN MIXED NE AND NW  
SWELL.  
   
WITHIN 75 NM OF LINE FROM 12N87W TO 11N89W
 
INCLUDING THE  
GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.  
.24 HOUR FORECAST LITTLE CHANGE.  
.48 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS.  
SEAS LESS THAN 8 FT.  
   
N OF 27.5N WITHIN 60 NM W OF BAJA CALIFORNIA PENINSULA
 
 
INCLUDING SEBASTIAN VIZCAINO BAY...NW TO N WINDS 20 TO 25 KT.  
SEAS TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY 30N124W TO  
30N116W TO 28N115W TO 30N124W WINDS 20 KT OR LESS. SEAS TO 10  
FT PRIMARILY IN NW SWELL.  
.12 HOUR FORECAST FROM 24N TO 28N WITHIN 180 NM W OF BAJA  
CALIFORNIA PENINSULA N WINDS 20 TO 25 KT. SEAS TO 10 FT.  
ELSEWHERE WITHIN AREA BOUNDED BY 30N130W TO 30N116W TO 24N113W  
TO 30N130W WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN NW  
SWELL.  
.24 HOUR FORECAST CONDITIONS MERGE.  
 
.GULF OF CALIFORNIA N OF 30N NW TO N WINDS 20 TO 25 KT. SEAS  
LESS THAN 8 FT.  
.12 HOUR FORECAST GULF OF CALIFORNIA FROM 26N TO 31N NW WINDS 20  
TO 25 KT. SEAS LESS THAN 8 FT.  
.24 HOUR FORECAST GULF OF CALIFORNIA S OF 29N NW WINDS 20 TO 25  
KT. SEAS TO 8 FT.  
.30 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS  
LESS THAN 8 FT.  
 
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
CONVECTION VALID AT 0300 UTC SAT FEB 24...  
   
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
 
 
SURFACE TROUGH AXIS EXTENDS FROM 04N90W TO 01N103W TO 03N109W.  
ITCZ AXIS EXTENDS FROM 03N109W TO 06N120W TO 05N130W TO 07N140W.  
SCATTERED MODERATE ISOLATED STRONG WITHIN AREA BOUNDED BY  
15N135W TO 14N105W TO 02N126W TO 15N135W.  
 

 
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.  
 
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