719  
FZPN03 KNHC 170250  
HSFEP2  
 
HIGH SEAS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
0430 UTC MON AUG 17 2026  
 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  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 MON AUG 17.  
24 HOUR FORECAST VALID 0000 UTC TUE AUG 18.  
48 HOUR FORECAST VALID 0000 UTC WED AUG 19.  
 
.WARNINGS.  
 
.NONE.  
 
.SYNOPSIS AND FORECAST.  
 
.WITHIN 29N114W TO 30N116W TO 29N116W TO 27N116W TO 26N115W TO  
29N114W...INCLUDING SEBASTIAN VIZCAINO BAY AND WITHIN 60 NM OF  
SHORE...NW WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.  
.24 HOUR FORECAST LITTLE CHANGE.  
.33 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS  
LESS THAN 2.5 M.  
 
.REMNANTS OF HERNAN W OF AREA. OVER FORECAST WATERS WITHIN  
19N139W TO 21N140W TO 15N140W TO 16N139W TO 19N139W WINDS 20 KT  
OR LESS. SEAS 2.5 TO 3.0 M IN NE SWELL.  
.06 HOUR FORECAST OVER FORECAST WATERS CONDITIONS IMPROVE. WINDS  
20 KT OR LESS. SEAS LESS THAN 2.5 M.  
 
.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W  
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20  
TO 30 KT. SEAS BUILDING TO 2.5 TO 3.0 M.  
.24 HOUR FORECAST LITTLE CHANGE.  
.48 HOUR FORECAST LITTLE CHANGE.  
 
.WITHIN 12N87W TO 11N88W TO 10N88W TO 10N87W TO 11N87W TO 12N87W   
..INCLUDING THE GULF OF PAPAGAYO
 
E WINDS 20 TO 25 KT. SEAS  
LESS THAN 2.5 M. WITHIN 10N91W TO 11N92W TO 10N93W TO 09N94W TO  
09N93W TO 09N91W TO 10N91W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M  
IN MIXED NE TO E AND SW SWELL.  
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS  
LESS THAN 2.5 M IN SW SWELL.  
.24 HOUR FORECAST LITTLE CHANGE.  
.33 HOUR FORECAST WITHIN 11N86W TO 11N87W TO 11N88W TO 10N88W TO  
10N86W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E  
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.  
.48 HOUR FORECAST WITHIN 11N86W TO 12N87W TO 11N88W TO 10N88W TO  
10N87W TO 11N86W...INCLUDING THE GULF OF PAPAGAYO...NE TO E  
WINDS 20 TO 25 KT. SEAS LESS THAN 2.5 M.  
 
.WITHIN 01S112W TO 02N116W TO 00N128W TO 02S120W TO 03.4S120W TO  
03.4S93W TO 01S112W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN  
MIXED SE AND SW SWELL.  
.24 HOUR FORECAST WITHIN 02N100W TO 02N108W TO 00N112W TO  
00N128W TO 03.4S120W TO 03.4S90W TO 02N100W WINDS 20 KT OR LESS.  
SEAS 2.5 TO 3.0 M IN MIXED SE AND SW SWELL.  
.48 HOUR FORECAST WITHIN 01N98W TO 05N100W TO 02N111W TO 00N133W  
TO 03.4S120W TO 03.4S83W TO 01N98W...EXCEPT LEE OF GALAPAGOS  
ISLANDS...WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SE AND  
SW SWELL.  
 
.18 HOUR FORECAST TROPICAL WAVE NEAR 126W. WITHIN 14N124W TO  
14N129W TO 12N129W TO 10N128W TO 09N123W TO 10N123W TO 14N124W  
WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.  
.24 HOUR FORECAST LITTLE CHANGE.  
.42 HOUR FORECAST TROPICAL WAVE NEAR 134W. CONDITIONS IMPROVE.  
WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.  
 
.27 HOUR FORECAST WITHIN 25N108W TO 26N109W TO 24N109W TO  
23N108W TO 25N108W...INCLUDING THE GULF OF CALIFORNIA...E TO SE  
WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M. SCATTERED TO NUMEROUS  
TSTMS.  
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS  
LESS THAN 2.5 M.  
 
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 2.5 M.  
 
CONVECTION VALID AT 0250 UTC MON AUG 17...  
   
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
 
 
MONSOON TROUGH FROM LOW PRES NEAR 11N74W TO 10N86W TO 07N97W TO  
08N102W. ITCZ FROM 08N102W TO 08.5N121W THEN RESUMES FROM  
09N123W TO 05N140W. SCATTERED TO NUMEROUS MODERATE AND ISOLATED  
STRONG FROM 02N TO 14.5N BETWEEN 77W AND 108W...FROM 06N TO 11N  
BETWEEN 108W AND 130W...AND FROM 01N TO 06N BETWEEN 138W AND  
140W.  
 

 
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.  
 
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