FZPS40 PHFO 191531

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1730 UTC TUE AUG 19 2025



SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.



THIS HIGH SEAS FORECAST USES 1-MINUTE AVERAGE WINDS WHICH MAY BE

HIGHER THAN 10-MINUTE AVERAGE WINDS.



SECURITE



SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E



SYNOPSIS VALID 1200 UTC AUG 19 2025.

24 HOUR FORECAST VALID 1200 UTC AUG 20 2025.

48 HOUR FORECAST VALID 1200 UTC AUG 21 2025.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.FRONT FROM 25S136W TO 18S140W THENCE TROUGH TO 13S147W TO 10S160E.

FRONT NEARLY STATIONARY. TROUGH MOVING W SLOWLY. ISOLATED MODERATE

TSTMS WITHIN 210 NM E OF BOUNDARY S OF 22S.

.24 HOUR FORECAST FRONT FROM 25S136W TO 18S140W. TROUGH DISSIPATED.

.48 HOUR FORECAST FRONT WEAKENED TO TROUGH AND MOVED S OF AREA. 



.FRONT FROM 25S164W TO 22S167W THENCE TROUGH TO 17S175W TO 16S174E.

FRONT MOVING E SLOWLY. TROUGH NEARLY STATIONARY. 

.24 HOUR FORECAST FRONT MOVED S OF AREA. TROUGH FROM 25S162W TO 

18S169W. 

.48 HOUR FORECAST TROUGH FROM 25S158W TO 17S172W. 



.SE WINDS 20 TO 25 KT FROM 18S TO 11S BETWEEN 178W AND 172E...AND

FROM 23S TO 16S W OF 169E. 

.24 HOUR FORECAST SE WINDS 20 TO 30 KT BETWEEN TWO LINES FROM 

12S172W AND 26S163E AND 05S173W AND 10S160E. 

.48 HOUR FORECAST SE WINDS 20 TO 30 KT BETWEEN TWO LINES FROM 

14S170W AND 25S172E AND 07S177E AND 13S160E.



.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.



.SEAS 2.5 TO 4 M S O F A LINE FROM 03S120W TO 16S143W TO 07S170W.

.24 HOUR FORECAST SEAS 2.5 TO 3 M S OF LINE FROM 00S120W TO 

25S157W...AND BETWEEN TWO LINES FROM 11S163W TO 22S163E AND FROM 

04S171E TO 12S160E. 

.48 HOUR FORECAST SEAS 2.5 TO 3 M E OF A LINE FROM 01S160W TO 

17S137W TO 25S147W...AND SEAS 2.5 TO 3.5 M S OF 06S W OF 176W. 



.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.



.NUMEROUS MODERATE TSTMS FROM 10S TO 00S W OF 163E. 







$$



.FORECASTER BLOOD. HONOLULU HI.