FZPS40 PHFO 192139

HSFSP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC AUG 19 2025.

24 HOUR FORECAST VALID 1800 UTC AUG 20 2025.

48 HOUR FORECAST VALID 1800 UTC AUG 21 2025.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.FRONT FROM 25S138W TO 20S142W TO 16S150W THENCE TROUGH TO 10S160W 

TO 08S168W. FRONT NEARLY STATIONARY. TROUGH MOVING W SLOWLY. 

ISOLATED MODERATE TSTMS WITHIN 120 NM OF LINE FROM 25S135W TO 

20S137W...AND WITHIN 60 NM OF LINE FROM 07S169W TO 06S158W.

.24 HOUR FORECAST FRONT FROM 25S135W TO 22S137W TO 22S145W THENCE 

TROUGH TO 12S162W.

.48 HOUR FORECAST FRONT DISSIPATED. TROUGH FROM 25S145W TO 21S148W. 



.FRONT FROM 25S163W TO 20S169W TO 17S179W MOVING E SLOWLY. 

.24 HOUR FORECAST FRONT FROM 25S160W TO 18S169W. 

.48 HOUR FORECAST FRONT MOVED S OF AREA. TROUGH FROM 25S155W TO 

20S163W. 



.SE WINDS 20 TO 25 KT BETWEEN 09S AND A LINE FROM 12S170W TO 

19S175W TO 24S160E...AND FROM 20S TO 06S E OF 128W. 

.24 HOUR FORECAST SE WINDS 20 TO 30 KT IN AREA BOUNDED BY 06S175W 

15S175W 25S170E 25S160E 10S160E 06S175W. SE WINDS 20 TO 25 KT S OF 

04S E OF 128W...AND N OF 08S BETWEEN 128W AND 150W.

.48 HOUR FORECAST SE WINDS 20 TO 30 KT IN AREA BOUNDED BY 08S170E 

11S170W 25S175E 25S160E 11S160E 08S170E. SE WINDS 20 TO 25 KT N OF 

07S BETWEEN 140W AND 160W.



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



.SEAS 2.5 TO 4 M S OF A LINE FROM 03S120W TO 13S135W TO 20S153W.

.24 HOUR FORECAST SEAS 2.5 TO 4.5 M IN AREA BOUNDED BY 06S175W 

12S175W 20S174E 25S170W 25S160E 13S160E 16S175W. SEAS 2.5 TO 3.5 M 

S OF 04S E OF 135W. SEAS 2.5 TO 3 M S OF 22S BETWEEN 135W AND 

152W.

.48 HOUR FORECAST SEAS 2.5 TO 4 M S OF A LINE FROM 25S165W TO 

05S175E TO 10S160E. SEAS 2.5 TO 3.5 M E OF 138W. SEAS 2.5 TO 3 M N 

OF 07S BETWEEN 138W AND 155W. 



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



.SCATTERED MODERATE TSTMS FROM 12S TO 08S BETWEEN 179W TO 174E. 

ISOLATED MODERATE TSTMS FROM 13S TO 03S W OF 166E. 



$$



.FORECASTER WROE. HONOLULU HI.