FZPN40 PHFO 271509

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1700 UTC MON OCT 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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



NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E



SYNOPSIS VALID 1200 UTC OCT 27 2025.

24 HOUR FORECAST VALID 1200 UTC OCT 28 2025.

48 HOUR FORECAST VALID 1200 UTC OCT 29 2025.



.WARNINGS.





.NONE.



.SYNOPSIS AND FORECAST.



.FRONT 30N167W 26N174E MOVING E 20 KT. ISOLATED MODERATE TSTMS 

WITHIN 120 NM OF FRONT. 

.24 HOUR FORECAST FRONT 30N153W 28N160W. WINDS 20 TO 25 KT N OF 

FRONT.

.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N155W 27N161W. WINDS

EASED 20 KT OR LESS.



.TROUGH 24N165W 12N171W 07N176W MOVING W 10 KT. SCATTERED 

MODERATE TO LOCALLY STRONG TSTMS WITHIN 270 NM OF TROUGH S OF 

17N. ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 90 NM OF TROUGH.

.24 HOUR FORECAST TROUGH DISSIPATED.



.24 HOUR FORECAST NEW LOW 10N142W 1006 MB. NEW TROUGH FROM 

12N142W TO LOW TO 08N143W. 

.48 HOUR FORECAST LOW 10N145W 1009 MB. TROUGH FROM 12N145W TO LOW

TO 08N146W. 



.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 23N TO 16N BETWEEN 162E 

AND 178W. 

.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 21N TO 15N BETWEEN 165E 

AND 175W.



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



.SEAS 2.5 TO 3 M N OF LINE 30N169E 26N175E 30N175W...FROM 25N TO

17N W OF 178E...AND FROM 24N TO 09S E OF 153W.

.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N175W 26N171W 

30N154W...AND FROM 24N TO 10N W OF 173W.

.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 23N TO 11N W OF 175W.



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



.MONSOON TROUGH 08N140W 07N144W THENCE ITCZ 07N160W 08N173W...AND

09N177W 06N173E 06N160E. ISOLATED MODERATE TSTMS WITHIN 240 NM OF

ITCZ.



.ISOLATED MODERATE TSTMS FROM 19N TO 10N W OF 165E...AND N OF 24N

BETWEEN 164W AND 154W.





$$



.FORECASTER PIERCE. HONOLULU HI.