FZPN40 PHFO 271009

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC OCT 27 2025.

24 HOUR FORECAST VALID 0600 UTC OCT 28 2025.

48 HOUR FORECAST VALID 0600 UTC OCT 29 2025.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.FRONT 30N170W 28N178W 30N166E MOVING E 20 KT E OF 178E AND 

NEARLY STATIONARY ELSEWHERE. ISOLATED MODERATE TSTMS WITHIN 120 NM

OF FRONT E OF 175E. 

.24 HOUR FORECAST FRONT 30N156W 28N162W 27N171W. WINDS 20 TO 25 

KT N 28N BETWEEN 166W AND 156W. 

.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N155W 27N162W. WINDS

EASED 20 KT OR LESS.



.TROUGH 23N163W 13N168W 06N172W MOVING W 10 KT. SCATTERED 

MODERATE TO LOCALLY STRONG TSTMS WITHIN 180 NM OF TROUGH S OF 15N.

ISOLATED MODERATE TSTMS ELSEWHERE WITHIN 210 NM OF TROUGH.

.24 HOUR FORECAST TROUGH DISSIPATED.



.24 HOUR FORECAST NEW TROUGH 26N158W 22N159W.

.48 HOUR FORECAST TROUGH 25N159W 20N161W.



.24 HOUR FORECAST NEW LOW 10N142W 1008 MB. NEW TROUGH FROM 

12N140W TO LOW TO 08N142W.

.48 HOUR FORECAST LOW 10N144W 1010 MB. TROUGH FROM 13N143W TO LOW

TO 07N145W. 



.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 22N TO 16N BETWEEN 164E

AND 174W.

.48 HOUR FORECAST WINDS EASED 20 KT OR LESS.



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



.SEAS 2.5 TO 3 M N OF LINE 20N160E 19N174E 27N167E 27N175E

30N177W...FROM 17N TO 10N BETWEEN 174W AND 156W...AND E OF LINE 

26N140W 20N154W 14N154W 06N140W.

.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N176W 27N174W 

28N168W 30N159W...AND FROM 23N TO 11N W OF 174W.

.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.



.ITCZ 11N140W 07N152W 09N168W...AND 10N173W 05N175E 08N160E. 

ISOLATED MODERATE TSTMS WITHIN 210 NM OF ITCZ W OF 173E...AND 

WITHIN 90 NM E OF 168W.



.ISOLATED MODERATE TSTMS FROM 18N TO 09N W OF 165E...AND 28N TO

22N BETWEEN 165W AND 152W.





$$



.FORECASTER PIERCE. HONOLULU HI.