FZPN40 PHFO 270328

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0500 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 27 2025.

24 HOUR FORECAST VALID 0000 UTC OCT 28 2025.

48 HOUR FORECAST VALID 0000 UTC OCT 29 2025.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.FRONT 30N172W 28N179W 27N169E 29N160E MOVING E 20 KT E OF 178E 

AND NEARLY STATIONARY ELSEWHERE. ISOLATED MODERATE TSTMS WITHIN 

120 NM OF FRONT E OF 173E.

.24 HOUR FORECAST FRONT 30N157W 28N161W 27N173W 30N179E. WINDS 20

TO 25 KT N OF FRONT E OF 175W.

.48 HOUR FORECAST FRONT 30N153W 26N159W. WINDS 20 TO 25 KT WITHIN

150 NM OF FRONT.



.TROUGH 22N162W 14N166W 06N172W MOVING W 10 KT S OF 13N AND 

NEARLY STATIONARY ELSEWHERE. SCATTERED MODERATE TO LOCALLY STRONG 

TSTMS WITHIN 240 NM OF TROUGH S OF 13N. SCATTERED MODERATE TSTMS 

FROM 24N TO 18N BETWEEN 165W AND 160W.

.24 HOUR FORECAST TROUGH DISSIPATED.



.TROUGH 14N164E 10N160E MOVING W 10 KT. ISOLATED MODERATE TSTMS 

FROM 16N TO 05N W OF 165E.

.24 HOUR FORECAST TROUGH MOVED W OF AREA.



.24 HOUR FORECAST NEW TROUGH 28N147W 22N159W 19N161W.

.48 HOUR FORECAST TROUGH 26N152W 17N159W.



.24 HOUR FORECAST NEW LOW 09N141W 1006 MB. NEW TROUGH FROM 

12N140W TO LOW TO 06N142W.

.48 HOUR FORECAST LOW 10N143W 1007 MB. TROUGH FROM 13N142W TO LOW

TO 07N143W. SEAS 2.5 TO 3 M WITHIN 180 NM OF LOW.



.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 24N TO 10N W OF 174E.



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



.SEAS 2.5 TO 3 M N OF LINE 30N179E 24N172E 19N175E 20N160E...AND 

E OF LINE 30N143W 26N143W 22N156W 18N154W 15N178E 06N179W 

11N168W 07N140W.

.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N177E 27N179E 

30N164W...AND FROM 23N TO 11N W OF 173W.

.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF LINE 30N167W 27N169W 

25N166W 30N151W...AND FROM 24N TO 11N W OF 174W.



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



.ITCZ 08N140W 07N149W 08N164W...AND 07N178W 06N166E. 

ISOLATED MODERATE TSTMS WITHIN 180 NM OF ITCZ W OF 153W.



.ISOLATED MODERATE TSTMS FROM 19N TO 16N BETWEEN 174E AND 178W.



$$



.FORECASTER TROTTER. HONOLULU HI.