FZPN40 PHFO 120344

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

0500 UTC FRI DEC 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 12 2025.

24 HOUR FORECAST VALID 0000 UTC DEC 13 2025.

48 HOUR FORECAST VALID 0000 UTC DEC 14 2025.



.WARNINGS.



...GALE WARNING...

.FRONT 30N179W 23N176E 20N167E 19N160E AND NEARLY STATIONARY 

ELSEWHERE. WINDS 20 TO 30 KT N OF LINE 30N173E 25N165E 21N173E 

25N177W 30N175W. ISOLATED MODERATE TSTMS WITHIN 210 NM E OF FRONT 

N OF 24N. 

.24 HOUR FORECAST FRONT 30N173W 22N174W 19N177E 19N166E. WINDS 20

TO 30 KT N OF LINE 30N175E 22N173E 19N167E 21N175W 25N167W 

30N168W.

.48 HOUR FORECAST FRONT 30N158W 23N163W 19N171W. WINDS 30 TO 40 

KT N OF 25N BETWEEN 164W AND 154W. WINDS 20 TO 30 KT ELSEWHERE N 

OF 21N BETWEEN 174W AND 150W.



.SYNOPSIS AND FORECAST.



.FRONT 30N147W 21N154W 18N162W 18N178W MOVING ENE 10 KT E OF 160W

AND NEARLY STATIONARY ELSEWHERE. WINDS 20 TO 30 KT N OF 26N 

BETWEEN 149W AND 142W. 

.24 HOUR FORECAST FRONT 30N141W 22N150W 21N157W. WINDS EASED TO 

20 KT OR LESS.

.48 HOUR FORECAST FRONT MOVED N OF AREA.



.TROUGH 30N151W 26N157W 25N163W MOVING ENE 10 KT. 

.24 HOUR FORECAST TROUGH DISSIPATED.



.24 HOUR FORECAST NEW FRONT 30N161E 28N160E.

.48 HOUR FORECAST FRONT 30N172E 27N168E 24N160E. WINDS 20 TO 25 

KT NW OF FRONT. 



.48 HOUR FORECAST NEW TROUGH 30N164W 25N172W. WINDS 20 TO 30 KT 

WITHIN 210 NM OF TROUGH.



.SEAS 4 TO 5 M N OF LINE 30N176E 23N168E 24N163E 30N164E. SEAS 

2.5 TO 4 M ELSEWHERE N OF LINE 30N178W 22N173E 17N160E. SEAS 2.5 

TO 4 M N OF LINE 30N171W 19N164W 22N160W 20N154W 28N140W.

.24 HOUR FORECAST SEAS 2.5 TO 4.5 M N OF LINE 30N169W 23N174W 

17N172E 15N160E.

.48 HOUR FORECAST SEAS 4 TO 7 M N OF LINE 30N156W 21N173W 23N179W

30N177E SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N150W 13N178E 

11N160E...EXCEPT FROM 28N TO 24N BETWEEN 162E AND 171E.



.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER THE REMAINDER 

OF THE FORECAST AREA.



.ITCZ 09N140W 08N171W 08N174E 04N160E. ISOLATED MODERATE TSTMS 

WITHIN 240 NM OF ITCZ W OF 165W.



$$



.FORECASTER TROTTER. HONOLULU HI.