FZPN40 PHFO 241517

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1700 UTC FRI OCT 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 24 2025.

24 HOUR FORECAST VALID 1200 UTC OCT 25 2025.

48 HOUR FORECAST VALID 1200 UTC OCT 26 2025.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST.



.TROUGH 25N166E 18N164E MOVING W SLOWLY. SCATTERED MODERATE

TSTMS WITHIN 180 NM E OF TROUGH. 

.24 HOUR FORECAST TROUGH 25N163E 19N161E.

.48 HOUR FORECAST TROUGH MOVED W OF AREA. 



.TROUGH 15N169W 11N175W MOVING NW 15 KT. ISOLATED MODERATE

TSTMS WITHIN 150 NM OF TROUGH. 

.24 HOUR FORECAST TROUGH 16N153W 09N156W.

.48 HOUR FORECAST TROUGH 17N160W 11N163W.   



.TROUGH 15N147W 05N153W MOVING W 10 KT. ISOLATED MODERATE

TSTMS WITHIN 210 NM OF TROUGH. 

.24 HOUR FORECAST TROUGH 16N178W 11N179E.

.48 HOUR FORECAST TROUGH DISSIPATED.



.24 HOUR FORECAST NEW FRONT 30N161E 29N160E. 

.48 HOUR FORECAST FRONT MOVED N OF AREA. 



.WINDS 20 TO 30 KT FROM 23N TO 15N BETWEEN 154W AND 177W. 

WINDS 20 TO 25 KT FROM 16N TO 12N BETWEEN 143W AND 149W. 

.24 HOUR FORECAST WINDS 20 TO 30 KT FROM 23N TO 14N BETWEEN

149W AND 166W. 

.48 HOUR FORECAST WINDS 20 TO 30 KT FROM 19N TO 15N BETWEEN 

156W AND 161W. WINDS 20 TO 25 KT N OF 29N W OF 165W. 



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



.SEAS 2.5 TO 4 M FROM 25N TO 11N E OF 176E. 

.24 HOUR FORECAST SEAS 2.5 TO 4 M BOUNDED BY AREA 30N140W 

08N140W 14N179E 22N179E 30N152W 30N140W. SEAS 2.5 TO 3 M

N OF 28N W OF 163E. 

.48 HOUR FORECAST SEAS 2.5 TO 3.5 M BOUNDED BY AREA 30N140W 

09N140W 19N172E 30N144W 30N140W. SEAS 2.5 TO 3 M N OF 26N W

OF 168E. 



.SEAS 2.5 M OR LESS OVER REMAINDER FORECAST AREA.



.ITCZ 08N140W 08N144W AND 07N159W 08N169W AND 10N177W 09N172W

09N160E. ISOLATED MODERATE TO ISOLATED MODERATE TSTMS WITHIN 

210 NM OF ITCZ. 



.ISOLATED MODERATE TSTMS S OF 08N BETWEEN 174W AND 178W.



.ISOLATED MODERATE TSTMS N OF 25N BETWEEN 172E AND 166E. 



$$



.FORECASTER THOMAS. HONOLULU HI.