FZPN40 PHFO 041457

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1700 UTC TUE AUG 04 2026



SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 180W



SYNOPSIS VALID 1200 UTC AUG 04 2026.

24 HOUR FORECAST VALID 1200 UTC AUG 05 2026.

48 HOUR FORECAST VALID 1200 UTC AUG 06 2026.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST



.LOW 11N174W 1008 MB MOVING W SLOWLY. TROUGH 07N176W TO LOW TO 

14N170W. WINDS 20 TO 25 KT FROM 13N TO 15N BETWEEN 170W AND 173W.

SEAS 2.5 TO 3 M WITHIN 240 NM OF A LINE FROM 12N169W TO 24N180W. 

SCATTERED MODERATE TO STRONG TSTMS FROM 10N TO 13N BETWEEN 167W 

AND 176W.

.24 HOUR FORECAST LOW 11N176W 1008 MB. TROUGH 06N179W TO LOW TO 

16N173W. WINDS EASED BELOW 20 KT. SEAS 2.5 TO 3 M FROM 13N TO 16N 

BETWEEN 174W AND 179W.

.48 HOUR FORECAST LOW 12N178W 1009 MB. TROUGH 10N180W TO LOW TO 

17N177W. WINDS BELOW 20 KT AND SEAS LESS THAN 2.5 M.



.LOW 27N145W 1014 MB MOVING N 10 KT. TROUGH FROM 24N146W TO LOW 

TO 30N145W. WINDS 20 TO 25 KT AND SEAS 2.5 TO 3 M N OF 27N BETWEEN

141W AND 146W.

.24 HOUR FORECAST LOW 28N146W 1015 MB. TROUGH 25N145W TO LOW TO 

30N146W. WINDS EASED BELOW 20 KT AND SEAS DROPPED TO LESS THAN 2.5

M.

.48 HOUR FORECAST LOW OPENED INTO TROUGH FROM 25N148W TO 30N147W.

WINDS BELOW 20 KT AND SEAS LESS THAN 2.5 M.



.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 17N TO 19N E OF 141W.



.24 HOUR FORECAST NEW TROUGH 27N173W TO 30N171W. 

.48 HOUR FORECAST TROUGH 28N178W TO 30N177W.



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



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



.ITCZ 08N140W TO 08N146W TO 05N151W. SCATTERED MODERATE TSTMS 

WITHIN 175 NM OF ITCZ. 



.SCATTERED MODERATE TSTMS FROM 00N TO 02N E OF 145W...AND FROM

00N TO 02N BETWEEN 154W AND 168W.



$$



.FORECASTER CHAN. HONOLULU HI.