FZPN40 PHFO 211023

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1100 UTC MON SEP 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 21 2026.

24 HOUR FORECAST VALID 0600 UTC SEP 22 2026.

48 HOUR FORECAST VALID 0600 UTC SEP 23 2026.



.WARNINGS.



.NONE.



.SYNOPSIS AND FORECAST. 



.LOW 14N144W 1008 MB MOVING W 10 KT. WINDS 20 TO 25 KT FROM 19N 

TO 16N E OF 145W. SCATTERED MODERATE TO STRONG TSTMS WITHIN 210 

NM OF W SEMICIRCLE OF LOW.

.24 HOUR FORECAST LOW 13N148W 1009 MB. WINDS 20 TO 25 KT FROM 

20N TO 17N BETWEEN 150W AND 143W.

.48 HOUR FORECAST LOW 15N152W 1008 MB. WINDS 20 TO 25 KT FROM 

19N TO 16N BETWEEN 154W AND 150W. 



.TROUGH 27N176W 26N178W 22N179W 18N179W MOVING W 10 KT. 

.24 HOUR FORECAST TROUGH 29N172W 25N179W 23N180W.  

.48 HOUR FORECAST TROUGH W OF AREA. 



.SEAS 2.5 TO 4 M FROM 20N TO 15N E OF 163W.

.24 HOUR FORECAST SEAS 2.5 TO 4 M FROM 24N TO 16N E OF 153W.

.48 HOUR FORECAST SEAS 2.5 TO 4 M FROM 13N TO 25N E OF 158W. 



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

FORECAST AREA.



.MONSOON TROUGH 13N140W 13N143W 11N150W 12N160W 06N169W 09N180W.

ISOLATED MODERATE TSTMS WITHIN 240 NM OF MONSOON TROUGH E 162W.



.ISOLATED MODERATE TSTMS S OF 08N E OF 153W.





$$



.FORECASTER THOMAS. HONOLULU HI.