FZPN40 PHFO 201005

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1100 UTC FRI MAR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 MAR 20 2026.

24 HOUR FORECAST VALID 0600 UTC MAR 21 2026.

48 HOUR FORECAST VALID 0600 UTC MAR 22 2026.



.WARNINGS.



...GALE WARNING...

.LOW 23N165W 1007 MB NEARLY STATIONARY. WARM FRONT FROM LOW TO 

24N165W 25N163W 26N160W 27N157W MOVING E SLOWLY. TROUGH FROM LOW TO

22N168W 21N175W 22N177W 24N179W 27N180W MOVING E SLOWLY. SECOND 

TROUGH 24N163W 23N161W 22N160W 20N161W 15N168W 14N171W 13N180W

MOVING SE SLOWLY. ENE WINDS 20 TO 30 KT N OF LINE 25N155W 25N161W 

24N172W 25N174W. SCATTERED MODERATE TSTMS WITHIN 180 NM OF WARM 

FRONT BETWEEN 157W AND 162W. ISOLATED MODERATE TSTMS WITHIN 90 NM 

OF SECOND TROUGH. 

.24 HOUR FORECAST COMPLEX LOW 24N164W 1007 MB. NEW SECOND LOW 

26N156W 1009 MB. WARM FRONT FROM SECOND LOW TO 27N155W 28N152W 

28N150W. TROUGH FROM SECOND LOW TO 24N158W TO FIRST LOW TO 21N170W 

20N175W. SECOND TROUGH 24N158W 22N159W 15N167W 12N172W 11N180W. 

WINDS 30 TO 35 KT N OF A LINE 30N149W 25N158W 27N165W. WINDS 20 TO 

30 KT ELSEWHERE N OF LINE 26N148W 25N157W 24N172W. 

.48 HOUR FORECAST COMPLEX LOW 26N161W 1007 MB. SECOND LOW NEAR 

30N155W 1006 MB. STATIONARY FRONT FROM FIRST LOW TO 26N158W TO 

SECOND LOW. TROUGH FROM SECOND LOW TO 25N157W 16N163W 12N171W. 

WINDS 20 TO 30 KT N OF A LINE 30N146W 26N148W 23N154W 25N169W. 





.SYNOPSIS AND FORECAST.



.TROUGH 30N144W 26N149W 23N152W 21N156W MOVING NW 10 KT. ISOLATED 

MODERATE TSTMS WITHIN 270 NM E AND SE OF TROUGH S OF 27N.

.24 HOUR FORECAST TROUGH MERGED WITH COMPLEX LOW DESCRIBED ABOVE.



.FRONT 30N179W 27N179W MOVING NE SLOWLY. 

.24 HOUR FORECAST FRONT 30N178W 28N179W. 

.48 HOUR FORECAST FRONT MOVED N OF AREA. 



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



.SEAS 3 TO 4.5 M N OF A LINE 30N154W 26N159W 23N170W 25N180W. SEAS 

2.5 TO 3 M ELSEWHERE NW OF A LINE 30N143W 25N151W 22N164W 15N173W

12N180W.

.24 HOUR FORECAST SEAS 4 TO 5.5 M N OF LINE 30N148W 27N151W 

23N164W 21N174W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N144W 

24N149W 13N170W 13N180W.

.48 HOUR FORECAST SEAS 4 TO 5 M N OF A LINE 30N155W 23N162W 24N168W.

SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N145W 19N158W 12N165W 

11N180W.



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



.ITCZ 06N149W 07N152W 08N159W 06N173W 06N180W.





$$



.FORECASTER TSAMOUS. HONOLULU HI.