FZPN40 PHFO 192230

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

2300 UTC THU MAR 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAR 19 2026.

24 HOUR FORECAST VALID 1800 UTC MAR 20 2026.

48 HOUR FORECAST VALID 1800 UTC MAR 21 2026.



.WARNINGS.





...GALE WARNING...

.LOW 23N165W 1007 MB NEARLY STATIONARY. WARM FRONT FROM LOW TO 24N165W 

26N164W 25N162W 24N158W MOVING E SLOWLY. TROUGH FROM LOW 19N166W 

17N170W 14N180W MOVING E SLOWLY. SECOND TROUGH FROM LOW 22N174W 

MOVING SE SLOWLY. E WINDS 20 TO 30 KT N OF OF LINE 30N145W 25N155W

24N172W. ISOLATED MODERATE TSTMS WITHIN 180 NM N OF FRONT. 

.24 HOUR FORECAST LOW 24N166W 1008 MB. WARM FRONT REDEVELOPED 

FROM LOW TO 24N161W 23N160W. TROUGH FROM LOW TO 22N161W 20N162W 

13N170W. SECOND TROUGH FROM LOW 21N172W 20N180W. E WINDS 20 TO 30 

KT N OF A LINE 30N146W 24N157W 24N172W.

.48 HOUR FORECAST COMPLEX LOW 26N164W 1007 MB. NEW SECOND LOW 

NEAR 27N156W 1008 MB. STATIONARY FRONT FORM FIRST LOW TO SECOND 

LOW. WARM FRONT FROM SECOND LOW 28N153W 27N150W. TROUGH FROM LOW 

TO 20N167W 15N168W. WINDS 30 TO 35 KT WITHIN 180 NM N SEMICIRCLE 

OF LOWS. WINDS 20 TO 30 KT ELSEWHERE N OF A LINE 27N147W 27N156W 

23N170W. 



.SYNOPSIS AND FORECAST.



.TROUGH 26N150W 23N151W 18N155W MOVING NW SLOWLY. ISOLATED 

MODERATE TSTMS WITHIN 270 NM E AND SE OF TROUGH.

.24 HOUR FORECAST TROUGH 27N151W 23N155W.

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



.COLD FRONT 30N147W 27N150W MOVING NE 10 KT. 

.24 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 25N BETWEEN 162W AND 174W. SEAS 2.5 TO 3 M 

ELSEWHERE NW OF A LINE 30N150W 25N160W 18N180W.

.24 HOUR FORECAST SEAS 4 TO 5 M N OF 24N BETWEEN 157W AND 174W. 

SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N144W 22N160W 16N180W.

.48 HOUR FORECAST SEAS 4 TO 5.5 M N OF 25N BETWEEN 152W AND 170W.

SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N146W 25N150W 15N170W 

12N180W.



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



.ITCZ 01N140W 01N150W.



.ISOLATED MODERATE TSTMS FROM 05N TO 08N BETWEEN 152W AND 180W.





$$



.FORECASTER ALMANZA. HONOLULU HI.