FZPN40 PHFO 202116

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

2300 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAR 20 2026.

24 HOUR FORECAST VALID 1800 UTC MAR 21 2026.

48 HOUR FORECAST VALID 1800 UTC MAR 22 2026.



.WARNINGS.





...GALE WARNING...

.COMPLEX LOW 24N162W 1007 MB NEARLY STATIONARY. WARM FRONT FROM 

LOW TO 28N158W THENCE STATIONARY FRONT 30N146W MOVING NE SLOWLY. 

TROUGH FROM 22N160W 15N168W 12N180W MOVING NE SLOWLY. SECOND 

TROUGH FROM LOW TO 22N170W 21N180W. MOVING SE SLOWLY. WINDS 30 TO 

35 KT WITHIN 180 NM N OF WARM FRONT. WINDS 20 TO 30 KT ELSEWHERE N

OF LINE 30N146W 25N158W 24N173W. SCATTERED MODERATE TSTMS WITHIN 

180 NM N OF WARM FRONT AND SECOND TROUGH BETWEEN LOW AND 170W. 

ISOLATED MODERATE TSTMS FROM 16N TO 24N BETWEEN 151W AND 163W.

.24 HOUR FORECAST COMPLEX LOW 24N163W 1008 MB. NEW SECOND LOW 

26N156W 1008 MB. WARM FRONT 30N147W 30N150W TO SECOND LOW TO FIRST

LOW. TROUGH FROM FIRST LOW 18N170W. SECOND TROUGH 25N155W 

13N168W. WINDS 30 TO 35 KT N OF 28N BETWEEN 152W AND 155W. WINDS 

20 TO 30 KT ELSEWHERE N OF LINE 30N145W 27N150W 25N167W 25N170W. 

.48 HOUR FORECAST COMPLEX LOW 28N153W 1006 MB. SECOND LOW MOVED N

OF AREA. FRONT 30N152W 28N155W 26N162W. TROUGH 30N151W TO FIRST 

LOW TO 16N166W. WINDS 20 TO 25 KT N 24N BETWEEN 145W AND TROUGH. 



.SYNOPSIS AND FORECAST.



.FRONT 30N178W 24N179W NEARLY STATIONARY AND DISSIPATING. 

.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 30N178W 27N180W. 

.48 HOUR FORECAST TROUGH DISSIPATED. 



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



.SEAS 3 TO 4.5 M N OF 23N BETWEEN 158W AND 173W. SEAS 2.5 TO 3 M 

ELSEWHERE NW OF A LINE 30N146W 23N160W 18N170W 15N180W.

.24 HOUR FORECAST SEAS 4 TO 6 M N OF LINE 30N150W 25N160W 25N166W

30N170W. SEAS 2.5 TO 4 M ELSEWHERE N OF LINE 30N145W 25N150W 

21N160W 14N170W 11N180W.

.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 30N147W 20N160W 

12N170W 10N180W.



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



.ITCZ 02N140W 03N157W 06N164W 05N180W. SCATTERED MODERATE TSTMS 

WITHIN 90 NM OF ITCZ BETWEEN 160W AND 170W. ISOLATED MODERATE 

TSTMS WITHIN 180 NM OF ITCZ W OF 170W. 



$$



.FORECASTER ALMANZA. HONOLULU HI.