FZPN40 PHFO 181516

HSFNP 



HIGH SEAS FORECAST

NATIONAL WEATHER SERVICE HONOLULU HI

1700 UTC SAT JUL 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 18 2026.

24 HOUR FORECAST VALID 1200 UTC JUL 19 2026.

48 HOUR FORECAST VALID 1200 UTC JUL 20 2026.



.WARNINGS.



.NONE.

   

.SYNOPSIS AND FORECAST.



.LOW NEAR 14N172W 1009 MB MOVING W SLOWLY. WINDS 20 TO 25 KT FROM

19N TO 16N BETWEEN 172W AND 169W.

.24 HOUR FORECAST LOW NEAR 13N177W. WINDS EASED 20 KT OR LESS.

.48 HOUR FORECAST LOW MOVED W OF AREA.



.LOW NEAR 05N152W 1008 MB NEARLY STATIONARY. ISOLATED MODERATE

TSTMS WITH 180 NM OF LOW. 

.24 HOUR FORECAST LOW DISSIPATED.



.TROUGH 30N173W 26N176W NEARLY STATIONARY. ISOLATED TSTMS N OF 

26N W OF 169W. 

.24 HOUR FORECAST TROUGH DISSIPATED. 



.WINDS 20 TO 25 KT FROM 19N TO 12N BETWEEN 158W AND 148W.

.24 HOUR FORECAST WINDS EASED 20 KT OR LESS.



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



.SEAS 2.5 TO 3 M FROM 21N TO 14N BETWEEN 174W AND 165W...AND FROM

24N TO 11N BETWEEN 157W AND 144W.

.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 19N TO 16N BETWEEN 178W 

AND 173W...AND FROM 19N TO 09N BETWEEN 162W AND 148W.

.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 17N TO 09N BETWEEN 168W 

AND 154W.



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



.MONSOON TROUGH 07N140W 07N144W TO FIRST LOW NEAR 05N152W TO 

03N155W 03N159W 12N169W TO SECOND LOW NEAR 14N172W 13N175W 

08N180W. ISOLATED MODERATE TSTMS WITHIN 210 NM OF MONSOON TROUGH.



.ISOLATED MODERATE TSTMS N OF 26N BETWEEN 170W AND 166W...AND FROM

13N TO 09N E OF 156W.





$$



.FORECASTER PIERCE. HONOLULU HI.