012
FZPN40 PHFO 180238
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI SEP 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 18 2026.
24 HOUR FORECAST VALID 0000 UTC SEP 19 2026.
48 HOUR FORECAST VALID 0000 UTC SEP 20 2026.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 10N158W 1008 MB MOVING W SLOWLY. SCATTERED MODERATE
TSTMS WITHIN 240 NM N SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW NEAR 10N160W 1010 MB.
.48 HOUR FORECAST LOW NEAR 13N160W 1010 MB.

.TROUGH FROM 30N153W 27N155W 17N158W MOVING W 10 KT. ISOLATED
MODERATE WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST21 TROUGH DISSIPATED.

.48 HOUR FORECAST NEW LOW 15N140W 1008 MB. TROUGH FROM NEW LOW TO
25N140W.

.ENE WINDS 20 TO 25 KT FROM 15N TO 22N E OF 145W.
.24 HOUR FORECAST ENE WINDS 20 TO 25 KT FROM 16N TO 23N E OF 146W.
.48 HOUR FORECAST ENE WINDS 20 TO 25 KT FROM 16N TO 25N E OF 148W.

.SEAS 2.5 TO 3 M FROM 15N TO 23N E OF 152W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 13N TO 24N E OF
153W...AND FROM 17N TO 27N BETWEEN 163W AND 174W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M FROM 14N TO 23N BETWEEN 154W AND
142W.

.OTHERWISE...WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER THE
REMAINDER OF FORECAST AREA.

.MONSOON TROUGH 08N140W 12N154W 06N164W 06N168W 15N180W. ISOLATED
MODERATE TSTMS WITHIN 180 NM N OF TROUGH E OF 170W...AND FROM 04N
TO 14N W OF 170W.



$$

.FORECASTER TSAMOUS. HONOLULU HI.