303
FZPN40 PHFO 180317
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC TUE NOV 18 2025

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 160E

SYNOPSIS VALID 0000 UTC NOV 18 2025.
24 HOUR FORECAST VALID 0000 UTC NOV 19 2025.
48 HOUR FORECAST VALID 0000 UTC NOV 20 2025.

.WARNINGS.



...GALE WARNING...
.FRONT 30N167W 26N174W 23N178E 23N174E THENCE TROUGH 21N160E MOVING
E 25 KT. WINDS 20 TO 30 KT AND SEAS 3 TO 4 M N OF FRONT AND TROUGH.
ISOLATED MODERATE TSTMS WITHIN 90 NM OF FRONT AND TROUGH.
.06 HOUR FORECAST FRONT 30N163W 26N170W 23N180E THENCE TROUGH TO
22N160E. NE WINDS 25 TO 35 KT N OF FRONT E OF 180E. WINDS 20 TO 30
KT ELSEWHERE AND SEAS 3 TO 4.5 M N OF FRONT AND TROUGH.
.24 HOUR FORECAST FRONT 30N154W 22N162W 20N180W THENCE TROUGH
21N160E. WINDS 20 TO 30 KT N OF FRONT AND TROUGH E OF 174E. SEAS 3
TO 4.5 M N OF FRONT AND TROUGH.
.48 HOUR FORECAST FRONT BECAME TROUGH 30N143W 27N164W 22N174W.
WINDS 20 TO 30 KT N OF 20N BETWEEN 150W AND 178E. SEAS 3 TO 4.5 M
N OF A LINE 30N147W 18N173W 18N173E. ADDITIONAL SEAS INCLUDED
BELOW.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST NEW FRONT 30N169E 27N164E 26N160E.

.24 HOUR FORECAST NEW TROUGH 28N153W 12N154W.
.48 HOUR FORECAST TROUGH 25N146W 19N154W.

.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 09N TO 18N W OF 180E.
.48 HOUR FORECAST ENE WINDS 20 TO 25 KT FROM 10N TO 25N E OF
168W...AND FROM 10N TO 20N W OF 176E.

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

.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF 10N.

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

.ITCZ 08N140W 09N157W 09N172W 08N178W 10N170E 08N167E...AND
05N167E 04N160E. SCATTERED MODERATE TSTMS WITHIN 150 NM OF ITCZ.

.ISOLATED MODERATE TSTMS FROM 11N TO 18N BETWEEN 148W AND 155W.

$$

.FORECASTER TSAMOUS. HONOLULU HI.