837
FZPN40 PHFO 181524
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC NOV 18 2025.
24 HOUR FORECAST VALID 1200 UTC NOV 19 2025.
48 HOUR FORECAST VALID 1200 UTC NOV 20 2025.

.WARNINGS.

...GALE WARNING...
.FRONT 30N160W 23N170W 22N176E THENCE TROUGH 23N168E 21N160E MOVING
E 25 KT. WINDS 30 TO 35 KT N OF FRONT E OF 175W. WINDS 20 TO 30
KT AND SEAS 3 TO 5 M N OF FRONT AND TROUGH. ISOLATED MODERATE TSTMS
WITHIN 90 NM OF TROUGH W OF 165E.
.24 HOUR FORECAST FRONT 30N153W 26N150W 20N170W 20N180W THENCE TROUGH
23N171E. WINDS 20 TO 30 KT N OF FRONT AND TROUGH E OF 174E. SEAS
2.5 TO 4.5 M N OF FRONT AND TROUGH.
.48 HOUR FORECAST FRONT BECAME TROUGH 30N167W 22N168W. WINDS 20 TO
30 KT FROM 20N TO 26N BETWEEN 150W AND 178E. SEAS 3 TO 4.5 M N OF
A LINE 30N147W 18N173W 18N173E. ADDITIONAL SEAS INCLUDED BELOW.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST NEW FRONT 30N167E 25N160E.
.48 HOUR FORECAST FRONT 30N176E 25N160E. WINDS 20 TO 25 KT N OF FRONT.

.TROUGH 18N153W 11N155W MOVING NW 20 KT.
.24 HOUR FORECAST TROUGH 26N158W 20N160W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IN WARNING SECTION
ABOVE.

.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 10N TO 15N W OF 170E.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 15N TO 25N BETWEEN 170E
AND 178W... AND FROM 12N TO 25N E OF 160W.

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

.24 HOUR FORECAST SEAS 2.5 TO 3 M FROM 10N TO 20N W OF 180E.
.48 HOUR FORECAST SEAS 2.5 TO 4 M N OF 20N BETWEEN 180W AND 150W. SEAS
2.5 TO 3 M FROM 10N TO 20N.

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

.ITCZ 08N140W 08N155W 07N162W 08N175E 06N169E. ISOLATED MODERATE
TSTMS FROM 04N TO 10N BETWEEN 170E AND 180W.

.ISOLATED MODERATE TSTMS FROM 12N TO 16N BETWEEN 164E AND 170E...AND
FROM 15N TO 20N BETWEEN 160W AND 150W.

$$

.FORECASTER SHIGESATO. HONOLULU HI.