170
FZPN40 PHFO 120940
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC SUN OCT 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC OCT 12 2025.
24 HOUR FORECAST VALID 0600 UTC OCT 13 2025.
48 HOUR FORECAST VALID 0600 UTC OCT 14 2025.

.WARNINGS.


.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 30N174E 25N160E MOVING NE 15 KT.
.24 HOUR FORECAST FRONT 30N178W 27N170E 30N162E.
.48 HOUR FORECAST FRONT 30N170W 28N177W.

.TROUGH 30N150W 25N156W 23N163W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 30N158W 22N161W.
.48 HOUR FORECAST TROUGH 30N156W 22N158W.

.TROUGH 14N160W 03N160W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 13N164W 07N164W.
.48 HOUR FORECAST TROUGH DISSIPATED..

.TROUGH 10N171E 02N176E MOVING W 10 KT.
.24 HOUR FORECAST 10N167E 02N169E.
.48 HOUR FORECAST 08N160E 02N170E.

.WINDS 20 KT OR LESS OVER ENTIRE AREA.

.SEAS 4 TO 5 M N OF 25N BETWEEN 162E AND 178W. SEAS 2.5 TO
4 M ELSEWHERE N OF LINE 30N170W 20N170E 20N160E.
.24 HOUR FORECAST SEAS 2.5 TO 4 M N OF LINE 22N160E 13N170E
11N180W 30N160W.
.48 HOUR FORECAST SEAS 2.5 TO 3.5 M N OF 10N BETWEEN 167E AND 165W.

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

.ITCZ 08N140W 09N144W 07N150W 09N157W... AND 09N163W 07N167W 07N172W.
ISOLATED MODERATE TSTMS WITHIN 180 NM OF ITCZ BETWEEN 173W AND 163W.

.SCATTERED MODERATE TSTMS WITHIN 150 NM OF A LINE 15N160E 20N163E.

$$

.FORECASTER SHIGESATO. HONOLULU HI.