576
FZPN40 PHFO 052238
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SUN OCT 05 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC OCT 05 2025.
24 HOUR FORECAST VALID 1800 UTC OCT 06 2025.
48 HOUR FORECAST VALID 1800 UTC OCT 07 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 30N154W 25N160W 25N166W MOVING SW 10 KT.
.24 HOUR FORECAST TROUGH 25N155W 24N160W 24N165W.
.48 HOUR FORECAST TROUGH 23N153W 20N165W.

.TROUGH 26N143W 25N145W 20N144W MOVING NW SLOWLY.
.24 HOUR FORECAST TROUGH 26N144W 20N148W 18N150W.
.48 HOUR FORECAST TROUGH 26N147W 20N150W.

.TROUGH 11N153W 08N153W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH 11N155W 08N156W.
.48 HOUR FORECAST TROUGH 11N158W 08N158W.

.LOW 09N145W 1012 MB. TROUGH FROM LOW TO 07N145W. LOW AND TROUGH
MOVING W 10 KT.
.24 HOUR FORECAST LOW 10N145W 1011 MB. TROUGH FROM LOW TO 08N143W.
.48 HOUR FORECAST LOW WEAKENS TO TROUGH. TROUGH 11N143W 08N144W.

.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.

.24 HOUR FORECAST SEAS 2.5 TO 3 M N OF 25N BETWEEN 155W AND 165W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M N OF 25N BETWEEN 158W AND 170W.

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

.ITCZ 10N140W 10N143W...AND 10N145W 10N150W...THENCE MONSOON
TROUGH 09N155W 09N160W...THENCE ITCZ 08N163W 11N170W 12N180W
05N165E. ISOLATED TO SCATTERED TSTMS WITHIN 150 NM OF TROUGH AND
ITCZ.

.SCATTERED MODERATE TSTMS 12N TO 30N BETWEEN 180W AND 170E.

$$

.FORECASTER PECHACEK. HONOLULU HI.