314
FZPN40 PHFO 011029
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC MON SEP 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 01 2025.
24 HOUR FORECAST VALID 0600 UTC SEP 02 2025.
48 HOUR FORECAST VALID 0600 UTC SEP 03 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 15N158W 1013 MB MOVING W 10 KT. TROUGH 18N156W TO LOW TO
10N158W.
.24 HOUR FORECAST LOW 14N161W 1013 MB. TROUGH 15N160W TO LOW TO
13N160W.
.48 HOUR FORECAST LOW WEAKENS TO TROUGH. TROUGH 17N165W 10N166W.

.LOW 30N169W 1015 MB MOVING N 10 KT. TROUGH FROM LOW TO 29N173W.
.24 HOUR FORECAST LOW MOVED N OF AREA.

.LOW 13N176W 1012 MB MOVING W 10 KT. TROUGH FROM 15N173W TO LOW TO
09N174W 06N176W. ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH
AND LOW.
.24 HOUR FORECAST LOW WEAKENS TO TROUGH. TROUGH 15N174W 10N174W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 25N168W 20N167W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N147W 26N153W MOVING N SLOWLY.
.24 HOUR FORECAST TROUGH 30N146W 27N150W.
.48 HOUR FORECAST TROUGH MOVED N OF AREA.

.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER ENTIRE FORECAST
AREA.

.ITCZ 09N140W 08N145W 09N150W 08N158W...AND 11N160W 11N166W 12N170W 12N173W.
MONSOON TROUGH 12N175E 10N166E 07N160E. ISOLATED MODERATE TSTMS WITHIN 150
NM OF ITCZ.

$$

.FORECASTER M BALLARD. HONOLULU HI.