103
FZPN40 PHFO 010312
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 01 2025.
24 HOUR FORECAST VALID 0000 UTC SEP 02 2025.
48 HOUR FORECAST VALID 0000 UTC SEP 03 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 14N157W 1011 MB MOVING W 10 KT. TROUGH FROM LOW TO 17N155W
AND FROM LOW TO 13N156W 11N156W. SCATTERED MODERATE TSTMS WITHIN
150 NM OF TROUGH AND LOW.
.24 HOUR FORECAST LOW 14N160W 1012 MB. TROUGH FROM LOW TO 15N160W
AND FROM LOW TO 13N160W.
.48 HOUR FORECAST LOW WEAKENS TO TROUGH. TROUGH 15N165W 10N164W.

.LOW 30N169W 1015 MB MOVING N 10 KT. TROUGH FROM LOW TO 28N175W.
.24 HOUR FORECAST LOW MOVED N OF AREA.

.LOW 12N174W 1011 MB MOVING W 10 KT. TROUGH FROM LOW TO 15N175W
AND FROM LOW TO 08N174W.
.24 HOUR FORECAST LOW WEAKENS TO TROUGH 15N174W 10N174W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 22N161W 19N162W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 30N147W 28N150W 27N154W 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.

.MONSOON TROUGH 09N140W 08N145W THENCE ITCZ 09N147W 07N150W
08N155W...AND 12N160W 13N169W 14N173W. MONSOON TROUGH CONTINUES
12N180W 08N170E 06N160E. ISOLATED MODERATE TSTMS WITHIN 150 NM OF
MONSOON TROUGH AND ITCZ.

.ISOLATED MODERATE TSTMS WITHIN 120 NM OF POINT 21N170E.

$$

.FORECASTER PECHACEK. HONOLULU HI.