055
FZPN40 PHFO 311528
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN AUG 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 31 2025.
24 HOUR FORECAST VALID 1200 UTC SEP 01 2025.
48 HOUR FORECAST VALID 1200 UTC SEP 02 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 15N156W 1010MB. TROUGH 16N154W TO LOW TO 12N158W NEARLY
STATIONARY. ISOLATED TSTMS WITHIN 150 NM W OF LOW.
.24 HOUR FORECAST LOW WEAKENS TO TROUGH FROM 15158W TO 13N158W
11N159W.
.48 HOUR FORECAST TROUGH FROM 15N177W 11N177W.

.LOW 13N173W 1010MB. TROUGH 16N170W 15N172W TO LOW TO 12N174W
08N171W. ISOLATED TSTMS WITHIN 120 NM W OF TROUGH.
.24 HOUR FORECAST LOW 15N158W. TROUGH 16N168W TO LOW TO 12N158W.
.48 HOUR FORECAST LOW 14N162W. TROUGH DISSIPATED.

.FRONT 30N155W 29N160W 29N168W 30N170W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT 30N154W 29N160W 29N168W.
.48 HOUR FORECAST FRONT DISSIPATED.

.TROUGH 30N150W 28N153W 27N158W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH 30N149W 28N153W 28N160W.
.48 HOUR FORECAST TROUGH 30N148W 27N157W.

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

.ITCZ 09N140W 09N146W 10N150W...11N158W 11N161W 10N164W 10N168W...
AND 11N177W 9N176E 10N171E 11N165E. ISOLATED TSTMS WITHIN 150 NM
OF ITCZ.

$$

.FORECASTER M BALLARD. HONOLULU HI.