051
FZPS40 PHFO 171450
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN AUG 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

SOUTH PACIFIC EQUATOR TO 25S BETWEEN 120W AND 160E

SYNOPSIS VALID 1200 UTC AUG 17 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 18 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 19 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 25S170W 18S175W 15S176E MOVING SE 10 KT. WINDS 20 TO 25 KT
S OF 21S BETWEEN FRONT AND 164W.
.24 HOUR FORECAST FRONT 25S166W 14S180W. WINDS EASED TO 20 KT OR
LESS.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S164W 14S176W.

.FRONT 25S133W 15S150W 13S161W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S132W 18S140W 14S150W.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S135W 14S147W 11S154W.

.FRONT 25S139W 21S147W MOVING SE SLOWLY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S138W 21S147W
20S150W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH 16S141W 13S144W 08S147W MOVING NW SLOWLY.
.24 HOUR FORECAST DISSIPATED.

.TROUGH 14S167E 10S160E MOVING W 10 KT.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.48 HOUR FORECAST NEW TROUGH 11S146W 04S157W.

.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 2.5 TO 4.5 M S OF LINE 25S180E 15S150W 25S157W. SEAS 2.5 TO
3 M FROM 17S TO 04S E OF 130W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M S OF LINE 07S160W 18S140W
05S120W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M S OF LINE 15S150W 20S130W... AND S
OF 04S E OF 130W.

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

.ISOLATED MODERATE TSTMS N OF 24S BETWEEN 174E AND 178E... AND
FROM 06S TO 03S BETWEEN 164E AND 167E.

$$

.FORECASTER SHIGESATO. HONOLULU HI.