538
FZPS40 PHFO 282245
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC THU AUG 28 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC AUG 28 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 29 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 30 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 25S122W 21S128W 19S133W 17S139W 18S147W. FRONT MOVING E 15
KT E OF 130W AND NEARLY STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT 21S120W 17S130W 17S146W THENCE NEW TROUGH
16S161W.
.48 HOUR FORECAST FRONT MOVED E OF AREA. TROUGH 19S126W 18S136W
17S150W 13S158W.

.FRONT 25S167W 21S172W THENCE TROUGH 16S176W 10S176W 07S179W.
FRONT MOVING E SLOWLY AND TROUGH NEARLY STATIONARY.
.24 HOUR FORECAST FRONT 25S164W 21S170W THENCE TROUGH 15S175W
08S179W.
.48 HOUR FORECAST FRONT 25S156W 21S164W. TROUGH DETACHED 19S177E
13S175E 08S165E 06S160E.

.TROUGH 18S165E 13S168E 10S172E MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH 19S162E 13S164E 07S167E.
.48 HOUR FORECAST TROUGH MERGES WITH TROUGH DESCRIBED ABOVE.

.24 HOUR FORECAST NEW FRONT 25S165E 23S160E.
.48 HOUR FORECAST FRONT 25S170E 20S160E. WINDS 20 TO 25 KT S OF
20S W OF 165E.

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

.SEAS 2.5 TO 4 M S OF LINE 25S161W 19S159W 14S171W 04S171W
04S164W 10S161W 07S154W 02S153W 01S142W 08S139W 00S130W EXCEPT IN
AREA BOUNDED BY 16S152W 07S144W 08S139W 18S132W 16S152W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 25S146W 18S152W
18S141W 05S136W 01S120W. SEAS 2.5 TO 3 M FROM 14S TO 01S BETWEEN
162W AND 147W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M S OF 04S E OF 140W.

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

.ISOLATED MODERATE TSTMS FROM 06S TO 01S W OF 163E.

$$

.FORECASTER TROTTER. HONOLULU HI.