770
FZPS40 PHFO 231433
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SAT AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 23 2025.
24 HOUR FORECAST VALID 1200 UTC AUG 24 2025.
48 HOUR FORECAST VALID 1200 UTC AUG 25 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 25S131W 20S135W MOVING SE SLOWLY.
.24 HOUR FORECAST TROUGH 25S130W 22S135W.
.48 HOUR FORECAST TROUGH 25S122W 17S136W.

.TROUGH 25S150W 20S170W 08S170E 06S160E MOVING W 10 KT S OF
21S...AND NEARLY STATIONARY ELSEWHERE. WINDS 20 TO 25 KT S OF
TROUGH. SCATTERED MODERATE TSTMS FROM 10S TO 06S W OF 173E.
ISOLATED MODERATE TSTMS WITHIN 90 NM OF TROUGH E OF 177W.
.24 HOUR FORECAST TROUGH 25S167W 17S170W 10S175E 06S160E. WINDS
MAINLY 20 TO 25 KT S OF TROUGH... AND S OF 20S BETWEEN TROUGH AND
160W.
.48 HOUR FORECAST TROUGH 25S161W 18S170W 10S177E. WINDS DIMINISHED
TO 20 KT OR LESS.

.TROUGH 20S148W 15S154W 09S158W MOVING W 15 KT. WINDS 20 TO 25 KT
FROM 20S TO 10S BETWEEN 160W AND 140W.
.24 HOUR FORECAST TROUGH 19S160W 13S167W. WINDS 20 TO 25 KT FROM
20S TO 10S BETWEEN 160W AND 145W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW FRONT 25S166E 21S168E 14S160E. WINDS 20 TO
25 KT S OF 18S BETWEEN FRONT AND 180W.
.48 HOUR FORECAST FRONT 25S175E 20S173E 15S170E 11S160E. WINDS 20
TO 30 KT S OF 20S BETWEEN FRONT AND 175W... AND S OF 20S W OF 167E.

.48 HOUR FORECAST WINDS 20 TO 25 KT S OF 10S BETWEEN 155W AND 140W...
AND FROM 15S TO 10S E OF 140W.

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

.SEAS 2.5 TO 3.0 M S OF A LINE 20S170W 07S170E 06S160E... AND S OF
04S E OF 130W.
.24 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 15S140W 08S150W 08S170W.
SEAS 2.5 TO 3.0 M S OF 15S BETWEEN 170E AND 180W... AND FROM 16S
TO 04S E OF 131W.
.48 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF 20S W OF 170W... AND S OF 08S
E OF 170W.

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

$$

.FORECASTER SHIGESATO. HONOLULU HI.