260
FZPS40 PHFO 212159
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC THU AUG 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 21 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 22 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 23 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 25S155W 19S165W THENCE TROUGH 16S177W 12S173E 08S160E.
FRONT MOVING E SLOWLY AND TROUGH NEARLY STATIONARY. WINDS 20 TO
30 KT FROM 17S TO 07S W OF 174W. ISOLATED MODERATE TSTMS FROM 11S
TO 06S W OF 170E...AND WITHIN 210 NM S OF FRONT.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S148W 16S170W
09S172E 07S160E. WINDS 20 TO 25 KT IN AREA BOUNDED BY 07S160E
17S176E 18S166W 21S167W 15S170E 21S166E 20S161E 14S165E 14S160E
07S160E.
.48 HOUR FORECAST TROUGH FROM 25S147W 23S165W 16S179W TO 09S168E
09S160E. WINDS 20 TO 25 KT IN AREA BOUNDED BY 15S176E 16S160W
25S149W 25S168W 20S172E 15S176E.

.TROUGH 10S174W 08S178E 05S170E MOVING SW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED ABOVE.

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

.SEAS 2.5 TO 4 M S OF 06S W OF 173W EXCEPT FROM 22S TO 15S
BETWEEN 163E AND 169E...AND S OF 02S E OF 138W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 05S160E 06S178E
14S172W 17S163W 25S157W...AND E OF LINE 02S120W 07S136W 12S145W
17S139W 25S128W.
.48 HOUR FORECAST SEAS 2.5 TO 3 M S OF LINE 09S160E 08S170E
16S175W 17S168W 00S165W 00S158W 08S153W 10S142W 15S140W 16S152W
25S145W EXCEPT FROM 23S TO 13S BETWEEN 166E AND 169E...AND E OF
LINE 01S120W 07S131W 15S132W 23S120W.

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


$$

.FORECASTER PIERCE. HONOLULU HI.