060
FZPS40 PHFO 202242
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC WED AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 21 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 22 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S159W TO 16S170W THENCE TROUGH TO 12S180E TO 11S165E
TO 10S160E MOVING E 10 KT. ISOLATED MODERATE TSTMS WITHIN 210 NM
OF TROUGH W OF 174E.
.24 HOUR FORECAST FRONT WEAKENED TO A TROUGH FROM 25S154W TO
20S160W.
.48 HOUR FORECAST TROUGH FROM 25S140W TO 18S150W.

.TROUGH FROM 22S168E TO 22S165E TO 20S160E MOVING E 10 KT.
.24 HOUR FORECAST TROUGH FROM 21S173E TO 20S160E.
.48 HOUR FORECAST TROUGH FROM 25S170W TO 17S175E.

.TROUGH FROM 14S161W TO 07S172W TO 06S175W TO 06S176E MOVING SW
SLOWLY. ISOLATED MODERATE TSTMS WITHIN 180 NM OF TROUGH BETWEEN
163W AND 176E.
.24 HOUR FORECAST TROUGH FROM 17S156W TO 10S170W TO 05S180E.
.48 HOUR FORECAST TROUGH FROM 17S160W TO 12S177W TO 07S175E.

.TROUGH FROM 25S135W TO 23S137W TO 20S143W MOVING S SLOWLY.
ISOLATED MODERATE TSTMS WITHIN 150 NM E OF TROUGH S OF 24S.
.24 HOUR FORECAST TROUGH FROM 25S145W TO 21S148W.
.48 HOUR FORECAST TROUGH MOVED S OF AREA.

.SE WINDS 20 TO 30 KT BETWEEN TWO LINES FROM 15S176W TO 25S166E
AND FROM 06S180E TO 12S160E.
.24 HOUR FORECAST SE WINDS 20 TO 30 KT BETWEEN TWO LINES FROM
15S176W TO 25S173E AND FROM 06S178E TO 08S160E.
.48 HOUR FORECAST SE WINDS 20 TO 25 KT FROM 20S TO 07S W OF 178E.

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

.SEAS 2.5 TO 3.5 M S OF A LINE FROM 25S170W TO 20S175W TO 06S176W
10S160E. SEAS 2 TO 3 M E OF 135W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF A LINE FROM 25S161W TO
06S180W TO 08S160E. SEAS 2.5 TO 3 M S OF 02S E OF 135W.
.48 HOUR FORECAST SEAS 2.5 TO 3.5 M FROM 17S TO 06S W OF 179E.
SEAS 2.5 TO 3 M ELSEWHERE S OF A LINE FROM 07S180E TO 04S170E TO
07S160E. SEAS 2.5 TO 3 M S OF 03S E OF 131W.

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


$$

.FORECASTER TSAMOUS. HONOLULU HI.