587
FZPS40 PHFO 101521
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC FRI OCT 10 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 10 2025.
24 HOUR FORECAST VALID 1200 UTC OCT 11 2025.
48 HOUR FORECAST VALID 1200 UTC OCT 12 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 16S120W 13S130W 13S145W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 17S120W 13S131W 14S143W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.FRONT 25S149W 22S155W MOVING E SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF FRONT.
.24 HOUR FORECAST FRONT 25S145W 20S153W.
.48 HOUR FORECAST FRONT 25S138W 21S144W.

.TROUGH 16S176W 09S170E 06S160E NEARLY STATIONARY. WINDS 20 TO 25
KT FROM 15S TO BETWEEN 164E AND 172E. SCATTERED MODERATE TO
STRONG TSTMS N OF 15S W OF 174E...AND WITHIN 240 NM ELSEWHERE.
.24 HOUR FORECAST TROUGH 11S164W 11S173E 08S160E. WINDS 20 TO 25
KT FROM 14S TO 11S BETWEEN 163E AND 169E...AND FROM 19S TO 14S
BETWEEN 179W AND 170W.
.48 HOUR FORECAST TROUGH 14S163W 12S179E 09S160E. WINDS 20 TO 25
KT FROM 19S TO 13S BETWEEN 176E AND 177W.

.TROUGH 10S165W 09S176W MOVING SW 10 KT. ISOLATED MODERATE TSTMS
WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED ABOVE.

.WINDS 20 TO 30 KT FROM 23S TO 17S BETWEEN 179E AND 164W.
.24 HOUR FORECAST WINDS EASED 20 KT OR LESS.

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

.SEAS 2.5 TO 4 M S OF LINE 10S160E 08S174E 15S176W 10S174W
04S152W 10S143W 10S123W 02S123W 03S120W...EXCEPT S OF 20S W OF
169E...AND S OF 20S BETWEEN 161W AND 145W.
.24 HOUR FORECAST SEAS 2.5 TO 3 M S OF LINE 12S160E 13S174E
06S158W 18S163W 21S154W 25S146W...EXCEPT S OF 13S W OF 170E.
.48 HOUR FORECAST SEAS 2.5 TO 3 M IN AREA BOUNDED BY 20S170E
17S179W 13S174E 13S175W 16S158W 25S138W 25S153W 23S170W 18S174W
22S17E 20S170E.

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


$$

.FORECASTER . HONOLULU HI.