The High Seas Forecast for the South Pacific

High Seas Forecast Issued: 09/10/2025 01:09:33 AM UTC
                        
659
FZPS40 PHFO 091509
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC TUE SEP 09 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 09 2025.
24 HOUR FORECAST VALID 1200 UTC SEP 10 2025.
48 HOUR FORECAST VALID 1200 UTC SEP 11 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 22S148W 1009 MB MOVING SW SLOWLY. FRONT FROM 23S142W TO
LOW TO 18S143W TO 16S145W THENCE TROUGH TO 08S160W. FRONT AND TROUGH
NEARLY STATIONARY. WINDS 20 TO 30 KT S OF 20S BETWEEN 165W AND
148W.
.24 HOUR FORECAST LOW NEAR 24S151W 1012 MB. FRONT WEAKENED TO
TROUGH FROM 25S154W TO LOW TO 17S147W 08S160W. WINDS EASED TO 20
KT OR LESS.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH 25S145W 17S150W 11S156W.

.FRONT 25S166W 13S172W THENCE TROUGH 02S180W. FRONT MOVING E 10 KT
AND TROUGH MOVING SW 20 KT. WINDS 20 TO 30 KT S OF 21S BETWEEN FRONT
AND 158W. ISOLATED MODERATE TSTMS WITHIN 420 NM E OF TROUGH AND FRONT.
.24 HOUR FORECAST FRONT 25S160W 20S163W THENCE TROUGH 12S173W 09S170E
05S160E. WINDS 20 TO 25 KT FROM 20S TO FRONT AND FRONT W OF 165W...
AND S OF FRONT E OF 165W.
.48 HOUR FORECAST FRONT 25S152W 21S161W TO TROUGH 13S170W 09S180W 08S170E.

.TROUGH 07S160E 02S167E NEARLY STATIONARY. ISOLATED MODERATE TSTMS
WITHIN 90 NM OF TROUGH... AND FROM 10S TO 07S W OF 175E.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT AND TROUGH DESCRIBED ABOVE.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.

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

.SEAS 4 TO 5.5 M S OF LINE 25S156W 15S153W 20S140W 25S136W. SEAS 2.5
TO 4 M ELSEWHERE S OF LINE 06S160E 16S175W 06S155W 17S145W 03S120W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 10S180W 20S160W 20S147W
06S130W 04S120W... AND FROM 20S TO 10S BETWEEN 170E AND 180W.
.48 HOUR FORECAST SEAS 4 TO 5 M S OF 23S W OF 130W. SEAS 2.5 TO 4 M
S OF 13S BETWEEN 170W AND 158W... AND S OF 20S E OF 140W... AND FROM
15S TO 10S BETWEEN 171E AND 170W.

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

$$

.FORECASTER SHIGESATO. HONOLULU HI.
Hurricane Kiko to enter the Central Pacific

The High Seas Forecast for the South Pacific
