The High Seas Forecast for the South Pacific

High Seas Forecast Issued: 08/13/2025 01:13:50 PM UTC
                        
244
FZPS40 PHFO 130313
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC WED AUG 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 13 2025.
24 HOUR FORECAST VALID 0000 UTC AUG 14 2025.
48 HOUR FORECAST VALID 0000 UTC AUG 15 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 25S175W 22S180W 18S170E 15S160E MOVING E 20 KT.
WINDS 20 TO 25 KT S OF 22S BETWEEN 180W AND 170W.
.24 HOUR FORECAST TROUGH 25S163W 20S170W 15S180W. WINDS 20 TO
30 KT S OF 22S BETWEEN 155W AND 175W.
.48 HOUR FORECAST TROUGH 25S155W 20S160W 10S170W. WINDS 20 TO
25 KT S OF 22S BETWEEN 145W AND 160W.

.TROUGH 25S140W 22S142W NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 25S135W 23S140W 20S147W.
.48 HOUR FORECAST TROUGH 25S125W 22S130W 25S137W.

.TROUGH 15S175W 10S180W 05S173E. NEARLY STATIONARY. SCATTERED
MODERATE TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 17S175W 11S180W 06S173W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.48 HOUR FORECAST NEW TROUGH 15S160E 20S170E 25S172E. WINDS
20 TO 30 KT WITHIN 120 NM OF TROUGH.

.WINDS 20 TO 25 KT S OF 23S BETWEEN 173W AND 178W.
.24 HOUR FORECAST WINDS 20 TO 25 KT S OF 24S BETWEEN 160W
AND 173W.
.48 HOUR FORECAST WINDS 20 TO 25 KT S OF 23S BETWEEN
152W AND 161W.

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

.SEAS 2.5 TO 4 M S OF LINE 25S175E 20S180W 25S175W...AND
25S165W 20S165W 25S145W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF 21S BETWEEN 180W AND
130W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M S OF 22S BETWEEN 180W
AND 130W.

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

.ISOLATED MODERATE TSTMS FROM 15S TO 04S W OF 175W.


$$

.FORECASTER PECHACEK. HONOLULU HI.