539
FZPS40 PHFO 312230
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC THU JUL 31 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JUL 31 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 01 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 02 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 20S135W 20S120W THENCE TROUGH 15S145W 15S160W
MOVING E 15 KT. WINDS 20 TO 25 KT S OF 20S BETWEEN 125W
AND 140W.
.24 HOUR FORECAST FRONT MOVED E OF AREA TROUGH 25S120W
20S125W. WINDS DIMINISHING TO LESS THAN 20 KT.
.48 HOUR FORECAST TROUGH MOVED E OF AREA.

.TROUGH 20S160W 25S167W MOVING SE 15 KT. WINDS 20 TO 25 KT
S OF 20S BETWEEN 158W AND 168W.
.24 HOUR FORECAST FRONT 25S155W 20S160W THENCE TROUGH 15S165W.
WINDS 20 TO 25 KT S OF 22S BETWEEN 155W AND 180W.
.48 HOUR FORECAST FRONT 25S145W 20S150W THENCE TROUGH 15S155W
15S165W. WINDS 20 TO 30 KT S OF 20S BETWEEN 145W AND 175W.

.TROUGH 25S165W 20S160W 25S170W MOVING SE 15 KT.
.24 HOUR FORECAST TROUGH MOVED S OF AREA.

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

.SEAS 4 TO 6 M S OF LINE 25S165E 20S180W 15S155W 18S130W
22S120W.
.24 HOUR FORECAST SEAS 4 TO 6 M S OF LINE 25S173W 20S180W
20S160W 15S150W 15S130W 20S120W.
.48 HOUR FORECAST SEAS 4 TO 6 M S OF LINE 25S175W
20S170W 25S158W. SEAS 2.5 TO 4 M ELSEWHERE S OF LINE
22S160E 25S170W 25S150W...AND S OF 10S E OF 135W.

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

$$

.FORECASTER PECHACEK. HONOLULU HI.