252
FZPS40 PHFO 211512
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC FRI NOV 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 NOV 21 2025.
24 HOUR FORECAST VALID 1200 UTC NOV 22 2025.
48 HOUR FORECAST VALID 1200 UTC NOV 23 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 25S121W 21S130W 21S144W 16S162W 11S171W NEARLY STATIONARY.
SCATTERED MODERATE TSTMS WITHIN 270 NM OF TROUGH.
.24 HOUR TROUGH STRENGTHENED TO FRONT 25S120W 21S124W THENCE
TROUGH 15S140W 19S155W 14S174W.
.48 HOUR FORECAST FRONT MOVED S OF AREA. TROUGH 22S120W 19S124W
18S144W 15S163W.

.TROUGH 25S178E 17S170E 12S160E MOVING SE SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 25S179E 15S169E 11S160E.
.48 HOUR FORECAST NEW LOW 24S178W 1002 MB. TROUGH FROM 25S179E TO
LOW TO 13S171E 09S160E.

.TROUGH 10S179W 07S170E 03S161E MOVING SW 10 KT. SCATTERED
MODERATE TSTMS WITHIN 300 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED ABOVE.

.WINDS 20 TO 30 KT S OF 16S BETWEEN 179W AND 147W.
.24 HOUR FORECAST WINDS 20 TO 30 KT S OF 18S BETWEEN 174W AND
147W.
.48 HOUR FORECAST WINDS 20 TO 30 KT S OF 20S BETWEEN 179E AND
168W...AND FROM 22S TO 18S BETWEEN 150W AND 142W.

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

.SEAS 2.5 TO 4.0 M S OF LINE 25S170W 15S178W 15S161W 19S145W
24S135W 25S120W.
.24 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 25S167E 14S175W
15S167W 18S160W 17S146W 25S153W.
.48 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 25S166E 19S178W
16S168W 18S146W 21S147W 25S158W.

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


$$

.FORECASTER PIERCE. HONOLULU HI.