838
FZPS40 PHFO 202303
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC THU NOV 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 NOV 20 2025.
24 HOUR FORECAST VALID 1800 UTC NOV 21 2025.
48 HOUR FORECAST VALID 1800 UTC NOV 22 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH 25S124W 18S132W 15S143W 15S167W 14S172W 11S176W MOVING
SE SLOWLY S OF 18S...AND NEARLY STATIONARY ELSEWHERE. SCATTERED
MODERATE TSTMS WITHIN 120 NM OF TROUGH E OF 155W...AND BETWEEN
TROUGH AND 10S W OF 160W.
.24 HOUR TROUGH STRENGTHENED TO FRONT 25S120W 18S132W THENCE
TROUGH 14S144W 16S156W 14S175W.
.48 HOUR FORECAST FRONT MOVED S OF AREA. TROUGH 25S121W 15S137W
17S153W 15S176W.

.TROUGH 25S135W 22S134W MOVING E SLOWLY. SCATTERED MODERATE TSTMS
WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 25S134W 22S133W.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IMMEDIATELY
ABOVE.

.TROUGH 25S174E 17S174E MOVING W SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH 25S171E 18S171E 12S160E.
.48 HOUR FORECAST NEW LOW 22S172E 1002 MB. TROUGH 25S175E TO LOW
TO 18S172E 11S160E. WINDS 20 TO 30 KT S OF 22S BETWEEN 177E AND
169E.

.TROUGH 14S169E 10S160E NEARLY STATIONARY. SCATTERED MODERATE
TSTMS WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IMMEDIATELY
ABOVE.

.WINDS 20 TO 30 KT S OF 17S BETWEEN 145W AND 180E.
.24 HOUR FORECAST WINDS 20 TO 25 KT S OF 17S BETWEEN 145W AND 180E.
.48 HOUR FORECAST WINDS 20 TO 30 KT S OF 17S BETWEEN 145W AND 180E.

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

.SEAS 2.5 TO 4.0 M S OF LINE 25S124W 12S169W 25S167E.
.24 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 23S120W 14S169W
25S169E.
.48 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 18S147W 14S169W
25S164E.

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

.SCATTERED MODERATE TSTMS N OF 05S W OF 175W.

$$

.FORECASTER AHUE. HONOLULU HI.