746
FZPS40 PHFO 160328
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC THU OCT 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 16 2025.
24 HOUR FORECAST VALID 0000 UTC OCT 17 2025.
48 HOUR FORECAST VALID 0000 UTC OCT 18 2025.

.WARNINGS.

...GALE WARNING...
.TROUGH 23S141W 14S151W 09S167W MOVING SW SLOWLY. WINDS 20 TO 25
KT WITHIN 210 NM OF TROUGH S OF 14S. SEAS 2.5 TO 3 M S OF 21S
BETWEEN 149W AND 141W. ISOLATED MODERATE TSTMS FROM 13S TO 08S
BETWEEN 166W AND 153W.
.24 HOUR FORECAST NEW LOW NEAR 22S144W 1010 MB. TROUGH FROM
25S143W TO LOW TO 18S148W TO 11S158W TO 09S170W. WINDS 30 TO 35 KT
WITHIN 120 NM OF LOW. WINDS 20 TO 30 KT ELSEWHERE S OF 22S BETWEEN
148W AND 139W. SEAS 2.5 TO 4 M S OF 19S BETWEEN 153W AND 137W.
.48 HOUR FORECAST LOW MOVED S OF AREA. TROUGH STRENGTHENED TO
FRONT FROM 25S143W TO 20S145W THENCE TROUGH FROM 13S158W TO
08S173W 05S178W. WINDS 20 TO 25 KT S OF 23S BETWEEN 147W AND
140W. SEAS 2.5 TO 4 M S OF 23S BETWEEN 150W AND 141W.

.SYNOPSIS AND FORECAST.

.FRONT 25S126W 24S130W 23S136W MOVING E 15 KT S OF 24S AND NEARLY
STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT MOVED E OF AREA.

.FRONT 25S177E 21S170E 21S165E MOVING ESE 10 KT S OF 23S AND
NEARLY STATIONARY ELSEWHERE. WINDS 20 TO 25 KT S OF LINE 25S176E
21S170E 19S160E. SEAS 2.5 TO 3 M S OF LINE 25S175E 21S167E 22S166E
18S160E.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S169W 21S171W. WINDS
EASED TO 20 KT OR LESS AND SEAS LOWERED TO 2.5 M OR LOWER.
.48 HOUR FORECAST TROUGH MOVED S OF AREA.

.TROUGH 13S173W 10S176E 05S169E 03S160E MOVING SW SLOWLY.
SCATTERED MODERATE TSTMS WITHIN 240 NM OF TROUGH...AND FROM 10S TO
05S W OF 164E.
.24 HOUR FORECAST TROUGH 12S179W 07S171E 06S160E.
.48 HOUR FORECAST TROUGH 14S178E 09S169E 08S160E.

.WINDS 20 KT OR LESS AND SEAS 2.5 M OR LOWER OVER REMAINDER OF
FORECAST AREA.

$$

.FORECASTER TROTTER. HONOLULU HI.