484
FZPS40 PHFO 171509
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC MON NOV 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 17 2025.
24 HOUR FORECAST VALID 1200 UTC NOV 18 2025.
48 HOUR FORECAST VALID 1200 UTC NOV 19 2025.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT 21S120W 17S127W 15S137W MOVING S SLOWLY. ISOLATED MODERATE
TSTMS WITHIN 30 NM OF FRONT.
.24 HOUR FORECAST FRONT 23S120W 20S130W THENCE TROUGH 14S140W.
.48 HOUR FORECAST FRONT 25S124W 18S132W THENCE TROUGH 14S140W. WINDS
20 TO 25 KT S OF 20S E OF 133W.

.TROUGH 14S160W 10S172W 07S177E MOVING W SLOWLY. NUMEROUS STRONG TSTMS
FROM 15S TO 10S BETWEEN 180W AND 175W. ISOLATED MODERATE TSTMS ELSEWHERE
WITHIN 90 NM OF TROUGH E OF 180W.
.24 HOUR FORECAST TROUGH 16S166W 08S174E.
.48 HOUR FORECAST TROUGH 20S169W 12S174E.

.TROUGH 25S178E 15S174E MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH 25S177E 20S168E.
.48 HOUR FORECAST TROUGH 25S178E 20S172E.

.TROUGH 25S163E 20S160E NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH 25S165E 18S160E.
.48 HOUR FORECAST TROUGH 25S163E 17S160E.

.WINDS 20 TO 25 KT S OF LINE 25S180W 17S170W 15S145W.
.24 HOUR FORECAST WINDS 20 TO 25 KT S OF LINE 25S180W 13S160W 17S145W.
.48 HOUR FORECAST WINDS 20 TO 25 KT S OF LINE 20S180W 12S160W 20S140W.

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

.SEAS 2.5 TO 4 M S OF LINE 25S177E 10S164W 14S145W 10S140W 16S120W.
.24 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 25S176E 15S170W 15S155W
20S140W 18S120W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 25S180W 14S170W 13S160W
20S147W.

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

.SCATTERED MODERATE TSTMS FROM 20S TO 15S BETWEEN 150W AND 143W. ISOLATED
MODERATE TSTMS FROM 14S TO 10S BETWEEN 175E AND 180W... AND FROM 20S
TO 15S BETWEEN 170W AND 164W.

$$

.FORECASTER SHIGESATO. HONOLULU HI.