503
FZPS40 PHFO 012257
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC MON DEC 01 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 01 2025.
24 HOUR FORECAST VALID 1800 UTC DEC 02 2025.
48 HOUR FORECAST VALID 1800 UTC DEC 03 2025.

.WARNINGS.

...GALE WARNING...

.LOW 16S154W 1008 MB MOVING SE 15 KT. TROUGH FROM LOW TO
15S140W. WINDS 20 TO 25 KT WITHIN 90 NM OF POINT 14S151W.
.24 HOUR FORECAST LOW 16S149W 1004 MB. TROUGH FROM LOW TO
18S140W. WINDS 20 TO 30 KT FROM 20S TO 12S BETWEEN 140W
AND 155W.
.36 HOUR FORECAST LOW 18S148W 1001 MB. TROUGH FROM LOW TO
20S134W AND FROM LOW TO 15S155W. WINDS 30 TO 35 KT WITHIN
90 NM OF N SEMICIRCLE. WINDS 20 TO 30 KT ELSEWHERE S OF
LINE 25S155W 10S155W 15S140W 25S135W.
.48 HOUR FORECAST LOW 20S146W 999 MB. TROUGH FROM LOW TO
20S135W 25S130W AND FROM LOW TO 18S150W 15S155W. WINDS
30 TO 35 KT S OF LINE 25S148W 13S148W 20S138W 25S138W.
WINDS 20 TO 30 KT ELSEWHERE S OF LINE 25S155W 10S155W
15S140W 25S135W.

.SYNOPSIS AND FORECAST.

.FRONT 25S124W 22S126W THENCE TROUGH 16S135W 15S140W
MOVING SE 15 KT S OF 20S ELSEWHERE NEARLY STATIONARY.
.24 HOUR FORECAST FRONT 25S120W 22S127W THENCE TROUGH 20S140W.
.48 HOUR FORECAST FRONT MOVED S OF AREA TROUGH 23S120W
22S125W.

.TROUGH 12S161W 14S165W 14S166W MOVING E 15 KT.
.24 HOUR FORECAST TROUGH 11S164W 15S155W.
.48 HOUR FORECAST TROUGH STRENGTHENS TO LOW 13S152W 1008 MB.
TROUGH FROM LOW TO 15S155W. WINDS 20 TO 25 KT WITHIN 60 NM OF
LOW.

.TROUGH 20S158W 25S156W MOVING S SLOWLY.
.24 HOUR FORECAST TROUGH DISSIPATED.

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

.24 HOUR FORECAST SEAS 2.5 TO 4 M WITHIN 180 NM OF POINT
16S148W...AND S OF LINE 22S160E 25S165E.
.48 HOUR FORECAST SEAS 4 TO 5 M WITHIN 240 NM OF POINT
18S145W. SEAS 2.5 TO 4 M ELSEWHERE S OF LINE 25S155W
10S155W 12S145W 25S135W...AND S OF LINE 18S160E 25S175E.

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

.ISOLATED MODERATE TSTMS WITHING 60 NM OF POINT
15S169W...AND WITHIN 90 NM OF LINE 17S135W 25S120W.

$$

.FORECASTER PECHACEK. HONOLULU HI.