The High Seas Forecast for the South Pacific

High Seas Forecast Issued: 04/16/2025 01:28:18 PM UTC
                        
315
FZPS40 PHFO 160328
HSFSP

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...GALE WARNING...
.LOW PRESSURE SYSTEM S OF AREA. TROUGH FROM 25S174E 18S169E
12S160E NEARLY STATIONARY. WINDS 30 TO 35 KT S OF 22S BETWEEN 174E
AND 179E. WINDS 20 TO 30 KT ELSEWHERE S OF LINE 25S164W 18S169W
20S178E 09S163E 21S169E 25S160E. SEAS 12 TO 18 FT S OF LINE
25S179E 21S178E 19S174E 24S168E 25S168E. SEAS 8 TO 12 FT ELSEWHERE
S OF LINE 25S169W 19S170W 19S178E 12S168E 21S169E 21S160E.
SCATTERED MODERATE TSTMS WITHIN 270 NM OF E OF TROUGH.
.24 HOUR FORECAST TROUGH TRANSITIONED TO FRONT 25S178E 22S178E
16S170E THENCE TROUGH 12S160E. WINDS 20 TO 30 KT S OF 22S BETWEEN
179W AND 175W. SEAS 8 TO 10 FT S OF 20S W OF 170W.
.48 HOUR FORECAST FRONT 25S176E 22S173E THENCE TROUGH 14S168E
12S160E. WINDS EASED TO 20 KT OR LESS. SEAS 8 TO 12 FT S OF LINE
25S175E 19S160E.

SYNOPSIS AND FORECAST.

.LOW NEAR 21S151W 1006 MB MOVING SE 25 KT. TROUGH FROM 25S140W TO
23S147W TO LOW TO 15S156W 11S169W 07S173W MOVING E 10 KT. WINDS
20 TO 25 KT S OF 20S BETWEEN 152W AND 143W. SCATTERED MODERATE TO
STRONG TSTMS S OF 20S BETWEEN 151W AND 143W...AND FROM 15S TO
10S BETWEEN 165W AND 150W.
.24 HOUR FORECAST LOW MOVED S OF AREA. TROUGH TRANSITIONED TO
FRONT 25S142W 18S148W THENCE TROUGH 11S164W. WINDS EASED TO 20 KT
OR LESS.
.48 HOUR FORECAST FRONT 25S140W 20S146W THENCE TROUGH 16S152W
12S162W 07S176W.

.48 HOUR FORECAST NEW TROUGH 05S126W 02S131W.

.SEAS 8 TO 10 FT S OF LINE 25S140W 21S145W 18S169W 25S173W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF LINE 25S126W 19S133W
19S155W 25S165W.
.48 HOUR FORECAST SEAS 8 TO 10 FT S OF LINE 25S179W 20S160W
19S135W 07S120W.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.

.ITCZ 07S155W 04S135W 03S120W. SCATTERED MODERATE TSTMS FROM 12S
TO 03S BETWEEN 156W TO 130W. ISOLATED MODERATE TSTMS WITHIN 90 NM
OF ITCZ E OF 122W.

.ISOLATED MODERATE TSTMS FROM 08S TO 02S BETWEEN 165E AND 176E...
AND FROM 05S TO 02S BETWEEN 162W AND 159W.

$$

.FORECASTER TROTTER. HONOLULU HI.