229
FZPS40 PHFO 191041
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC SAT APR 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC APR 19 2025.
24 HOUR FORECAST VALID 0600 UTC APR 20 2025.
48 HOUR FORECAST VALID 0600 UTC APR 21 2025.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 18S179W 1006 MB MOVING SE SLOWLY. TROUGH 25S179E 22S179E
TO LOW TO 12S172W MOVING SE SLOWLY. WINDS 20 TO 25 KT S OF 17S
BETWEEN 142W AND 178W. ISOLATED MODERATE TSTMS WITHIN 180 NM E OF
TROUGH.
.24 HOUR FORECAST LOW NEAR 21S177W 1006 MB. TROUGH DESCRIBED
IMMEDIATELY BELOW MERGES WITH NEW FRONT FROM LOW TO 17S179E 13S169
11S160E. WINDS 30 TO 40 KT S OF 23S BETWEEN 170W AND 175W. WINDS
25 TO 35 KT S OF 22S BETWEEN 172W AND 177W. WINDS 20 TO 30 KT
ELSEWHERE S OF 17S BETWEEN 140W AND 179W.
.48 HOUR FORECAST LOW MOVED S OF AREA. FRONT 25S171W 19S176W
14S173E 10S160E. WINDS 30 TO 40 KT S OF 24S BETWEEN 166W AND 170W.
WINDS 20 TO 30 KT ELSEWHERE S OF 18S BETWEEN 130W AND 170W.

.SYNOPSIS AND FORECAST.

.TROUGH 10S172E 10S163E 09S160E NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH MERGES WITH FRONT MENTIONED ABOVE.

.FRONT 25S136W 20S145W THENCE TROUGH 16S154W 11S163W NEARLY
STATIONARY.
.24 HOUR FORECAST FRONT 25S131W 21S140W THENCE TROUGH 19S151W
16S164W.
.48 HOUR FORECAST FRONT 25S125W 20S136W THENCE TROUGH 18S145W
17S165W.

.SEAS 12 TO 13 FT S OF 19S BETWEEN 147W AND 165W. SEAS 8 TO 12 FT
ELSEWHERE S OF LINE 03S120W 08S136W 19S136W 14S167W 21S178E
25S178E 23S173E 22S160E.
.24 HOUR FORECAST SEAS 12 TO 15 FT S OF LINE 25S141W 23S140W
17S161W 21S173W 25S178W. SEAS 8 TO 12 FT ELSEWHERE 08S120W 06S128W
09S137W 19S141W 13S153W 13S162W 20S175E 22S160E.
.48 HOUR FORECAST SEAS 12 TO 15 FT S OF LINE 25S136W 22S138W
18S162W 25S174W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 10S120W
11S136W 19S141W 12S156W 12S166W 21S175W 17S173E 25S169E.

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

.ISOLATED MODERATE TSTMS FROM 10S TO 04S BETWEEN 128W AND
142W...AND N OF 08S W OF 166E.

$$

.FORECASTER PIERCE. HONOLULU HI.