974
FZPS40 PHFO 190326
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC APR 19 2025.
24 HOUR FORECAST VALID 0000 UTC APR 20 2025.
48 HOUR FORECAST VALID 0000 UTC APR 21 2025.
.WARNINGS.
..GALE WARNING
.TROUGH 25S180E 23S180E 18S179E 15S177E MOVING SE SLOWLY. WINDS
20 TO 25 KT S OF 17S BETWEEN 145W AND 180W. ISOLATED MODERATE
TSTMS WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST NEW LOW NEAR 22S176W 1006 MB. TROUGH DESCRIBED
IMMEDIATELY BELOW MERGES WITH NEW FRONT FROM LOW TO 17S179E
13S170E 13S160E...AND FROM LOW TO 22S173W 19S170W. WINDS 25 TO
35 KT S OF 22S BETWEEN 172W AND 177W. WINDS 20 TO 30 KT ELSEWHERE
S OF 17S BETWEEN 140W AND 180W.
.48 HOUR FORECAST LOW MOVED S OF AREA. FRONT 25S171W 20S174W
14S172E 12S160E...AMD 25S170W 23S168W 18S167W. WINDS 30 TO 40 KT
S OF 24S BETWEEN 166W AND 170W. WINDS 20 TO 30 KT ELSEWHERE S OF
18S BETWEEN 135W AND 170W.
.SYNOPSIS AND FORECAST.
.TROUGH 11S171E 09S162E 10S160E NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH MERGES WITH FRONT MENTIONED ABOVE.
.TROUGH 10S129W 06S133W 05S137W. ISOLATED TSTMS WITHIN 90 NM OF
TROUGH.
.24 HOUR FORECAST TROUGH 09S137W 06S138W 03S140W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.FRONT 25S136W 24S138W 20S147W THENCE TROUGH 17S154W 15S164W
14S172W NEARLY STATIONARY. SEE ASSOCIATED WINDS IN GALE ABOVE.
.24 HOUR FORECAST FRONT 25S131W 21S141W THENCE TROUGH 18S150W
13S169W. SEE ASSOCIATED WINDS IN GALE ABOVE.
.48 HOUR FORECAST FRONT 25S127S 20S136W THENCE TROUGH 17S143W
16S153W 14S165W. SEE ASSOCIATED WINDS IN GALE ABOVE.
.SEAS 12 TO 13 FT S OF 21S BETWEEN 148W AND 165W. SEAS 8 TO 12 FT
ELSEWHERE S OF LINE 02S120W 08S136W 20S136W 15S165W 21S160E.
.24 HOUR FORECAST SEAS 12 TO 15 FT S OF LINE 25S142W 18S160W
20S175W 25S178W. SEAS 8 TO 12 FT ELSEWHERE 04S120W 09S128W 17S140W
13S160W 22S160E.
.48 HOUR FORECAST SEAS 12 TO 15 FT S OF LINE 25S138W 18S150W
25S175W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 10S120W 10S138W
18S141W 12S160W 18S172E.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.
.FORECASTER M BALLARD. HONOLULU HI.
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