763
FZPS40 PHFO 192234
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC APR 19 2025.
24 HOUR FORECAST VALID 1800 UTC APR 20 2025.
48 HOUR FORECAST VALID 1800 UTC APR 21 2025.
.WARNINGS.
..GALE WARNING
.LOW NEAR 20S179W 1008 MB MOVING SE 15 KT. TROUGH 25S180E
22S180W 17S178W 13S172W MOVING SE SLOWLY. WINDS 20 TO 30 KT
S OF 17S AND W OF 140W. ISOLATED MODERATE TSTMS WITHIN 300
NM E OF TROUGH.
.24 HOUR FORECAST LOW NEAR 23S175W 1008 MB. TROUGH FROM LOW TO
19S172W 15S164W. WINDS 30 TO 40 KT S OF 23S BETWEEN 165W AND 175W.
WINDS 25 TO 35 KT ELSEWHERE S OF 17S BETWEEN TROUGH AND 172W
AND 137W.
.48 HOUR FORECAST LOW MOVED S OF AREA. TROUGH 25S172W 22S172W
17S172W. WINDS 25 TO 35 KT FROM 21S TO 19S BETWEEN 155W AND 159W.
WINDS 20 TO 30 KT ELSEWHERE S OF 18S BETWEEN 135W AND 170W.
.SYNOPSIS AND FORECAST.
.TROUGH 11S160E 11S162E 12S169E MOVING S 10 KT.
.24 HOUR TROUGH 11S160E 12S164E 14S167E 15S172E.
.48 HOUR TROUGH 14S160E 15S163E 17S171E.
.FRONT 25S132W 23S134W 21S140W THENCE TROUGH 19S148W 14S158W
10S167W. FRONT MOVING E SLOWLY AND TROUGH MOVING SW SLOWLY.
ISOLATED MODERATE TSTMS WITHIN 120 NM OF TROUGH N OF 20S.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH 25S129W 15S148W.
.48 HOUR FORECAST TROUGH 25S126W 21S137W 18S149W 16S162W.
.SEAS 12 TO 15 FT S OF 18S BETWEEN 145W AND 168W. SEAS 8 TO
12 FT ELSEWHERE S OF LINE 03S120W 08S136W 18S141W 14S155W
15S169W 20S179W 24S160E.
.24 HOUR FORECAST SEAS 12 TO 15 FT S OF LINE 25S150W 22S141W
17S162W 25S176W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 11S120W
07S131W 08S137W 18S141W 13S153W 13S160W 21S175W 22S160E.
.48 HOUR FORECAST SEAS 12 TO 14 FT S OF LINE 20S BETWEEN 138W
AND 165W. SEAS 8 TO 12 FT ELSEWHERE S OF LINE 09S120W 11S132W
15S136W 12S165W 21S175W 17S174E 25S171E.
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.
.ISOLATED MODERATE TSTMS FROM 09S TO 03S BETWEEN 125W AND
145W.
.FORECASTER M BALLARD. HONOLULU HI.
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