099
FZPS40 PHFO 242239
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC SUN AUG 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 24 2025.
24 HOUR FORECAST VALID 1800 UTC AUG 25 2025.
48 HOUR FORECAST VALID 1800 UTC AUG 26 2025.
.WARNINGS.
.NONE.
.SYNOPSIS AND FORECAST.
.FRONT 25S166E 20S166E 16S163E MOVING E 10 KT. WINDS 20 TO 30 KT
S OF 21S BETWEEN 168E AND 175E. ISOLATED MODERATE TSTMS S OF 18S
BETWEEN FRONT AND 172E.
.24 HOUR FORECAST FRONT 25S175E 17S170E 13S167E THENCE TROUGH
09S163E 06S160E. WINDS 20 TO 30 KT S OF 22S BETWEEN 177E AND 176W.
.48 HOUR FORECAST FRONT 25S179E 17S171E 13S167E THENCE TROUGH
07S164E. WINDS 20 TO 30 KT S OF LINE 25S176E 19S174E 19S178E
23S178W 23S172W 25S170W.
.TROUGH 16S169E 10S163E 06S160E MOVING NE SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF TROUGH N OF 10S.
.24 HOUR FORECAST TROUGH MERGES WITH FRONT DESCRIBED ABOVE.
.FRONT JUST S OF AREA. TROUGH 25S124W 17S132W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT 23S120W 21S129W THENCE TROUGH 17S137W.
.48 HOUR FORECAST WEAK FRONT 22S120W 19S140W THENCE TROUGH
17S148W.
.TROUGH 25S167W 21S170W MOVING E 10 KT.
.24 HOUR FORECAST TROUGH 25S162W 20S165W.
.48 HOUR FORECAST TROUGH DISSIPATED.
.TROUGH 23S160W 20S163W 16S167W MOVING W SLOWLY. WINDS 20 TO 25
KT S OF LINE 25S160W 16S171W 15S163W 22S158W 22S151W 25S155W.
.24 HOUR FORECAST TROUGH DISSIPATED.
.48 HOUR FORECAST NEW TROUGH 10S175W 08S175E.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 4.0 TO 5.0 M S OF 23S BETWEEN 168E AND 172E. SEAS 2.5 TO
4.0 M ELSEWHERE S OF LINE 25S162E 19S169E 14S174E 23S175E 20S178W
21S174W 10S170W 06S166W 06S159W 07S147W 13S138W 25S130W. SEAS 2.5
TO 3.5 M FROM 18S TO 03S E OF 133W.
.24 HOUR FORECAST SEAS 2.5 TO 4.0 M S OF LINE 20S160E 24S169E
14S172W 02S169W 00S153W.
.48 HOUR FORECAST SEAS 2.5 TO 4 M S OF LINE 20S160E 19S163E
22S167E 23S173W 10S174W 00S165W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.FORECASTER TROTTER. HONOLULU HI.
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