045
FZPS40 PHFO 171522
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC WED SEP 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC SEP 17 2025.
24 HOUR FORECAST VALID 1200 UTC SEP 18 2025.
48 HOUR FORECAST VALID 1200 UTC SEP 19 2025.
.WARNINGS.
..GALE WARNING
.TROUGH 25S165W 11S178W MOVING ESE 10 KT. WINDS 25 TO 30 KT WITHIN
60 NM EITHER SIDE OF TROUGH N OF 18N. SEAS MENTIONED BELOW.
.24 HOUR FORECAST TROUGH 25S157W 13S166W. WINDS 30 TO 35 KT
WITHIN 60 NM EITHER SIDE OF TROUGH S OF 16S. WINDS 20 TO 30 KT
ELSEWHERE WITHIN 180 NM OF TROUGH AND S OF 12S BETWEEN 145W AND
172W. SEAS 2.5 TO NEAR 5 M WITHIN 240 NM EITHER SIDE OF TROUGH S
OF 14S.
.48 HOUR FORECAST NEW LOW NEAR 23S161W 1006 MB. TROUGH 25S161W TO
LOW 12S163W. WINDS 30 TO 35 KT WITHIN 60 NM E SEMICIRCLE OF LOW
CENTER. WINDS 20 TO 30 KT ELSEWHERE WITHIN 210 NM W OF TROUGH AND
WITHIN 210 NM OF A LINE FROM LOW TO 17S138W. SEAS 4 TO 5 M WITHIN
120 NM OF LOW. SEAS 2.5 TO 4 M ELSEWHERE BETWEEN TWO LINES 25S171W
17S160E AND 25S124W 05S160E.
.SYNOPSIS AND FORECAST.
.FRONT 25S137W 22S142W THENCE TROUGH 16S156W. FRONT MOVING SE 10
KT. TROUGH NEARLY STATIONARY.
.24 HOUR FORECAST FRONT 25S133W 22S140W THENCE TROUGH 20S147W.
.48 HOUR FORECAST FRONT 25S122W 20S135W.
.WINDS 20 TO 25 KT BETWEEN TWO LINES FROM 23S170W 17S160E AND
17S156W 06S160E.
.24 HOUR FORECAST WINDS 20 TO 25 KT BETWEEN TWO LINES FROM
25S171W 18S160E AND 21S146W 07S160E...AND FROM 17S TO 09S BETWEEN
142W AND 155W.
.48 HOUR FORECAST WINDS 20 TO 25 KT WITHIN 270 NM EITHER SIDE OF
A LINE FROM 22S173W TO 12S160W.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 3 M BETWEEN TWO LINES FROM 25S169W 18S160E AND
25S139W 06S160E.
.24 HOUR FORECAST SEAS 2.5 TO NEAR 5 M SEAS IN GALE WARNING
ABOVE.
.48 HOUR FORECAST SEAS 2.5 TO 5 M IN GALE WARNING ABOVE.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ISOLATED MODERATE TSTMS FROM 08S TO 05S W OF 168E.
.FORECASTER BLOOD. HONOLULU HI.
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