998
FZPS40 PHFO 181128
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC THU SEP 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 18 2025.
24 HOUR FORECAST VALID 0600 UTC SEP 19 2025.
48 HOUR FORECAST VALID 0600 UTC SEP 20 2025.
.WARNINGS.
..GALE WARNING
.TROUGH 20S163W 09S170W MOVING ESE SLOWLY. WINDS 30 TO 35 KT
WITHIN 270 NM W OF TROUGH FROM 22S TO 13S. WINDS 20 TO 30 KT
ELSEWHERE BETWEEN TWO LINES FROM 25S168W 17S160E AND 23S141W
07S160E. SEAS MENTIONED BELOW. ISOLATED TSTMS WITHIN 120 NM E OF
TROUGH N OF 19S.
.24 HOUR FORECAST NEW LOW NEAR 23S160W 1009 MB. TROUGH FROM
24S160W TO LOW TO 17S163W. WINDS 30 TO 35 KT WITHIN 150 NM EITHER
SIDE OF LOW AND TROUGH S OF 22S. WINDS 20 TO 30 KT ELSEWHERE S OF
19S BETWEEN 134W AND 170W. SEAS MENTIONED BELOW.
.48 HOUR FORECAST LOW AND TROUGH MOVED S OF AREA. WINDS 20 TO 25
KT S OF 23S BETWEEN 145W AND 162W. SEAS MENTIONED BELOW.
.SYNOPSIS AND FORECAST.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 20S TO 10S W OF 173W.
.48 HOUR FORECAST WINDS 20 KT OR LOWER.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 4.5 M BETWEEN TWO LINES 25S173W 16S160E AND 25S132W
05S160E.
.24 HOUR FORECAST SEAS 4 TO 5 M S OF 17S BETWEEN 135W AND 175W.
SEAS 2.5 TO 3 M FROM 17S TO 09S BETWEEN 180W AND 165E.
.48 HOUR FORECAST SEAS 2.5 TO 4 M S 19S E OF 170W.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.FORECASTER BLOOD. HONOLULU HI.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page