243
FZPS40 PHFO 170311
HSFSP
HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 17 2025.
24 HOUR FORECAST VALID 0000 UTC SEP 18 2025.
48 HOUR FORECAST VALID 0000 UTC SEP 19 2025.
.WARNINGS.
..GALE WARNING
.TROUGH 19S147W 12S162W 04S170W MOVING SW 10 KT.
.24 HOUR FORECAST TROUGH 19S162W 11S169W 03S175W. WINDS 30 TO 35
KT IN AREA BOUNDED BY 20S164W 14S171W 13S169W 18S162W 20S164W.
WINDS 20 TO 30 KT ELSEWHERE S OF LINE 25S161W 11S177W 12S171W
17S163W 16S160W 21S150W 25S155W.
.48 HOUR FORECAST NEW LOW NEAR 20S161W 1008 MB. TROUGH FROM
22S160W TO LOW TO 11S168W TO 04S177W. WINDS 30 TO 35 KT IN AREA
BOUNDED BY 24S157W 21S164W 17S164W 17S162W 22S152W 24S157W. WINDS
20 TO 30 KT ELSEWHERE S OF LINE 25S161W 12S177W 12S170W 18S163W
21S150W 25S160W.
.SYNOPSIS AND FORECAST.
.FRONT 25S137W 20S145W MOVING SE 15 KT.
.24 HOUR FORECAST FRONT 25S131W 23S136W.
.48 HOUR FORECAST FRONT 25S124W 23S128W.
.TROUGH 13S171W 10S179W 04S174E MOVING SW SLOWLY.
.24 HOUR FORECAST TROUGH 11S178W 06S174E 03S160E.
.48 HOUR FORECAST TROUGH 10S176E 06S165E 03S160E.
.WINDS 20 TO 25 KT FROM 21S TO 07S W OF 179E.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM IN AREA BOUNDED BY
25S170W 18S160E 05S160E 17S175W 22S169W 23S163W 25S162W.
.48 HOUR FORECAST WINDS EASED TO 20 KT OR LESS.
.WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.
.SEAS 2.5 TO 4 M S OF LINE 25S173W 22S169E 07S167E 08S177E
19S177E 13S176W 15S159W 18S151W 25S143W. SEAS 2.5 TO 3.5 M FROM
19S TO 06S W OF 166E.
.24 HOUR FORECAST SEAS 2.5 TO 4 M IN AREA BOUNDED BY 25S169W
17S160E 10S160E 11S162E 06S160E 06S168E 14S167W 07S160W 10S145W
17S150W 22S137W 25S133W 25S169W.
.48 HOUR FORECAST SEAS 4 TO 5 M S OF LINE 25S161W 23S165W 18S162W
23S153W 25S156W. SEAS 2.5 TO 4 M ELSEWHERE S OF LINE 25S170W
22S176W 09S170W 23S134W 25S126W. SEAS 2.5 TO 3 M FROM 19S TO 08S
BETWEEN 167E AND 179E.
.SEAS 2.5 M OR LOWER OVER REMAINDER OF FORECAST AREA.
.ISOLATED MODERATE TSTMS FROM 11S TO 05S W OF 168E.
.FORECASTER TROTTER. HONOLULU HI.
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