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000
FZPS40 PHFO 211512
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN APR 21 2024

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 21 2024.
24 HOUR FORECAST VALID 1200 UTC APR 22 2024.
48 HOUR FORECAST VALID 1200 UTC APR 23 2024.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 21S163E 1007 MB MOVING ESE 15KT. TROUGH FROM 24S175E TO
21S168E TO LOW TO 16S160E. E TO SE WINDS 25 TO 35 KT FROM 20S TO
24S W OF 166E. E TO SE WINDS 20 TO 30 KT ELSEWHERE S OF LINE FROM
18S172E TO 20S164E TO 18S160E. SCATTERED MODERATE TO STRONG TSTMS
WITHIN 300 NM N OF TROUGH...AND WITHIN 60 NM S OF TROUGH.
.24 HOUR FORECAST LOW NEAR 22S175E 1009 MB. TROUGH FROM 25S174W TO
LOW TO 13S160E. WINDS 20 TO 30 KT S OF A LINE FROM 21S180W TO
18S160E.
.48 HOUR FORECAST LOW NEAR 23S174W 1008 MB. SECOND LOW NEAR
17S165E 1010 MB. TROUGH FROM 25S171W TO LOW TO 20S175E TO SECOND
LOW TO 16S160E. WINDS 20 TO 30 KT S OF A LINE FROM 21S173W TO
18S160E.

...GALE WARNING...
.TROUGH FROM 17S120W TO 13S123W NEARLY STATIONARY. E TO SE WINDS
20 TO 30 KT S OF A LINE FROM 20S120W TO 15S130W TO 17S140W TO
20S144W.
.06 HOUR FORECAST TROUGH FROM 18S120W TO 15S121W. SE WINDS 30 TO
35 KT S OF 22S E OF 122W. WINDS 20 TO 30 KT ELSEWHERE S OF LINE
FROM 21S120W TO 15S130W TO 20S143W.
.24 HOUR FORECAST TROUGH FROM 21S120W TO 14S121W. WINDS 20 TO 30 KT
S OF LINE FROM 22S120W TO 17S130W TO 21S142W.
.48 HOUR FORECAST TROUGH FROM 22S125W TO 16S130W. WINDS 20 TO 25
KT S OF LINE FROM 22S120W TO 21S132W.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 11S180E TO 09S172E TO 05S169E MOVING SW SLOWLY.
SCATTERED MODERATE TSTMS WITHIN 240 NM S OF TROUGH. ISOLATED
MODERATE TSTMS WITHIN 300 NM NE OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 04S169E TO 11S170E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 25S150W TO 21S154W TO 16S155W MOVING E SLOWLY.
NUMEROUS STRONG TSTMS WITHIN 360 NM E OF TROUGH S OF 17S.
.24 HOUR FORECAST TROUGH FROM 25S147W TO 20S153W TO 15S151W.
.48 HOUR FORECAST TROUGH FROM 25S155W TO 19S152W TO 16S153W.

.SEAS 12 TO 13 FT FROM 20S TO 23S BETWEEN 160E AND 165E. SEAS 8 TO
11 FT ELSEWHERE S OF A LINE FROM 20S171E TO 21S165E TO 18S160E.
SEAS 8 TO 12 FT S OF A LINE FROM 16S120W TO 16S130W TO 20S146W.
.24 HOUR FORECAST SEAS 12 TO 15 FT S OF 21S E OF 127W. SEAS 8 TO
11 FT ELSEWHERE S OF LINE FROM 18S120W TO 14S131W TO 14S138W TO
20S144W TO 25S147W. SEAS 8 TO 11 FT S OF A LINE FROM 22S178E TO
21S168E TO 18S160E.
.48 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE FROM 20S120W TO
16S128W TO 16S135W TO 25S140W. SEAS 8 TO 12 FT S OF A
LINE FROM 25S175E TO 21S165E TO 17S160E.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LOWER OVER REMAINDER OF AREA.

.SCATTERED MODERATE TSTMS FROM 18S TO 12S BETWEEN 142W AND 148W.
ISOLATED MODERATE TSTMS S OF 20S E OF 122W...AND N OF 07S BETWEEN
168W AND 179W.




$$

.FORECASTER TSAMOUS. HONOLULU HI.