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000
FZPS40 PHFO 201512
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SAT APR 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20 2024.
24 HOUR FORECAST VALID 1200 UTC APR 21 2024.
48 HOUR FORECAST VALID 1200 UTC APR 22 2024.

.WARNINGS.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW NEAR 21S170E 1007 MB. TROUGH FROM 23S175E
TO LOW TO 14S160E. SE WINDS 35 TO 35 KT S OF LOW AND TROUGH W OF
164E. SE WINDS 20 TO 30 KT ELSEWHERE S OF TROUGH W OF 175E.
.48 HOUR FORECAST LOW NEAR 24S180E 1006 MB. NEW SECOND LOW NEAR
22S171E 1008 MB. TROUGH FROM FIRST LOW TO SECOND LOW TO 13S160E.
WINDS 30 TO 35 KT S OF SECOND LOW AND TROUGH BETWEEN 173E AND
164E. WINDS 20 TO 30 KT ELSEWHERE S OF TROUGH W OF 180W.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 11S160E TO 19S168E MOVING S 10 KT. SCATTERED MODERATE
TSTMS WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IN ABOVE
WARNING SECTION.

.TROUGH FROM 04S173E TO 07S177E TO 09S177W MOVING SW SLOWLY.
ISOLATED MODERATE TSTMS WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 08S172E TO 12S180E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 25S151W TO 22S155W TO 16S158W NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 570 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 25S153W TO 20S157W TO 13S157W.
.48 HOUR FORECAST TROUGH FROM 25S146W TO 20S147W.

.TROUGH FROM 17S120W TO 15S122W MOVING W SLOWLY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST TROUGH FROM 21S120W TO 15S122W.

.E TO SE WINDS 20 TO 25 KT S OF 19S E OF 138W.
.24 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF 17S E OF 140W.
.48 HOUR FORECAST SE TO E WINDS 20 TO 30 KT S OF A LINE FROM
21S120W TO 15S130W TO 15S138W.

.SEAS 8 TO 11 FT S OF 19S E OF 138W.
.24 HOUR FORECAST SEAS 8 TO 12 FT S OF A LINE FROM 23S166E TO
18S160E. SEAS 8 TO 11 FT S OF A LINE FROM 17S120W TO 16S130W TO
19S143W.
.48 HOUR FORECAST SEAS 12 TO 15 FT S OF 21S E OF 125W. SEAS 8 TO
11 FT ELSEWHERE S OF A LINE FROM 18S120W TO 14S126W TO 13S136W TO
25S146W. SEAS 8 TO 11 FT S OF A LINE FROM 25S177E TO 17S160E.

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

.SCATTERED MODERATE TSTMS S OF 23S E OF 123W...AND FROM 18S TO 13S
BETWEEN 143W AND 151W.

.ISOLATED MODERATE TSTMS FROM 08S TO 03S BETWEEN 163W AND
170W...AND N OF 04S W OF 171E.



$$

.FORECASTER TSAMOUS. HONOLULU HI.