High Seas Forecast
Issued by NWS

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FZPS40 PHFO 240342
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC FRI FEB 24 2017

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 24 2017.
24 HOUR FORECAST VALID 0000 UTC FEB 25 2017.
48 HOUR FORECAST VALID 0000 UTC FEB 26 2017.

.WARNINGS...

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 18S175W 1008 MB MOVING SE 20 KT. TROUGH FROM LOW TO 15S176E
TO 13S160E. WINDS 20 TO 25 KT WITHIN 180 NM NE SEMICIRCLE OF
LOW...AND WITHIN 120 NM N OF TROUGH BETWEEN 175W AND 172E.
SCATTERED MODERATE TSTMS WITHIN 120 NM OF LOW...WITHIN 240 NM N OF
TROUGH BETWEEN 178W AND 169E...AND WITHIN 360 NM N OF TROUGH W OF
169E.
.24 HOUR FORECAST LOW 22S167W 1008 MB. TROUGH FROM LOW TO 17S172W
TO 14S160E. WINDS 20 TO 25 KT WITHIN 180 NM E OF LOW.
.48 HOUR FORECAST LOW MOVED S OF AREA. TROUGH FROM 25S165W TO
18S170W TO 15S179E TO 14S160E. WINDS DIMINISHED TO 20 KT OR LESS.

.LOW 21S168W 1008 MB MOVING ESE 20 KT. TROUGH FROM 25S164W TO LOW
TO 18S171W. ISOLATED MODERATE TSTMS WITHIN 240 NM E OF LOW AND
TROUGH.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 25S159W TO 22S161W.
.48 HOUR FORECAST TROUGH MOVED S OF AREA.

.TROUGH FROM 12S159W TO 04S172W MOVING SW 10 KT. SCATTERED
MODERATE TSTMS WITHIN 360 NM SW OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 15S160W TO 06S174W.
.48 HOUR FORECAST WEAKENING TROUGH FROM 16S165W TO 09S176W.

.TROUGH FROM 07S120W TO 09S141W TO 06S154W MOVING SW 10 KT.
ISOLATED TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 07S120W TO 10S146W TO 07S158W.
.48 HOUR FORECAST WEAKENING TROUGH FROM 06S120W TO 08S134W.

.HIGH 15S159W 1011 MB MOVING SE SLOWLY. RIDGE FROM HIGH TO
08S177W TO 06S160E.
.24 HOUR FORECAST HIGH 18S157W 1011 MB.
.48 HOUR FORECAST HIGH 22S157W 1014 MB.

.RIDGE FROM 23S120W TO 21S139W TO 15S150W MOVING S SLOWLY.

.OTHERWISE WINDS 20 KT OR LESS OVER REMAINDER OF AREA.

.SEAS 8 TO 12 FT S OF A LINE FROM 25S151W TO 21S155W TO 22S162W.
SEAS 8 TO 9 FT FROM 15S TO 17S BETWEEN 174W AND 178W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 24S BETWEEN 145W AND 151W.
.48 HOUR FORECAST SEAS DIMINISHED TO 8 FT OR LESS.

.OTHERWISE SEAS 8 FT OR LESS OVER REMAINDER OF AREA.

.SCATTERED MODERATE TSTMS FROM 21S TO 23S BETWEEN 154W AND 161W.

$$

.FORECASTER BRAVENDER. HONOLULU HI.



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