High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 252253 CCA
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC SAT FEB 25 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC FEB 25 2017.
24 HOUR FORECAST VALID 1800 UTC FEB 26 2017.
48 HOUR FORECAST VALID 1800 UTC FEB 27 2017.

.WARNINGS...

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 25S165W 1011 MB MOVING ESE 10 KT. TROUGH FROM LOW TO 22S165W
TO 18S168W. ISOLATED MODERATE TSTMS WITHIN 120 NM E OF TROUGH.
.24 HOUR FORECAST LOW MOVED S OF AREA. TROUGH FROM 25S164W TO
21S165W TO 18S171W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.LOW 13S172E 1007 MB MOVING W 10 KT. TROUGH FROM 24S170W TO
18S176W TO LOW TO 14S160E. SCATTERED MODERATE TSTMS FROM 08S TO
11S BETWEEN 162E AND 169E. ISOLATED MODERATE TSTMS ELSEWHERE
WITHIN 180 NM OF LOW AND TROUGH.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 17S178W TO 14S160E.
.48 HOUR FORECAST TROUGH FROM 18S166E TO 16S160E.

.FRONT FROM 25S142W TO 23S145W NEARLY STATIONARY AND DISSIPATING.
ISOLATED TSTMS WITHIN 30 NM OF FRONT.
.24 HOUR FORECAST FRONT DISSIPATED.

.TROUGH FROM 06S120W TO 08S125W MOVING NW 10 KT.
.24 HOUR FORECAST TROUGH FROM 03S120W TO 06S126W.
.48 HOUR FORECAST TROUGH FROM 04S120W TO 08S134W.

.TROUGH FROM 10S139W TO 07S150W MOVING SW SLOWLY. ISOLATED
TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST WEAKENING TROUGH FROM 11S140W TO 07S145W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 11S154W TO 09S161W TO 05S166W MOVING SW SLOWLY.
SCATTERED MODERATE TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 11S154W TO 07S166W.
.48 HOUR FORECAST TROUGH FROM 12S159W TO 05S175W.

.TROUGH FROM 17S167W TO 12S168W TO 09S171W MOVING WNW 15 KT.
SCATTERED MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 14S171W TO 06S178E.
.48 HOUR FORECAST WEAKENING TROUGH FROM 08S177E TO 03S170E.

.HIGH 21S157W 1014 MB MOVING SSW 10 KT. RIDGE FROM HIGH TO
18S165W.
.24 HOUR FORECAST HIGH DISSIPATED.

.RIDGE FROM 25S131W TO 22S142W MOVING S SLOWLY.

.RIDGE FROM 12S172W TO 10S175E TO 06S160E MOVING SW SLOWLY.

.48 HOUR FORECAST E WINDS 20 TO 25 KT S OF 19S BETWEEN 160E AND
168E.

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

.24 HOUR FORECAST SEAS 8 TO 9 FT S OF 18S BETWEEN 120W AND 126W.
.48 HOUR FORECAST SEAS DIMINISHED TO 8 FT OR LESS.

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

.ISOLATED TSTMS FROM 12S TO 16S BETWEEN 137W AND 147W.

$$

.FORECASTER BRAVENDER. HONOLULU HI.


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