High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 230338
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC SUN APR 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 23 2017.
24 HOUR FORECAST VALID 0000 UTC APR 24 2017.
48 HOUR FORECAST VALID 0000 UTC APR 25 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S179E TO 21S176E TO 17S172E MOVING E 10 KT . NE
WINDS 20 TO 25 KT AND ISOLATED MODERATE TO STRONG TSTMS WITHIN
360 NM E OF FRONT S OF 21S.
.24 HOUR FORECAST FRONT FROM 25S175W TO 19S178E. ASSOCIATED
WINDS MOVED S OF FORECAST AREA.
.48 HOUR FORECAST DISSIPATING FRONT FROM 25S172W TO 19S179E.

.FRONT FROM 25S150W TO 24S162W MOVING E 10 KT ALONG 25S AND
NEARLY STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT FROM 25S133W TO 22S150W TO 24S162W. E
WINDS 20 TO 25 KT S OF FRONT.
.48 HOUR FORECAST FRONT DISSIPATED. WINDS DECREASED TO 20 KT OR
LESS.

.TROUGH FROM 07S170W TO 08S156W TO 08S145W NEARLY STATIONARY.
ISOLATED MODERATE TO STRONG TSTMS WITHIN 300 NM OF TROUGH...AND
WITHIN 60 NM OF A LINE FROM 09S131W TO 09S138W.
.24 HOUR FORECAST TROUGH FROM 06S180W TO 07S165W TO 10S150W.
.48 HOUR FORECAST TROUGH FROM 07S170E TO 10S165W TO 10S150W.

.TROUGH FROM 15S168W TO 20S168W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 240 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 19S132W TO 24S130W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH FROM 20S134W TO 25S132W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 07S172W TO 18S180W TO 16S174E MOVING E 10 KT.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 11 FT S OF A LINE FROM 25S147W TO 17S170W TO 25S163E.
.24 HOUR FORECAST SEAS 8 TO 12 FT S OF A LINE FROM 25S131W TO
12S160W TO 25S176W TO 21S170E TO 25S166E.
.48 HOUR FORECAST SEAS 12 TO 14 FT S OF A LINE FROM 25S133W TO
19S154W TO 25S163W. SEAS 8 TO 12 FT ELSEWHERE S OF A LINE FROM
23S120W TO 11S160W TO 25S173E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ISOLATED MODERATE TSTMS N OF 13S W OF 176W.

.ITCZ FROM 02S120W TO 02S129W. ISOLATED MODERATE TSTMS WITHIN 120
NM S OF ITCZ.

$$

.FORECASTER WROE. HONOLULU HI.



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