High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 291531
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC WED MAR 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAR 29 2017.
24 HOUR FORECAST VALID 1200 UTC MAR 30 2017.
48 HOUR FORECAST VALID 1200 UTC MAR 31 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT JUST S OF AREA NEARLY STATIONARY...WILL BEGIN MOVING SLOWLY
N WITHIN NEXT 6 HOURS. ISOLATED MODERATE TSTMS S OF 23S BETWEEN
136W AND 149W.
.12 HOUR FORECAST FRONT FROM 25S143W TO 24S157W. E TO SE WINDS 20
TO 25 KT S OF 23S BETWEEN 150W AND 168W.
.24 HOUR FORECAST FRONT FROM 25S133W TO 24S150W TO 23S160W...
CONTINUING AS A TROUGH TO 17S166W TO 11S180E. E TO SE WINDS 20 TO
30 KT S OF 21S BETWEEN 144W AND 170W.
.48 HOUR FORECAST FRONT FROM 25S125W TO 23S150W TO 22S165W...
CONTINUING AS A TROUGH TO 10S175W. E TO SE WINDS 20 TO 30 KT S OF
FRONT AND TROUGH BETWEEN 135W AND 170W.

.TROUGH FROM 23S151W TO 17S163W TO 10S175W MOVING SW SLOWLY.
SCATTERED MODERATE TO STRONG TSTMS WITHIN 450 NM NE OF TROUGH E OF
163W. ISOLATED MODERATE TSTMS WITHIN 330 NM OF TROUGH W OF 167W.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED ABOVE.

.TROUGH FROM 25S175E TO 15S165E MOVING WSW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 390 NM NE OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 25S171E TO 17S164E.
.48 HOUR FORECAST WEAKENING TROUGH FROM 25S169E TO 20S163E.

.TROUGH FROM 06S160E TO 08S168E MOVING S 10 KT. ISOLATED
MODERATE TSTMS FROM 04S TO 11S W OF 169E.
.24 HOUR FORECAST TROUGH FROM 09S160E TO 12S169E.
.48 HOUR FORECAST WEAKENING TROUGH FROM 09S160E TO 13S166E.

.TROUGH FROM 06S120W TO 05S123W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 04S TO 14S E OF 126W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 25S172W TO 16S180E TO 10S172E MOVING W SLOWLY.

.RIDGE FROM 25S161E TO 23S160E MOVING E SLOWLY.

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

.SEAS 8 TO 10 FT S OF 20S BETWEEN 153W AND 165W. SEAS 8 TO 9 FT S
OF 12S E OF 138W.
.24 HOUR FORECAST SEAS 8 TO 13 FT S OF A LINE FROM 25S136W TO
19S162W TO 19S172W.
.48 HOUR FORECAST SEAS 8 TO 13 FT S OF 20S E OF 174W.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 04S TO 09S BETWEEN 172W AND 171E...
AND FROM 03S TO 08S BETWEEN 160W AND 170W.

.ITCZ FROM 07S129W TO 09S139W TO 09S160W. SCATTERED MODERATE TO
LOCALLY STRONG TSTMS WITHIN 300 NM N OF ITCZ E OF 142W...AND
ELSEWHERE WITHIN 180 NM OF ITCZ.

$$

.FORECASTER HOUSTON. HONOLULU HI.


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