High Seas Forecast
Issued by NWS

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FZPS40 PHFO 301525
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC THU MAR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 30 2017.
24 HOUR FORECAST VALID 1200 UTC MAR 31 2017.
48 HOUR FORECAST VALID 1200 UTC APR 01 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S134W TO 22S154W...CONTINUING AS A TROUGH TO 16S164W
TO 13S169E TO 09S180E. FRONT MOVING NNE SLOWLY E OF 140W. TROUGH
AND REMAINDER OF FRONT NEARLY STATIONARY. E TO SE WINDS 20 TO 30 KT
S OF FRONT W OF 138W...AND S OF 21S BETWEEN 154W AND 172W.
SCATTERED MODERATE TO STRONG TSTMS FROM 04S TO 17S BETWEEN 170W AND
180E...AND S OF 17S BETWEEN 145W AND 158W. ISOLATED MODERATE TSTMS
ELSEWHERE WITHIN 90 NM OF FRONT...AND FROM 11S TO 20S BETWEEN 158W
AND 170W.
.24 HOUR FORECAST NEW LOW 16S168W 1009 MB. FRONT FROM 25S127W TO
23S150W TO 22S165W...CONTINUING AS A TROUGH TO LOW TO 12S175W. E TO
SE WINDS 20 TO 30 KT S OF FRONT W OF 130W...AND S OF 20S BETWEEN
165W AND 175W.
.36 HOUR FORECAST LOW DISSIPATED. NEW LOW 17S155W 1007 MB. FRONT
FROM 25S125W TO 24S148W...CONTINUING AS A TROUGH TO LOW TO 16S162W.
E TO SE WINDS 20 TO 30 KT S OF FRONT...AND S OF 22S BETWEEN 148W
AND 175W.
.48 HOUR FORECAST LOW 19S153W 1007 MB. FRONT MOVED S OF FORECAST
AREA. TROUGH FROM 25S150W TO LOW TO 16S162W. E TO SE WINDS 20 TO 30
KT S OF 22S BETWEEN 153W AND 160W.

.TROUGH FROM 09S160E TO 08S169E TO 09S180E NEARLY STATIONARY.
SCATTERED MODERATE TO STRONG TSTMS WITHIN 300 NM N...AND WITHIN
150 NM S...OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 10S160E TO 09S172W TO 11S180E.
.48 HOUR FORECAST TROUGH FROM 09S160E TO 08S170E.

.TROUGH FROM 09S135W TO 10S144W TO 12S151W TO 12S158W NEARLY
STATIONARY. SCATTERED MODERATE TO STRONG TSTMS FROM 08S TO 17S
BETWEEN 145W AND 158W. ISOLATED MODERATE TO STRONG TSTMS WITHIN
270 NM OF TROUGH E OF 145W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 25S172E TO 16S165E NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 240 NM NE OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.24 HOUR FORECAST NEW TROUGH THROUGH 25S160E. N TO NW WINDS 20 TO
25 KT S OF 23S W OF 163E.
.48 HOUR FORECAST TROUGH FROM 25S164E TO 20S160E. WINDS DIMINISHED
TO 20 KT OR LESS.

.RIDGE FROM 23S120W TO 22S132W MOVING N SLOWLY.

.RIDGE FROM 25S164E TO 20S160E MOVING E SLOWLY.

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

.SEAS 8 TO 13 FT S OF A LINE FROM 25S136W TO 18S162W TO 18S171W.
SEAS 8 TO 9 FT FROM 11S TO 19S E OF 130W.
.24 HOUR FORECAST SEAS 8 TO 13 FT S OF 21S E OF 140W...AND S OF 18S
BETWEEN 140W AND 175W.
.48 HOUR FORECAST SEAS 8 TO 11 FT S OF 20S BETWEEN 135W AND 178E.
SEAS 8 TO 10 FT S OF 14S E OF 135W. SEAS 8 TO 9 FT S OF 22S W OF
166E.

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

.ISOLATED MODERATE TSTMS FROM 03S TO 14S E OF 135W...AND FROM 04S
TO 08S BETWEEN 163W AND 170W.

$$

.FORECASTER HOUSTON. HONOLULU HI.



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