High Seas Forecast
Issued by NWS

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FZPS40 PHFO 161525
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC WED AUG 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 16 2017.
24 HOUR FORECAST VALID 1200 UTC AUG 17 2017.
48 HOUR FORECAST VALID 1200 UTC AUG 18 2017.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 25S174W TO 17S178W TO 12S177E TO 06S164E MOVING E 10 KT
S OF 13S...AND NEARLY STATIONARY ELSEWHERE. N TO NE WINDS 25 TO 35
KT S OF 19S BETWEEN FRONT AND 168W. NE TO E WINDS 20 TO 30 KT S OF
12S BETWEEN 160W AND 168W. SE TO S WINDS 20 TO 25 KT BETWEEN FRONT
AND 164E FROM 12S TO 18S. SEE MORE WINDS DESCRIBED BELOW. ISOLATED
MODERATE TSTMS WITHIN 240 NM NE AND E OF FRONT S OF 16S...AND WITHIN
60 NM OF FRONT W OF 168E.
.24 HOUR FORECAST FRONT FROM 25S167W TO 20S169W TO 12S180E TO
09S171E. N TO NE WINDS 25 TO 40 KT S OF 20S BETWEEN FRONT AND 162W.
NE TO E WINDS 20 TO 30 KT S OF 10S BETWEEN 155W AND 162W. SEE MORE
WINDS DESCRIBED BELOW.
.48 HOUR FORECAST FRONT FROM 25S163W TO 17S170W TO 13S177W. NE TO E
WINDS 20 TO 25 KT S OF LINE FROM 10S155W TO 14S162W TO 21S164W. SEE
MORE WINDS DESCRIBED BELOW.

...GALE WARNING...
.FRONT FROM 25S120W TO 17S133W THENCE TROUGH TO 17S137W TO 18S141W.
FRONT NEARLY STATIONARY...AND TROUGH MOVING N SLOWLY. SEE WINDS
DESCRIBED BELOW.
.24 HOUR FORECAST FRONT FROM 25S124W TO 20S126W TO 15S134W TO
12S144W. TROUGH DISSIPATED. NW TO N WINDS 20 TO 30 KT WITHIN 270
NM E OF FRONT S OF 16S. SEE MORE WINDS DESCRIBED BELOW.
.36 HOUR FORECAST FRONT FROM 25S123W TO 22S124W TO 14S133W TO
11S142W. NW TO N WINDS 25 TO 35 KT OVER FORECAST WATERS S OF 16S E
OF FRONT.
.48 HOUR FORECAST FRONT FROM 23S120W TO 14S128W TO 11S136W. NW TO N
WINDS 25 TO 35 KT OVER FORECAST WATERS S OF 17S E OF FRONT. W TO NW
WINDS 20 TO 25 KT S OF 23S E OF 123W. SEE MORE WINDS DESCRIBED BELOW.

.SYNOPSIS AND FORECAST.

.RIDGE FROM 19S120W TO 13S129W NEARLY STATIONARY.

.RIDGE FROM 21S167W TO 12S176W MOVING E 10 KT AND GRADUALLY ERODING
FROM THE W.

.24 HOUR FORECAST NEW HIGH 24S170E 1017 MB.
.48 HOUR FORECAST HIGH 24S175W 1016 MB.

.48 HOUR FORECAST NEW FRONT FROM 25S165E TO 23S160E. W TO NW WINDS
20 TO 25 KT S OF 23S W OF 172E.

.E TO SE WINDS 20 TO 30 KT S OF LINE FROM 21S135W TO 18S140W
TO 12S155W TO 12S160W.
.24 HOUR FORECAST E TO SE WINDS 20 TO 30 KT S OF LINE FROM 21S139W
TO 13S144W TO 10S155W.
.48 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF LINE FROM 19S139W
TO 10S146W TO 10S155W.

.SEAS 12 TO 15 FT S OF 22S BETWEEN 172W AND 176W. SEAS 8 TO 12 FT
ELSEWHERE S OF LINE FROM 20S137W TO 10S158W TO 10S170W TO 22S178W.
.24 HOUR FORECAST SEAS 12 TO 14 FT S OF 20S BETWEEN 165W AND 170W.
SEAS 8 TO 12 FT ELSEWHERE S OF LINE FROM 16S139W TO 08S156W TO
10S165W TO 21S175W TO 23S177E. SEAS 8 TO 9 FT S OF 22S E OF 128W.
.48 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE FROM 18S120W TO 19S125W
TO 23S129W TO 10S144W TO 08S153W TO 09S164W TO 20S170W TO 22S179W.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LESS OVER REST OF FORECAST
AREA.

.ISOLATED MODERATE TSTMS FROM 13S TO 16S BETWEEN 162W AND 172W...AND
FROM 05S TO 08S BETWEEN 166W AND 171W.

$$

.FORECASTER KINEL. HONOLULU HI.



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