High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 171525
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC THU AUG 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 17 2017.
24 HOUR FORECAST VALID 1200 UTC AUG 18 2017.
48 HOUR FORECAST VALID 1200 UTC AUG 19 2017.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 25S168W TO 18S170W TO 12S180E TO 05S160E MOVING E 10 KT
S OF 15S...AND NEARLY STATIONARY ELSEWHERE. N TO NE WINDS 25 TO 35
KT S OF 20S BETWEEN FRONT AND 163W. NE TO E WINDS 20 TO 30 KT S OF
11S BETWEEN 155W AND 163W. SEE MORE WINDS DESCRIBED BELOW. ISOLATED
MODERATE TO LOCALLY STRONG TSTMS WITHIN 75 NM OF FRONT W OF 164E...
AND WITHIN 75 NM NE AND E OF FRONT S OF 15S.
.24 HOUR FORECAST FRONT FROM 25S165W TO 17S170W TO 12S179W. N TO NE
WINDS 20 TO 30 KT S OF 20S BETWEEN FRONT AND 160W. NE TO E WINDS 20
TO 25 KT S OF 11S BETWEEN 155W AND 160W. SEE MORE WINDS DESCRIBED
BELOW.
.48 HOUR FORECAST WEAK FRONT FROM 25S164W TO 20S168W TO 14S178E.
ASSOCIATED WINDS EASED TO 20 KT OR LESS. SEE WINDS DESCRIBED BELOW.

...GALE WARNING...
.LOW 25S124W 1007 MB. FRONT FROM LOW TO 20S127W TO 15S133W TO
12S149W. NW TO N WINDS 25 TO 35 KT OVER FORECAST WATERS S OF 17S E
OF FRONT. SE TO S WINDS 20 TO 30 KT S OF 24S BETWEEN FRONT AND 129W.
SEE MORE WINDS DESCRIBED BELOW. ISOLATED MODERATE TSTMS S OF 18S
BETWEEN 123W AND 135W.
.24 HOUR FORECAST LOW MOVED FAR S OF FORECAST AREA. FRONT FROM
22S120W TO 13S130W TO 10S138W. NW TO N WINDS 25 TO 35 KT OVER
FORECAST WATERS S OF 17S E OF FRONT. SEE MORE WINDS DESCRIBED BELOW.
.48 HOUR FORECAST DISSIPATING FRONT FROM 18S120W TO 11S130W.
ASSOCIATED WINDS EASED TO 20 KT OR LESS.

.SYNOPSIS AND FORECAST.

.24 HOUR FORECAST FRONT FROM 25S165E TO 23S160E. SW TO W WINDS 20 TO
25 KT S OF 24S W OF 172E.
.48 HOUR FORECAST FRONT FROM 25S175E TO 19S165E. WINDS 20 TO 30 KT S
OF LINE FROM 20S160E TO 24S180E.

.HIGH 24S171E 1017 MB MOVING E 30 KT. RIDGE FROM HIGH TO 22S160E.
.24 HOUR FORECAST HIGH 24S173W 1017 MB.
.48 HOUR FORECAST HIGH MOVED S OF FORECAST AREA.

.RIDGE FROM 16S120W TO 12S132W NEARLY STATIONARY.

.RIDGE FROM 25S158W TO 15S168W TO 12S174W MOVING E SLOWLY AND
GRADUALLY ERODING FROM THE W.

.E TO SE WINDS 20 TO 30 KT S OF LINE FROM 21S138W TO 12S144W TO
12S155W.
.24 HOUR FORECAST E TO SE WINDS 20 TO 25 KT S OF LINE FROM 22S135W
TO 11S145W TO 11S155W.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 11S TO 15S BETWEEN 152W
AND 160W.

.SEAS 12 TO 16 FT S OF 21S BETWEEN 165W AND 170W. SEAS 8 TO 12 FT
ELSEWHERE S OF LINE FROM 16S138W TO 10S153W TO 10S165W TO 21S174W TO
22S177E...AND S OF 20S E OF 129W.
.24 HOUR FORECAST SEAS 8 TO 12 FT S OF LINE FROM 18S120W TO 20S136W
TO 10S143W TO 08S152W TO 08S166W TO 20S172W TO 22S179W.
.48 HOUR FORECAST SEAS 12 TO 17 FT S OF 22S W OF 169E. SEAS 8 TO 12
FT ELSEWHERE S OF LINE FROM 20S160E TO 22S176E TO 24S178W. SEAS 8 TO
11 FT S OF 19S E OF 140W. SEAS 8 TO 10 FT FROM 09S TO 23S BETWEEN
156W AND 168W. SEAS 8 TO 9 FT FROM 09S TO 21S BETWEEN 145W AND 156W.

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

.ISOLATED MODERATE TO STRONG TSTMS FROM 03S TO 07S BETWEEN 168W AND
174W.

$$

.FORECASTER KINEL. HONOLULU HI.


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