High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 181025
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC WED JAN 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC JAN 18 2017.
24 HOUR FORECAST VALID 0600 UTC JAN 19 2017.
48 HOUR FORECAST VALID 0600 UTC JAN 20 2017.

.WARNINGS.

...GALE WARNING...
.LOW 19S154W 1000 MB NEARLY STATIONARY. TROUGH FROM 21S139W TO
19S146W TO LOW TO 14S166W TO 13S172W. WINDS 25 TO 35 KT WITHIN 180
NM OF LOW E SEMICIRCLE. WINDS 20 TO 30 KT ELSEWHERE WITHIN 270 N AND
NE OF LOW AND TROUGH BETWEEN 151W AND 163W. SCATTERED MODERATE TO
STRONG TSTMS FROM 09S TO 12S BETWEEN 162W AND 172W. ISOLATED
MODERATE TO LOCALLY STRONG TSTMS ELSEWHERE BETWEEN TROUGH AND 12S...
AND FROM 13S TO 22S BETWEEN 133W AND 139W.
.24 HOUR FORECAST LOW 19S155W 1001 MB. TROUGH FROM 25S144W TO LOW TO
17S161W TO 25S165W. WINDS 30 TO 45 KT WITHIN 390 NM OF LOW E
SEMICIRCLE. WINDS 20 TO 30 KT ELSEWHERE FROM 10S TO 13S BETWEEN 150W
AND 160W.
.48 HOUR FORECAST LOW 25S148W 1001 MB. TROUGH FROM LOW TO 19S156W TO
19S160W TO 25S166W. WINDS 30 TO 40 KT WITHIN 300 NM OF LOW E
SEMICIRCLE. WINDS 20 TO TO 30 KT ELSEWHERE FROM 16S TO 20S BETWEEN
146W AND 153W.

.SYNOPSIS AND FORECAST.

.LOW 24S171W 1004 MB. TROUGH FROM LOW TO 20S180E TO 15S170E TO
14S160E. LOW AND TROUGH NEARLY STATIONARY. ISOLATED MODERATE TSTMS
WITHIN 330 NM N AND NE OF TROUGH W OF 175E.
.24 HOUR FORECAST LOW 25S171W 1004 MB. TROUGH FROM LOW TO 19S180E TO
12S172E TO 14S160E.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 18S174W TO 11S174E TO
12S160E.

.LOW 21S129W 1013 MB NEARLY STATIONARY. TROUGH FROM 22S120W TO LOW.
ISOLATED MODERATE TSTMS FROM 17S TO 22S E OF 130W...AND FROM 15S TO
17S BETWEEN 130W AND 132W.
.24 HOUR FORECAST LOW 21S129W 1016 MB. TROUGH FROM 22S120W TO LOW.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 19S120W TO 21S132W.

.RIDGE FROM 16S120W TO 05S160W TO 03S180E TO 02S160E NEARLY
STATIONARY.

.WINDS 20 KT OR LESS OVER REST OF FORECAST AREA.

.SEAS 8 TO 14 FT S OF 10S BETWEEN 152W AND 157W. SEAS 8 TO 11 FT S
OF 23S BETWEEN 157W AND 162W...AND FROM 10S TO 13S BETWEEN 157W AND
164W.
.24 HOUR FORECAST SEAS 12 TO 24 FT BOUNDED BY 12S157W TO 12S153W TO
21S148W TO 24S149W TO 24S153W TO 17S155W TO 12S157W. SEAS 8 TO 12 FT
ELSEWHERE FROM 09S TO 12S BETWEEN 152W AND 164W...AND S OF 24S
BETWEEN 147W AND 162W.
.48 HOUR FORECAST SEAS 12 TO 20 FT S OF 20S BETWEEN 145W AND 151W.
SEAS 8 TO 12 FT ELSEWHERE S OF LINE FROM 11S158W TO 13S150W TO
23S142W.

.SEAS 8 FT OR LESS OVER REST OF FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 07S TO 11S BETWEEN 174W AND 179E.

$$

.FORECASTER KINEL. HONOLULU HI.


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