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266
FZPS40 PHFO 211715
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN DEC 21 2014

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 21 2014.
24 HOUR FORECAST VALID 1200 UTC DEC 22 2014.
48 HOUR FORECAST VALID 1200 UTC DEC 23 2014.

.WARNINGS.

...GALE WARNING...
.LOW 17S157W 1003 MB MOVING E 12 KT. TROUGHS FROM LOW TO 20S152W
AND FROM LOW TO 16S160W. WINDS 20 TO 30 KT SEAS 8 TO 12 FT WITHIN
150 NM NE SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW 18S152W 998 MB. TROUGHS FROM LOW TO 16S157W
AND FROM LOW TO 20S145W TO 25S140W.
WINDS 20 TO 35 KT SEAS 8 TO 15 FT WITHIN 250 NM NE SEMICIRCLE OF
LOW...AND WITHIN 120 NM ELSEWHERE OF LOW.
.48 HOUR FORECAST LOW 20S147W 997 MB. TROUGHS FROM LOW TO 17S149W
AND FROM LOW TO 25S138W.
WINDS 20 TO 35 KT SEAS 8 TO 15 FT WITHIN 250 NM NE SEMICIRCLE OF
LOW AND WITHIN 120 NM ELSEWHERE OF LOW.

...GALE WARNING...
.LOW 14S166W 1003 MB MOVING SE 12 KT. TROUGHS FROM LOW TO 16S160W
AND FROM LOW TO 13S175W. WINDS 20 TO 25 KT SEAS 8 TO 10 FT WITHIN
200 NM NE SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW 15S162W 1000 MB. TROUGHS FROM LOW TO 16S157W...
AND FROM LOW TO 13S170W.
WINDS 20 TO 30 KT SEAS 8 TO 12 FT WITHIN 240 NM OF LOW NE
SEMICIRCLE.
.48 HOUR FORECAST LOW 14S158W 996 MB. TROUGHS FROM LOW TO 12S170W
AND FROM LOW TO 17S149W.
WINDS 25 TO 40 KT SEAS 12 TO 18 FT WITHIN 200 NM NE SEMICIRCLE OF
LOW AND WITHIN 140 NM ELSEWHERE OF LOW.
WINDS 20 TO 30 KT SEAS 8 TO 12 FT ELSEWHERE WITHIN 260 NM NE
SEMICIRCLE OF LOW AND WITHIN 180 NM ELSEWHERE OF LOW.

.SYNOPSIS AND FORECAST.

.CONTINUATION OF TROUGH FROM FIRST GALE LOW...20S152W TO 18S144W TO
20S140W TO 25S135W...MOVING SW TO 15 KT. SCATTERED MODERATE TSTMS
WITHIN 150 NM S OF TROUGH.
.24 HOUR FORECAST...REFER TO FIRST GALE LOW.

.LOW 12S179E 1006 MB. TROUGHS FROM LOW TO 04S170E AND FROM LOW TO
13S175W. WIDELY SCATTERED MODERATE TSTMS WITHIN 200 NM N OF LOW AND
TROUGH W OF LOW.
.24 HOUR FORECAST LOW 13S178W. TROUGHS FROM LOW TO 11S175E AND FROM
LOW TO 13S170W.
.48 HOUR FORECAST LOW 13S174W 1005 MB. TROUGHS FROM LOW TO 10S170E
AND FROM LOW TO 12S170W.

.DISSIPATING TROUGH FROM 23S167E TO 13S170E MOVING W SLOWLY.
ISOLATED TSTMS WITHIN 100 NM EITHER SIDE OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE 25S126W TO 16S140W TO 06S165W TO 00S170E NEARLY STATIONARY.

.SE WINDS 20 TO 25 KT SEAS 8 TO 10 FT ELSEWHERE S OF DEVELOPING GALE
LOWS AND ASSOCIATED TROUGHS.
.24 HOUR FORECAST SE WINDS 20 TO 25 KT SEAS 8 TO 10 FT ELSEWHERE S
OF GALE LOWS AND ASSOCIATED TROUGH.
.48 HOUR FORECAST NO SIGNIFICANT CHANGE.

.24 HOUR FORECAST NW TO N WINDS INCREASING TO 20 TO 25 KT ELSEWHERE
WITHIN 250 NM OF N OF TROUGHS ASSOCIATED WITH THE GALE LOWS.
.48 HOUR FORECAST NW TO N WINDS 20 TO 25 KT ELSEWHERE WITHIN 260 NM
N OF TROUGHS ASSOCIATED WITH THE GALE LOWS.

.OTHERWISE WINDS 20 KT OR LESS...SEAS 8 FT OR LESS.

.WIDELY SCATTERED MODERATE TSTMS WITHIN 350 NM N AND WITHIN 200 NM
S OF DEVELOPING GALE LOWS AND ASSOCIATED TROUGHS.

$$
.FORECASTER LAU. HONOLULU HI.













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