The High Seas Forecast for the South Pacific

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FZPS40 PHFO 211538
HSFSP 

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC TUE FEB 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 21 2017.
24 HOUR FORECAST VALID 1200 UTC FEB 22 2017.
48 HOUR FORECAST VALID 1200 UTC FEB 23 2017.

.WARNINGS...

...TROPICAL STORM WARNING...
.TROPICAL CYCLONE BART 22.6S 162.3W 994 MB MOVING SE 19 KT. 
TROUGH FROM 25S159W TO TC TO 19S170W MOVING S 10 KT. MAXIMUM 
SUSTAINED WINDS 45 KT GUSTS 55 KT. WINDS 34 KT OR GREATER AND SEAS 
12 FT OR HIGHER WITHIN 120 NM E SEMICIRCLE AND NW QUADRANT...AND
60 NM SW QUADRANT. WINDS 20 TO 33 KT ELSEWHERE WITHIN 270 NM 
NE SEMICIRCLE...AND ELSEWHERE WITHIN 90 NM SW SEMICIRCLE OF TC.
NUMEROUS MODERATE TO STRONG TSTMS WITHIN 210 NM SE SEMICIRCLE OF 
TC. SCATTERED MODERATE TO LOCALLY STRONG TSTMS ELSEWHERE WITHIN 
240 NM OF TC AND TROUGH. 
.24 HOUR FORECAST TROPICAL CYCLONE BART S OF AREA 27.3S 155.8W. 
TROUGH FROM TC TO 25S154W TO 22S154W. MAXIMUM SUSTAINED WINDS 45 
KT GUSTS 55 KT. WINDS 20 TO 30 KT OVER FORECAST WATERS S OF 23S 
BETWEEN 151W AND 157W. SEE SEAS BELOW.
.48 HOUR FORECAST POST-TROPICAL CYCLONE BART MOVED FAR S OF 
AREA. TROUGH FROM 25S145W TO 23S146W. NW WINDS 20 TO 25 KT WITHIN 
210 NM E OF TROUGH. SEE SEAS BELOW.

...STORM WARNING...
.LOW...POSSIBLE TC...19S178W 1001 MB MOVING SE 25 KT. TROUGH FROM 
19S170W TO LOW TO 15S170E TO 15S160E MOVING S SLOWLY. WINDS 30 TO 
40 KT WITHIN 240 NM N AND NE QUADRANTS OF LOW. WINDS 20 TO 30 KT 
ELSEWHERE WITHIN 390 NM N AND NE OF LOW AND TROUGH BETWEEN 174W AND  
170E...AND WITHIN 210 NM SW SEMICIRCLE OF LOW.  NUMEROUS MODERATE 
TO STRONG TSTMS WITHIN 180 NM E SEMICIRCLE OF LOW. SCATTERED 
MODERATE TO LOCALLY STRONG TSTMS ELSEWHERE WITHIN 300 NM OF LOW AND 
TROUGH.
.24 HOUR FORECAST LOW...LIKELY TC...25S166W 995 MB. TROUGH FROM
LOW TO 22S167W TO 16S178E TO 15S172E. WINDS 35 TO 50 KT WITHIN 240 
NM N AND NE QUADRANTS OF LOW. WINDS 25 TO 40 KT ELSEWHERE S OF 18S 
BETWEEN 162W AND 167W...AND WITHIN 150 NM N OF TROUGH BETWEEN 167W 
AND 171W. WINDS 20 TO 30 KT ELSEWHERE WITHIN 300 NM N AND NE OF 
LOW AND TROUGH E OF 176E.
.48 HOUR FORECAST LOW...POSSIBLE TC...MOVED FAR S OF AREA. TROUGH 
FROM 25S157W TO 18S170W TO 15S170E TO 16S160E. WINDS 20 TO 30 KT 
WITHIN 240 NM E OF TROUGH S OF 18S...AND WITHIN 180 NM N OF TROUGH
BETWEEN 170W AND 175E.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 07S159W TO 14S149W MOVING SW SLOWLY. SCATTERED 
MODERATE TSTMS WITHIN 210 NM OF TROUGH. 
.24 HOUR FORECAST WEAKENING TROUGH FROM 11S159W TO 16S152W. 
.48 HOUR FORECAST WEAK TROUGH FROM 14S156W TO 17S152W.

.TROUGH FROM 25S143W TO 18S151W MOVING S 10 KT. ISOLATED MODERATE  
TSTMS WITHIN 180 NM OF TROUGH. 
.24 HOUR FORECAST TROUGH MOVED S OF AREA.

.RIDGE FROM 24S120W TO 18S147W NEARLY STATIONARY. 

.RIDGE FROM 13S157W TO 05S180E TO 02S160E NEARLY STATIONARY. 

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

.SEAS 12 TO 17 FT WITHIN 90 NM OF A LINE FROM 14S179E TO 19S175W.
SEAS 8 TO 12 FT ELSEWHERE S OF 15S BETWEEN 156W AND 169W...AND
ELSEWHERE WITHIN 210 NM OF A LINE FROM 11S172E TO 20S173W. SEAS
8 TO 9 FT S OF 20S BETWEEN 180E AND 173E.
.24 HOUR FORECAST SEAS 12 TO 22 FT S OF 16S BETWEEN 164W AND 172W. 
SEAS 8 TO 13 FT ELSEWHERE S OF A LINE FROM 25S161W TO 15S168W TO 
11S176E. SEAS 8 TO 12 FT ELSEWHERE S OF 19S BETWEEN 151W AND 160W.
.48 HOUR FORECAST SEAS 12 TO 15 FT S OF 21S BETWEEN 156W AND 162W. 
SEAS 8 TO 12 FT ELSEWHERE S OF A LINE FROM 25S152W TO 16S161W TO 
15S169W. SEAS 8 TO 11 FT WITHIN 150 NM OF A LINE FROM 18S169W TO 
14S180E. SEAS 8 TO 9 FT S OF 23S BETWEEN 144W AND 152W

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

.ISOLATED MODERATE TSTMS N OF 11S W OF 173E...AND WITHIN 120 NM OF
A LINE FROM 11S167W TO 18S157W.

$$

.FORECASTER HOUSTON. HONOLULU HI.

Additional Resources:

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