High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 172252
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC TUE JAN 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC JAN 17 2017.
24 HOUR FORECAST VALID 1800 UTC JAN 18 2017.
48 HOUR FORECAST VALID 1800 UTC JAN 19 2017.

.WARNINGS.

...GALE WARNING...
.LOW 20S155W 1002 MB MOVING SE SLOWLY. TROUGH FROM 21S136W TO
17S145W TO LOW TO 16S162W TO 13S177W. WINDS 20 TO 30 KT WITHIN 300
NM N QUADRANT...180 E QUADRANT...AND 480 NM S QUADRANT OF LOW.
SCATTERED MODERATE TO STRONG TSTMS WITHIN 420 NM N OF TROUGH W OF
LOW. SCATTERED MODERATE TSTMS WITHIN 270 NM OF TROUGH E OF LOW.
.24 HOUR FORECAST LOW 21S154W 998 MB. TROUGH FROM 21S140W TO
24S147W TO LOW TO 15S157W TO 10S171W. WINDS 30 TO 45 KT WITHIN 270
NM E SEMICIRCLE OF LOW...AND WITH 270 NM E OF TROUGH BETWEEN LOW
AND 10S. WINDS 20 TO 30 KT ELSEWHERE S OF A LINE FROM 14S146W TO
09S151W TO 07S160W...AND FROM 07S TO 11S BETWEEN 160W AND 168W.
.48 HOUR FORECAST LOW 24S151W 999 MB. TROUGH FROM 25S138W TO
24S144W TO LOW TO 20S153W TO 15S162W. WINDS 30 TO 40 KT WITHIN 300
NM NE SEMICIRCLE OF LOW. WINDS 20 TO TO 30 KT ELSEWHERE S OF A
LINE FROM 19S143W TO 10S155W...AND FROM 10S TO 14S BETWEEN 155W
AND 159W.

.SYNOPSIS AND FORECAST.

.LOW 24S172W 1005 MB MOVING SE SLOWLY. TROUGH FROM LOW TO 15S176E
TO 11S160E. SCATTERED MODERATE TSTMS WITHIN 240 NM N OF TROUGH W
OF 178W.
.24 HOUR FORECAST LOW 25S171W 1004 MB. TROUGH FROM LOW TO 19S175W
TO 12S169E TO 14S160E.
.48 HOUR FORECAST LOW MOVED S OF AREA. TROUGH FROM 25S172W TO
20S171W TO 11S174E TO 10S166E TO 13S160E.

.LOW 21S129W 1011 MB NEARLY STATIONARY. TROUGH FROM 22S120W TO
LOW TO 17S130W TO 15S135W. ISOLATED MODERATE TSTMS WITHIN 180 NM
NE OF LOW AND TROUGH.
.24 HOUR FORECAST LOW 21S129W 1014 MB. TROUGH FROM 21S120W TO LOW
TO 18S132W.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 19S120W TO 21S132W.

.RIDGE FROM 17S120W TO 11S135W TO 01S177E NEARLY STATIONARY.

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

.SEAS 8 TO 11 FT S OF A LINE FROM 18S152W TO 15S156W TO 25S160W.
.24 HOUR FORECAST SEAS 12 TO 16 FT WITHIN 180 NM SW OF A LINE
FROM 19S149W TO 11S157W. SEAS 8 TO 12 FT ELSEWHERE S OF A LINE
FROM 14S149W TO 09S157W TO 09S163W.
.48 HOUR FORECAST SEAS 12 TO 18 FT WITHIN 300 NM SW OF A LINE
FROM 23S144W TO 15S151W. SEAS 8 TO 12 FT ELSEWHERE S OF A LINE
FROM 20S145W TO 10S153W TO 10S160W.

.OTHERWISE SEAS 8 FT OR LESS OVER REMAINDER OF AREA.

.ISOLATED MODERATE TSTMS FROM 03S TO 07S BETWEEN 170E AND 179W.

$$

.FORECASTER BRAVENDER. HONOLULU HI.


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