The High Seas Forecast for the South Pacific

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FZPS40 PHFO 191533
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN NOV 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 NOV 19 2017.
24 HOUR FORECAST VALID 1200 UTC NOV 20 2017.
48 HOUR FORECAST VALID 1200 UTC NOV 21 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S174W TO 22S176W TO 14S178E TO 12S170E...CONTINUING
AS A TROUGH TO 13S160E. FRONT MOVING E SLOWLY S OF 22S. TROUGH AND
REMAINDER OF FRONT NEARLY STATIONARY. ISOLATED MODERATE TO LOCALLY
STRONG TSTMS WITHIN 300 NM OF TROUGH...AND WITHIN 120 NM OF FRONT.
.24 HOUR FORECAST FRONT FROM 25S171W TO 19S177W...CONTINUING AS A
TROUGH TO 17S176E TO 16S165E TO 13S160E.
.48 HOUR FORECAST FRONT FROM 25S166W TO 20S174W...CONTINUING AS A
TROUGH TO 17S173E TO 14S160E. E TO SE WINDS 20 TO 25 KT WITHIN 210
NM S OF TROUGH W OF 170E.

.FRONT FROM 25S130W TO 20S137W NEARLY STATIONARY. ISOLATED MODERATE
TSTMS WITHIN 90 NM OF FRONT.
.24 HOUR FORECAST FRONT FROM 25S125W TO 23S126W TO 19S130W...
CONTINUING AS A TROUGH TO 15S135W TO 12S153W. N TO NE WINDS 20 TO
30 KT WITHIN 150 NM E OF FRONT S OF 22S.
.48 HOUR FORECAST FRONT FROM 25S123W TO 20S128W...CONTINUING AS A
TROUGH TO 15S138W TO 14S160W. WINDS DIMINISHED TO 20 KT OR LESS.

.TROUGH FROM 23S128W TO 16S135W TO 13S147W NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 150 NM N OF TROUGH W OF 142W...AND
WITHIN 120 NM OF TROUGH E OF 134W.
.24 HOUR FORECAST TROUGH MERGED WITH FRONT DESCRIBED ABOVE.

.RIDGE FROM 21S120W TO 12S130W MOVING WSW SLOWLY.

.RIDGE FROM 25S162W TO 15S176W MOVING S SLOWLY...AND GRADUALLY
ERODING FROM THE NW.

.RIDGE FROM 25S167E TO 23S174E TO 22S178W MOVING SE SLOWLY.

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

.SEAS 8 TO 9 FT S OF 22S BETWEEN 126W AND 148W...AND S OF 21S
BETWEEN 174E AND 162E.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 22S E OF 127W. SEAS 8 TO 9
FT S OF 23S BETWEEN 131W AND 139W.
.48 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER.

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

.ISOLATED MODERATE TSTMS WITHIN 120 NM OF A POINT 06S175W...AND
WITHIN 60 NM OF A POINT 06S174E.

$$

.FORECASTER HOUSTON. HONOLULU HI.


Additional Resources:

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