High Seas Forecast
Issued by NWS

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523
FZPS40 PHFO 160322
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC SAT DEC 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC DEC 16 2017.
24 HOUR FORECAST VALID 0000 UTC DEC 17 2017.
48 HOUR FORECAST VALID 0000 UTC DEC 18 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 15S178E 1006 MB NEARLY STATIONARY. TROUGH FROM 16S160E TO LOW
TO 13S170W TO 20S152W NEARLY STATIONARY. ISOLATED MODERATE TO
STRONG TSTMS WITHIN 420 NM N AND NE OF TROUGH...AND WITHIN 210 NM
S SEMICIRCLE OF LOW.
.24 HOUR FORECAST LOW 14S179E 1002 MB. TROUGH FROM 14S160E TO
14S170E TO LOW TO 12S170W TO 21S156W. E TO SE WINDS 20 TO 25 KT
AND SEAS 8 TO 9 FT FROM 19S TO 11S BETWEEN 177W TO 173E.
.48 HOUR FORECAST LOW 15S175W 1000 MB. TROUGH FROM 10S160E TO
12S170E TO 13S180E TO LOW TO 18S165W TO 22S157W. WINDS 20 TO 30 KT
AND SEAS 8 TO 11 FT WITHIN 180 NM OF TROUGH BETWEEN 165W AND 180E.

.WEAK FRONT NEAR 25S153W NEARLY STATIONARY.
.24 HOUR FORECAST WEAK FRONT FROM 25S150W TO 21S156W.
.48 HOUR FORECAST WEAK FRONT FROM 25S144W TO 22S152W.

.TROUGH FROM 24S120W TO 21S130W TO 21S140W NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 150 NM N OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 25S120W TO 21S130W TO 20S140W.
.48 HOUR FORECAST TROUGH FROM 25S120W TO 22S125W TO 21S135W.

.RIDGE FROM 20S120W TO 18S130W TO 16S140W NEARLY STATIONARY.

.RIDGE FROM 02S160E TO 05S175E TO 07S170W TO 11S152W NEARLY
STATIONARY.

.RIDGE FROM 25S178E TO 20S178W TO 16S168W NEARLY STATIONARY.

.SEAS 8 TO 9 FT FROM 12S TO 06S E OF 126W.
.24 HOUR FORECAST SEAS 8 TO 9 FT N OF 03S BETWEEN 127W AND 155W...
AND S OF 24S BETWEEN 162W AND 178W.
.48 HOUR FORECAST SEAS 8 TO 9 FT N OF 07S E OF 140W...AND S OF 20S
BETWEEN 160W AND 180E.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS 8 FT OR LESS.

$$

.FORECASTER WROE. HONOLULU HI.



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