High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 221034
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC FRI SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SEP 22 2017.
24 HOUR FORECAST VALID 0600 UTC SEP 23 2017.
48 HOUR FORECAST VALID 0600 UTC SEP 24 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S144W TO 18S153W TO 14S170W...CONTINUING AS A TROUGH
TO 10S176E TO 05S162E. FRONT MOVING E 20 KT S OF 18S. TROUGH AND
REST OF FRONT NEARLY STATIONARY. NW TO N WINDS 20 TO 25 KT WITHIN
150 NM E OF FRONT S OF 23S. ISOLATED MODERATE TSTMS WITHIN 90 NM NE
OF FRONT S OF 19S...WITHIN 120 NM S OF TROUGH S OF 174E.
.24 HOUR FORECAST FRONT FROM 25S141W TO 17S153W TO 14S164W. TROUGH
FROM 13S170W TO 11S172E TO 06S161E. WINDS DIMINISHED TO 20 KT OR
LESS.
.48 HOUR FORECAST WEAKENING FRONT FROM 25S137W TO 18S151W TO
14S160W. TROUGH FROM 15S170E TO 12S178E TO 06S167E. E TO SE WINDS
20 TO 30 KT WITHIN 210 NM S OF TROUGH BETWEEN 173W AND 173E.

.COLD FRONT FROM 25S173E TO 22S161E MOVING ENE 20 KT.
.24 HOUR FORECAST WEAKENING FRONT FROM 25S172W TO 23S175E TO
21S164E.
.48 HOUR FORECAST WEAK FRONT FROM 25S165W TO 23S170W TO 22S175E.

.FRONT FROM 24S120W TO 23S129W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT MOVED SE OF FORECAST AREA.

.TROUGH FROM 04S172E TO 09S178W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH FROM 04S169E TO 10S179E.
.48 HOUR FORECAST TROUGH MERGED WITH TROUGH DESCRIBED IN THE FIRST
SECTION ABOVE.

.RIDGE FROM 25S129W TO 20S135W TO 12S149W NEARLY STATIONARY.

.RIDGE FROM 24S179W TO 24S168W TO 19S154W NEARLY STATIONARY.

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

.SEAS 8 TO 9 FT S OF 22S BETWEEN 151W AND 161W.
.24 HOUR FORECAST SEAS 8 TO 9 FT S OF 23S BETWEEN 178W AND 174E.
.48 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER.

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

$$

.FORECASTER HOUSTON. HONOLULU HI.



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