High Seas Forecast
Issued by NWS

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FZPS40 PHFO 122311
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 UTC TUE DEC 12 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 12 2017.
24 HOUR FORECAST VALID 1800 UTC DEC 13 2017.
48 HOUR FORECAST VALID 1800 UTC DEC 14 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S121W TO 20S130W TO 21S140W TO 25S150W MOVING E 10
KT E OF 130W AND NEARLY STATIONARY ELSEWHERE. NW TO N WINDS 20 TO
25 KT E OF FRONT S OF 22S. ISOLATED MODERATE TSTMS WITHIN 90 NM OF
FRONT.
.24 HOUR FORECAST FRONT FROM 24S120W TO 19S130W TO 20S140W TO
25S150W. NW WINDS 20 TO 25 KT S OF 24S E OF FRONT.
.48 HOUR FORECAST FRONT FROM 24S120W TO 20S130W TO 21S140W TO
20S149W. E WINDS 20 TO 25 KT WITHIN 120 NM S OF FRONT BETWEEN 130W
AND 140W.

.TROUGH FROM 22S155W TO 13S175E TO 12S170E TO 17S160E NEARLY
STATIONARY. ISOLATED MODERATE TSTMS WITHIN 450 NM N AND 90 NM S OF
TROUGH.
.24 HOUR FORECAST TROUGH FROM 20S160W TO 12S175W TO 12S175E TO
15S160E.
.48 HOUR FORECAST TROUGH FROM 23S155W TO 13S165W TO 10S180E TO
15S160E.

.TROUGH FROM 11S151W TO 13S144W MOVING SW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 60 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 12S153W TO 15S148W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 17S120W TO 14S130W TO 16S150W TO 09S170W TO 07S175E TO
04S160E MOVING N SLOWLY E OF 150W AND NEARLY STATIONARY ELSEWHERE.

.RIDGE FROM 25S180E TO 20S173W TO 20S163W NEARLY STATIONARY.

.SEAS 8 TO 10 FT S OF 22S E OF 153W. SEAS 8 TO 9 FT S OF 24S
BETWEEN 165W AND 173W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 18S E OF 127W.
.48 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LESS OVER FORECAST
WATERS.

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

$$

.FORECASTER WROE. HONOLULU HI.



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