High Seas Forecast
Issued by NWS

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FZPS40 PHFO 191535
HSFSP

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 17S168W 1011 MB MOVING SE SLOWLY. TROUGH FROM LOW TO 11S174W TO
08S177E TO 05S168E TO 02S162E MOVING S SLOWLY W OF 170E AND NEARLY
STATIONARY ELSEWHERE. ISOLATED MODERATE TSTMS WITHIN 300 NM S OF
TROUGH...AND ELSEWHERE FROM 05S TO 08S BETWEEN 172E AND 179E.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 09S180E TO 05S161E.
.48 HOUR FORECAST TROUGH DISSIPATED.

.FRONT FROM 25S169W TO 24S170W TO 20S175W MOVING E 20 KT.
.24 HOUR FORECAST FRONT FROM 25S160W TO 20S162W TO 13S169W.
.48 HOUR FORECAST FRONT FROM 25S151W TO 15S161W.

.FRONT FROM 25S127W TO 22S142W THENCE TROUGH TO 20S148W TO 18S152W.
FRONT AND TROUGH NEARLY STATIONARY.
.24 HOUR FORECAST FRONT WEAKENED TO A TROUGH FROM 25S127W TO 21S136W
TO 21S142W TO 23S146W.
.48 HOUR FORECAST TROUGH BECOME A FRONT FROM 25S122W TO 21S130W.

.RIDGE FROM 23S120W TO 23S125W NEARLY STATIONARY.

.RIDGE FROM 25S160W TO 22S166W MOVING E 15 KT AND WEAKENING.

.RIDGE FROM 25S167E TO 16S173W MOVING SE SLOWLY.

.WINDS 20 KT OR LESS OVER ENTIRE FORECAST AREA.

.SEAS 8 TO 11 FT S OF A LINE FROM 25S175W TO 20S180W TO 17S175E TO
17S173E TO 23S168E TO 23S166E.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF A LINE FROM 25S166W TO
19S176W TO 19S178E TO 14S175E TO 15S173E.
.48 HOUR FORECAST SEAS 8 TO 10 FT S OF A LINE FROM 25S157W TO
20S165W TO 20S167W.

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

$$

.HONOLULU HI.



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