The High Seas Forecast for the South Pacific

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FZPS40 PHFO 201043
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC WED SEP 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 20 2017.
24 HOUR FORECAST VALID 0600 UTC SEP 21 2017.
48 HOUR FORECAST VALID 0600 UTC SEP 22 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S161W TO 20S163W TO 16S166W TO 12S174W MOVING E 20
KT...AND NEARLY STATIONARY ELSEWHERE. ISOLATED MODERATE TSTMS
WITHIN 60 NM OF A POINT 18S159W.
.24 HOUR FORECAST FRONT FROM 25S153W TO 20S157W TO 14S169W. NW TO
N WINDS 20 TO 25 KT WITHIN 180 NM E OF FRONT S OF 22S.
.48 HOUR FORECAST FRONT FROM 25S145W TO 20S151W TO 15S166W. WINDS
DIMINISHED TO 20 KT OR LESS.

.FRONT FROM 25S124W TO 22S138W TO 22S146W TO 19S152W NEARLY
STATIONARY. ISOLATED MODERATE TSTMS S OF FRONT...AND WITHIN 90 NM
N OF FRONT W OF 127W.
.24 HOUR FORECAST FRONT FROM 25S123W TO 22S133W TO 24S142W.
.48 HOUR FORECAST FRONT FROM 24S129W TO 23S130W.

.FRONT FAR SW OF FORECAST WATERS MOVING ENE 15 KT.
.24 HOUR FORECAST FRONT FROM 25S164E TO 23S160E.
.48 HOUR FORECAST FRONT FROM 25S173E TO 23S163E.

.TROUGH FROM 12S174W TO 08S175E TO 06S160E MOVING WNW SLOWLY.
SCATTERED MODERATE TSTMS WITHIN 270 NM S OF TROUGH W OF 175E.
ISOLATED MODERATE TSTMS WITHIN 90 NM S OF TROUGH E OF 175E.
.24 HOUR FORECAST TROUGH FROM 13S174W TO 10S175E TO 05S170E.
.48 HOUR FORECAST TROUGH FROM 14S173W TO 11S177E TO 09S169E.

.HIGH 24S160E 1017 MB MOVING E 25 KT. RIDGE FROM HIGH TO 24S171E TO
22S177W TO 17S166W NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 24S170E 1017 MB.
.48 HOUR FORECAST HIGH 22S176W 1017 MB.

.RIDGE FROM 22S120W TO 19S140W MOVING ENE SLOWLY.

.RIDGE FROM 07S164W TO 17S153W MOVING SSW SLOWLY.

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

.SEAS 8 TO 10 FT S OF A LINE FROM 25S169W TO 15S177E TO 15S171E.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF A LINE FROM 25S159W TO
19S170W.
.48 HOUR FORECAST SEAS 8 TO 9 FT S OF 22S BETWEEN 151W AND 161W.

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

$$

.FORECASTER HOUSTON. HONOLULU HI.


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