High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 231520
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC WED AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 AUG 23 2017.
24 HOUR FORECAST VALID 1200 UTC AUG 24 2017.
48 HOUR FORECAST VALID 1200 UTC AUG 25 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S127W TO 22S128W TO 17S132W. NE TO E WINDS 20 TO 30 KT
S OF 22S E OF 124W. ISOLATED TSTMS S OF 17S BETWEEN 128W AND 130W.
.24 HOUR FORECAST FRONT FROM 25S126W TO 18S132W. WINDS DIMINISHED
TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT DISSIPATED.

.FRONT FROM 25S157W TO 21S167E THENCE TROUGH TO 09S160E. FRONT
MOVING E 15 KT...TROUGH NEARLY STATIONARY. ISOLATED MODERATE
TSTMS WITHIN 180 NM OF TROUGH.
.24 HOUR FORECAST FRONT FROM 25S148W TO 22S160W THENCE TROUGH TO
11S160E. E TO SE WINDS 20 TO 25 KT WITHIN 300 NM S OF TROUGH.
.48 HOUR FORECAST FRONT FROM 25S140W TO 20S152W THENCE TROUGH TO
18S180W TO 12S160E. E TO SE WINDS 20 TO 25 KT S OF 20S BETWEEN 165W
AND 175E.

.RIDGE FROM 25S146W TO 21S160W MOVING E 10 KT AND ERODING FROM
THE W.

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

.SEAS 8 TO 10 FT S OF 10S E OF 130W. SEAS 8 TO 9 FT FROM 12S TO 20S
BETWEEN 180E AND 173W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF A LINE FROM 14S120W TO
25S128W.
.48 HOUR FORECAST SEAS 8 TO 10 FT S OF A LINE FROM 25S150W TO 20S170W
TO 20S180E TO 25S175E.

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

.ISOLATED TSTMS FROM 02S TO 05S BETWEEN 174E AND 166E.

$$

.FORECASTER MORRISON. HONOLULU HI.



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