High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 232305
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2330 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC AUG 23 2017.
24 HOUR FORECAST VALID 1800 UTC AUG 24 2017.
48 HOUR FORECAST VALID 1800 UTC AUG 25 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S127W TO 20S128W TO 16S132W MOVING E SLOWLY. NE
WINDS 20 TO 25 KT S OF 23S E OF 124W. ISOLATED MODERATE TSTMS
WITHIN 60 NM OF FRONT.
.24 HOUR FORECAST WEAK FRONT FROM 25S124W TO 21S128W. WINDS
DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT DISSIPATED.

.FRONT FROM 25S155W TO 23S161W TO 152172E THENCE TROUGH TO
10S160E. FRONT MOVING E 15 KT E OF 161W AND NEARLY STATIONARY W
OF 161W. TROUGH NEARLY STATIONARY. ISOLATED MODERATE TSTMS WITHIN
90 NM OF FRONT W OF 161W...AND WITHIN 600 NM N OF TROUGH.
.24 HOUR FORECAST FRONT FROM 25S147W TO 20S158W TO 20S170W TO
18S176E TO 14S167E. E TO SE WINDS 20 TO 25 KT AND SEAS 8 TO 9 FT
S OF FRONT BETWEEN 170W AND 176E.
.48 HOUR FORECAST FRONT FROM 25S140W TO 20S155W TO 18S163W TO
19S175E. E TO SE WINDS 20 TO 30 KT AND SEAS 8 TO 11 FT S OF FRONT
BETWEEN 155W AND 175E.

.TROUGH FROM 13S171W TO 17S170W MOVING SW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 90 NM E OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

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

.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.

.SEAS 10 TO 12 FT S OF A LINE FROM 25S126W TO 20S120W. SEAS 8 TO
10 FT ELSEWHERE S OF 06S E OF 136W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF A LINE FROM 04S120W TO
25S130W.
.48 HOUR FORECAST SEAS 8 TO 11 FT S OF A LINE FROM 25S145W TO
20S155W. SEAS 8 TO 9 FT FROM 05S TO 20S E OF 126W.

.SEAS 8 FT OR LESS OVER REMAINDER OF AREA.

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

$$

.FORECASTER WROE. HONOLULU HI.



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