High Seas Forecast
Issued by NWS

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FZPS40 PHFO 241509
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1730 UTC SUN SEP 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 24 2017.
24 HOUR FORECAST VALID 1200 UTC SEP 25 2017.
48 HOUR FORECAST VALID 1200 UTC SEP 26 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S132W TO 20S144W TO 15S157W MOVING E SLOWLY S OF
21S AND NEARLY STATIONARY ELSEWHERE.
.24 HOUR FORECAST FRONT FROM 25S125W TO 21S140W TO 15S160W.
.48 HOUR FORECAST FRONT FROM 25S120W TO 20S140W TO 15S156W.

.TROUGH FROM 14S172W TO 17S170E TO 16S160E NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 220 NM S OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 15S180W TO 05S160E.
.48 HOUR FORECAST TROUGH FROM 10S180W TO 05S160E.

.RIDGE FROM 22S158W TO 23S170W TO 25S180W MOVING E 10 KT AND
ERODING FROM THE W.
MOVING
.RIDGE FROM 23S120W TO 20S141W MOVING NE SLOWLY.

.E TO SE WINDS 20 TO 25 KT FROM 12S TO 16S BETWEEN 175W AND 170E.
.24 HOUR FORECAST SE TO E WINDS 20 TO 25 KT FROM 11S TO 17S W OF
170W.
.48 HOUR FORECAST SE TO E WINDS 20 TO 25 KT FROM 09S TO 17S W OF
170W.

.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.

.SEAS 8 FT OR LESS OVER ENTIRE AREA.

$$

.FORECASTER MORRISON. HONOLULU HI.



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