High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 210325
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0530 UTC THU SEP 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC SEP 21 2017.
24 HOUR FORECAST VALID 0000 UTC SEP 22 2017.
48 HOUR FORECAST VALID 0000 UTC SEP 23 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S155W TO 20S159W TO 13S170W TO 11S177W THENCE TROUGH
TO 10S172E TO 07S160E. FRONT MOVING E 20 KT S OF 19S...AND NEARLY
STATIONARY ELSEWHERE. TROUGH NEARLY STATIONARY. ISOLATED MODERATE
TSTMS FROM 09S TO 13S W OF 175W...AND WITHIN 90 NM E OF FRONT S OF
19S.
.24 HOUR FORECAST FRONT FROM 25S146W TO 20S152W TO 13S176W THENCE
TROUGH TO 10S172E TO 05S160E. NW WINDS 20 TO 25 KT BETWEEN FRONT AND
143W S OF 23S.
.48 HOUR FORECAST FRONT FROM 25S140W TO 20S149W TO 15S156W TO
14S178W. TROUGH FROM 12S173E TO 05S160E. WINDS EASED TO 20 KT OR
LESS.

.FRONT FROM 25S125W TO 22S134W TO 24S143W TO 24S148W MOVING E 10 KT
E OF 129W...AND NEARLY STATIONARY ELSEWHERE. ISOLATED MODERATE TSTMS
WITHIN 60 NM OF FRONT.
.24 HOUR FORECAST WEAK FRONT FROM 24S120W TO 21S130W TO 25S137W.
.48 HOUR FORECAST DISSIPATING FRONT FROM 24S120W TO 25S124W.

.FRONT NEAR 25S160E MOVING NE 10 KT.
.24 HOUR FORECAST WEAK FRONT FROM 25S169E TO 21S160E.
.48 HOUR FORECAST FRONT DISSIPATED OVER FORECAST WATERS.

.HIGH 22S167E 1017 MB MOVING E 15 KT. RIDGE FROM 23S160E TO HIGH TO
20S176E TO 18S166W.
.24 HOUR FORECAST HIGH 23S174E 1017 MB.
.48 HOUR FORECAST HIGH 22S170W 1017 MB.

.RIDGE FROM 23S120W TO 20S128W MOVING N SLOWLY AND GRADUALLY ERODING
FROM THE W.

.RIDGE FROM 21S142W TO 15S159W NEARLY STATIONARY.

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

.SEAS 8 TO 11 FT S OF 23S BETWEEN 161W AND 173W.
.24 HOUR FORECAST SEAS 8 TO 10 FT S OF 23S BETWEEN 153W AND 164W.
.48 HOUR FORECAST SEAS SUBSIDED TO 8 FT OF LOWER.

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

.SCATTERED STRONG TSTMS FROM 05S TO 08S BETWEEN 167W AND 169W.

$$

.FORECASTER KINEL. HONOLULU HI.



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