High Seas Forecast
Issued by NWS

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000
FZPS40 PHFO 211115
HSFSP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1130 UTC MON AUG 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 21 2017.
24 HOUR FORECAST VALID 0600 UTC AUG 22 2017.
48 HOUR FORECAST VALID 0600 UTC AUG 23 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.FRONT FROM 25S174W TO 17S179E THENCE TROUGH TO 10S171E TO 04S160E.
FRONT MOVING E 15 KT AND TROUGH NEARLY STATIONARY. WINDS 20 TO 25 KT
BETWEEN FRONT AND 170W S OF 23S. ALSO SE WINDS 20 TO 25 KT WITHIN
240 NM SW OF TROUGH N OF 14S. ISOLATED MODERATE TSTMS WITHIN 150 NM
OF TROUGH.
.24 HOUR FORECAST FRONT FROM 25S165W TO 17S176W THENCE TROUGH TO
04S160E. WINDS DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT FROM 25S160W TO 21S167W THENCE TROUGH TO
14S180W.

.DISSIPATING FRONT FROM 18S120W TO 16S124W NEARLY STATIONARY.
.24 HOUR FORECAST FRONT DISSIPATED.

.TROUGH FROM 03S152W TO 08S142W TO 16S135W NEARLY STATIONARY.
ISOLATED MODERATE TSTMS FROM 15S TO 19S BETWEEN 134W AND 143W.
.24 HOUR FORECAST TROUGH FROM 04S152W TO 17S132W TO 25S135W. WINDS
20 TO 25 KT S OF 22S E OF 130W.
.48 HOUR FORECAST TROUGH FROM 08S138W TO 22S133W TO 25S134W. WINDS
20 TO 30 KT S OF LINE FROM 22S120W TO 24S125W.

.RIDGE FROM 25S166W TO 19S176W MOVING E 10 KT.

.RIDGE FROM 25S161E TO 22S167E TO 21S176E MOVING SSE 10 KT.

.E TO SE WINDS 20 TO 25 KT FROM 12S TO 21S BETWEEN 141W AND 159W.
.24 HOUR FORECAST E TO SE WINDS 20 TO 25 KT FROM 12S TO 18S BETWEEN
143W AND 152W.
.48 HOUR FORECAST E TO SE WINDS 20 TO 25 KT FROM 14S TO 18S W OF
173E.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 8 TO 14 FT S OF 11S W OF 165E...S OF 21S BETWEEN 165E AND
168E...AND S OF LINE FROM 25S171W TO 22S173E TO 15S175E TO 21S168E.
SEAS 8 TO 10 FT S OF 22S E OF 137W. SEAS 8 TO 9 FT FROM 18S TO 12S
BETWEEN 143W AND 150W...FROM 13S TO 15S BETWEEN 150W AND 155W...FROM
15S TO 18S BETWEEN 155W AND 159W...AND FROM 07S TO 15S BETWEEN 162W
AND 170W.
.24 HOUR FORECAST SEAS 8 TO 11 FT S OF LINES FROM 15S120W TO 16S128W
TO 25S135W...AND FROM 22S170W TO 18S176W TO 18S179E TO 14S177E TO
15S173E TO 25S164E. SEAS 8 TO 9 FT W OF 165E BETWEEN 11S TO 22S.
.48 HOUR FORECAST SEAS 8 TO 13 FT S OF 10S E OF 129W. SEAS 8 TO 9 FT
FROM 13S TO 19S BETWEEN 173E AND 177E...AND FROM 14S TO 16S BETWEEN
160E AND 164E.

.SEAS 8 FT OR LOWER REMAINDER FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 04S TO 16S BETWEEN 167W AND
178E...WITHIN 60 NM OF LINE FROM 01S163W TO 02S161W...AND WITHIN 60
NM OF 06S173E.

$$

.HONOLULU HI.



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