High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 231020
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 0600 UTC AUG 23 2017.
24 HOUR FORECAST VALID 0600 UTC AUG 24 2017.
48 HOUR FORECAST VALID 0600 UTC AUG 25 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 11N172E TO 08N160E MOVING NW 10 KT. SCATTERED
MODERATE TSTMS WITHIN 180 NM OF TROUGH...AND FROM 05N TO 08N
BETWEEN 180E AND 176E.
.24 HOUR FORECAST TROUGH FROM 11N170E TO 09N160E.
.48 HOUR FORECAST TROUGH FROM 14N162E TO 12N160E.

.TROUGH FROM 23N162E TO 17N162E MOVING W 15 KT. ISOLATED MODERATE
TSTMS WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH MOVED W OF AREA.

.RIDGE FROM 30N174E TO 27N160E MOVING N SLOWLY.

.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 14N TO 20N BETWEEN
150W AND 160W.

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

.SEAS 8 TO 10 FT N OF 19N E OF 146W.
.24 HOUR FORECAST SEAS 8 TO 9 FT FROM N OF 24N E OF 142W.
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM N OF 27N E OF 142W.

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

.MONSOON TROUGH FROM 12N140W TO 11N150W TO 10N160W. SCATTERED
MODERATE TSTMS WITHIN 180 NM OF TROUGH.

.ISOLATED MODERATE TSTMS FROM 24N TO 27N BETWEEN 162W TO 168W...
AND FROM 22N TO 25N BETWEEN 175E TO 172E.

$$

.FORECASTER MORRISON. HONOLULU HI.



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