High Seas Forecast
Issued by NWS

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FZPN40 PHFO 232305
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 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.

.TROUGH FROM 12N170E TO 10N160E MOVING NW SLOWLY. SCATTERED
MODERATE TO STRONG TSTMS W OF A LINE FROM 22N160E TO 14N167E TO
13N160E. ISOLATED MODERATE TSTMS WITHIN 360 NM S AND 150 NM N OF
TROUGH...AND FROM 05N TO 15N BETWEEN 180E AND 170E.
.24 HOUR FORECAST TROUGH FROM 14N168E TO 10N160E.
.48 HOUR FORECAST TROUGH MOVED W OF AREA.

.TROUGH FROM 13N168W TO 09N175W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS WITHIN 210 NM OF TROUGH.
.24 HOUR FORECAST TROUGH DISSIPATED.

.TROUGH FROM 30N174W TO 27N177W MOVING W SLOWLY.
.24 HOUR FORECAST TROUGH FROM 30N178W TO 28N179W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 30N170E TO 29N160E MOVING N SLOWLY.

.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 14N TO 20N BETWEEN
155W AND 160W.
.48 HOUR FORECAST E WINDS DIMINISHED TO 20 KT OR LESS.

.WINDS 20 KT OR LESS OVER REMAINDER OF AREA.

.SEAS 8 TO 10 FT N OF 20N E OF 146W.
.24 HOUR FORECAST SEAS 8 TO 10 FT N OF 24N E OF 143W.
.48 HOUR FORECAST SEAS 8 TO 9 FT N OF 27N E OF 142W.

.SEAS 8 FT OR LESS OVER REMAINDER OF AREA.

.MONSOON TROUGH FROM 08N140W TO 11N143W TO 12N157W. SCATTERED
MODERATE TSTMS WITHIN 150 NM OF TROUGH.

.SCATTERED MODERATE TO STRONG TSTMS FROM 22N TO 29N BETWEEN 161W
AND 169W...AND FROM 21N TO 25N BETWEEN 176E TO 170E. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF POINT 19N172W.

$$

.FORECASTER WROE. HONOLULU HI.



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