High Seas Forecast
Issued by NWS

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FZPN40 PHFO 201534
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC AUG 20 2017.
24 HOUR FORECAST VALID 1200 UTC AUG 21 2017.
48 HOUR FORECAST VALID 1200 UTC AUG 22 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 07N167E 1009 MB MOVING W 10 KT. ISOLATED MODERATE TSTMS S
OF 10N W OF 173E.
.24 HOUR FORECAST LOW NEAR 09N162E 1007 MB.
.48 HOUR FORECAST LOW DISSIPATED.

.RIDGE FROM 30N176E TO 28N167E TO 26N160E.
.48 HOUR FORECAST RIDGE FROM 30N174E TO 27N163E.

.WINDS 20 KT OR LESS ENTIRE FORECAST AREA.

.SEAS 8 FT OR LOWER ENTIRE FORECAST AREA.

.MONSOON TROUGH FROM 11N140W TO 11N149W. ISOLATED MODERATE TSTMS
WITHIN 180 NM S OF TROUGH AXIS.

.ITCZ FROM 08N149W TO 11N162W TO 07N177W TO 09N173E. NUMEROUS
STRONG TSTMS WITHIN 180 NM EITHER SIDE OF AXIS OF CONVERGENCE
BETWEEN 177W AND 162W. ISOLATE MODERATE TO STRONG TSTMS ELSEWHERE
WITHIN 300 NM EITHER SIDE OF AXIS OF CONVERGENCE.

.OTHERWISE SCATTERED MODERATE TSTMS FROM 29N TO 21N BETWEEN 170E
AND 176E. ISOLATED MODERATE TSTMS FROM 22N TO 12N BETWEEN 173E AND
178W.

$$

.FORECASTER BEDAL. HONOLULU HI.



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