High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 192240
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SAT AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19 2017.
24 HOUR FORECAST VALID 1800 UTC AUG 20 2017.
48 HOUR FORECAST VALID 1800 UTC AUG 21 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 14N151W 1010 MB MOVING W SLOWLY. ISOLATED MODERATE TSTMS
WITHIN 180 NM SE OF LOW...AND FROM 09N TO 11N BETWEEN 150W AND
154W.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 15N155W TO 11N157W.
.48 HOUR FORECAST TROUGH FROM 15N159W TO 11N159W.

.TROUGH FROM 18N178W TO 09N178W MOVING WNW 15 KT. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 16N177E TO 11N173E.
.48 HOUR FORECAST TROUGH FROM 18N172E TO 12N168E.

.RIDGE FROM 30N169E TO 28N160E NEARLY STATIONARY.

.WINDS 20 KT OR LESS ENTIRE FORECAST AREA.

.SEAS 8 FT OR LESS OVER ENTIRE FORECAST AREA.

.MONSOON TROUGH FROM 12N140W TO 13N144W. SCATTERED MODERATE TSTMS
FROM 06S TO 10S E OF 146W.

.ITCZ FROM 10N154W TO 08N175W...AND FROM 05N179E TO 08N167E TO
08N161E. ISOLATED MODERATE TSTMS WITHIN 240 NM OF ITCZ W OF
179E...WITHIN 180 NM S OF ITCZ BETWEEN 168W AND 175W...AND
ELSEWHERE WITHIN 90 NM OF ITCZ.

.SCATTERED TSTMS FROM 23N TO 28N BETWEEN 174E AND 177E...AND FROM
20N TO 23N BETWEEN 170E AND 173E.

$$

.FORECASTER BRAVENDER. HONOLULU HI.


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