High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 221034
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC FRI SEP 22 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 SEP 22 2017.
24 HOUR FORECAST VALID 0600 UTC SEP 23 2017.
48 HOUR FORECAST VALID 0600 UTC SEP 24 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 12N160W 1011 MB MOVING N SLOWLY. ISOLATED MODERATE TO LOCALLY
STRONG TSTMS WITHIN 270 NM SW QUADRANT...AND WITHIN 240 NM NE
QUADRANT OF LOW.
.24 HOUR FORECAST LOW 15N161W 1011 MB.
.48 HOUR FORECAST LOW 15N163W 1011 MB.

.FRONT FROM 30N170W TO 24N173E TO 22N162E NEARLY STATIONARY.
ISOLATED MODERATE TSTMS WITHIN 60 NM OF FRONT W OF 174E.
.24 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 30N174W TO 24N174E.
.48 HOUR FORECAST WEAK TROUGH FROM 29N177W TO 24N174E.

.TROUGH FROM 15N162E TO 13N160E MOVING W 10 KT. SCATTERED MODERATE
TO STRONG TSTMS FROM 04N TO 14N W OF 173E.
.24 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.HIGH 30N174E 1021 MB MOVING WSW 15 KT. RIDGE FROM HIGH TO 28N160E
NEARLY STATIONARY.
.24 HOUR FORECAST HIGH 29N166E 1018 MB.
.48 HOUR FORECAST HIGH 28N167E 1017 MB.

.RIDGE FROM 30N163W TO 26N174W NEARLY STATIONARY.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LOWER OVER ENTIRE FORECAST
AREA.

.MONSOON TROUGH FROM 12N140W TO 14N148W TO 14N158W TO LOW TO
07N167W. SEE TSTMS ASSOCIATED WITH LOW ABOVE. ISOLATED MODERATE
TSTMS ELSEWHERE WITHIN 180 NM OF MONSOON TROUGH.

$$

.FORECASTER HOUSTON. HONOLULU HI.


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