High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 180329
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC FRI AUG 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 18 2017.
24 HOUR FORECAST VALID 0000 UTC AUG 19 2017.
48 HOUR FORECAST VALID 0000 UTC AUG 20 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 12N149W 1009 MB MOVING W SLOWLY. TROUGH 12N140W 13N144W
THROUGH LOW TO 07N163W. ISOLATED MODERATE TSTMS WITHIN 240 NM OF
LOW.
.24 HOUR FORECAST LOW 14N147W 1009 MB. TROUGH 14N140W THROUGH LOW TO
08N161W.
.48 HOUR FORECAST LOW 15N151W 1010 MB. TROUGH 15N149W THROUGH LOW TO
09N157W.

.TROUGH 14N168W 07N175W MOVING W 10 KT. NE WINDS 20 TO 25 KT FROM 15N
TO 13N BETWEEN 167W AND 172W. SEAS 8 FT. ISOLATED MODERATE TSTMS
WITHIN 120 NM OF LINE 07N164W 16N169W.
.24 HOUR FORECAST TROUGH 13N173W 07N175W. NE WINDS 20 TO 25 KT FROM
15N TO 13N BETWEEN 170W AND 175W. SEAS 8 FT.
.48 HOUR FORECAST TROUGH 13N177W 07N179W. WINDS DIMINISHED TO 20 KT
OR LESS. SEAS LESS THAN 8 FT.

.RIDGE 30N173E 27N160E MOVING NW SLOWLY.

.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.SCATTERED MODERATE TSTMS FROM 13N TO 10N W OF 163E.

$$
.HONOLULU FORECASTER.


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