High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 301530
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1700 UTC SUN APR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 30 2017.
24 HOUR FORECAST VALID 1200 UTC MAY 01 2017.
48 HOUR FORECAST VALID 1200 UTC MAY 02 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 25N162W 1010 MB MOVING SSW 10 KT. FRONTS FROM LOW TO 30N160W
AND FROM LOW TO 27N157W 22N155W 16N164W NEARLY STATIONARY. WINDS
20 TO 30 KT WITHIN 300 NM NW SEMICIRCLE OF LOW. SEE SEAS BELOW.
ISOLATED MODERATE TSTMS WITHIN 120 NM E OF FRONTS BETWEEN 20N AND
26N.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH 30N160W 20N161W 15N162W.
WINDS 20 TO 25 KT FROM 20N TO 26N BETWEEN 166W AND 176W.
.48 HOUR FORECAST TROUGH 30N161W 20N162W 18N164W. WINDS DECREASED
TO 20 KT OR LESS.

.FRONT NEAR 30N160E MOVING E 15 KT. WINDS 20 TO 25 KT N OF 28N E
OF 168E.
.24 HOUR FORECAST FRONT 30N170E 29N160E. WINDS DIMINISHED TO 20 KT
OR LESS.
.48 HOUR FORECAST FRONT MOVED N OF AREA.

.HIGH 29N177W 1024 MB MOVING SW 15 KT. RIDGE FROM HIGH TO
27N170E 25N160E.
.24 HOUR FORECAST HIGH 28N177W 1021 MB DISSIPATING.
.48 HOUR FORECAST HIGH DISSIPATED.

.NE TO E WINDS 20 TO 25 KT IN AREA 20N165W 15N170W 08N178E 08N160E
18N160E 22N180E 20N165W...AND N OF LINE 30N152W 12N140W.
.24 HOUR FORECAST WINDS 20 TO 25 KT E OF 156W N OF 09N...AND FROM
10N TO 23N W OF 169W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 14N TO 25N W OF 170W.

.WINDS 20 KT OR LESS REST OF AREA.

.SEAS 12 TO 14 FT N OF 27N BETWEEN 160W AND 163W. SEAS 8 TO 12 FT
ELSEWHERE N OF 24N BETWEEN 145W AND 168W. SEAS 8 TO 10 FT FROM 08N
TO 22N BETWEEN 165W AND 162E.
.24 HOUR FORECAST SEAS 8 TO 12 FT N OF 20N BETWEEN 162W AND 170W.
SEAS 8 TO 10 FT FROM 09N TO 18N W OF 178W.
.48 HOUR FORECAST SEAS DECREASED TO 8 FT OR LESS ENTIRE FORECAST
AREA.

.SEAS 8 FT OR LOWER REST OF AREA.

.ISOLATED MODERATE TSTMS S OF 10N W OF 172W...AND FROM 02N TO 05N
BETWEEN 164W AND 167W.

$$

.FORECASTER POWELL. HONOLULU HI.


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