High Seas Forecast
Issued by NWS

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335
FZPN40 PHFO 292139
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC SAT APR 29 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 APR 29 2017.
24 HOUR FORECAST VALID 1800 UTC APR 30 2017.
48 HOUR FORECAST VALID 1800 UTC MAY 01 2017.

.WARNINGS.

...GALE WARNING...
.LOW NEAR 29N157W 1009 MB MOVING SSW 10 KT. FRONT FROM LOW TO
25N155W 20N157W 15N167W MOVING SE SLOWLY. WINDS 20 TO 35 KT
WITHIN 300 NM N SEMICIRCLE OF LOW. WINDS 20 TO 25 KT ELSEWHERE
WITHIN 180 NM OF LINE 22N143W 30N150W. SCATTERED MODERATE TSTMS
WITHIN 120 NM E OF FRONT N OF 20N.
.24 HOUR FORECAST LOW 23N162W 1010 MB. TROUGH 30N155W TO LOW TO
17N150W. WINDS 20 TO 30 KT WITHIN 300 NM W SEMICIRCLE OF LOW.
.48 HOUR FORECAST LOW DISSIPATED. TROUGH 30N160W 20N162W 18N164W.

.SYNOPSIS AND FORECAST.

.FRONT JUST W OF AREA MOVING E 15 KT. WINDS 20 TO 25 KT N OF 28N E
OF 163E.
.24 HOUR FORECAST FRONT NEAR 30N160E. WINDS 20 TO 25 KT N OF 28N
W OF 165E.
.48 HOUR FORECAST FRONT 30N165E 28N160E. WINDS DIMINISHED TO 20
KT OR LESS.

.HIGH 30N177W 1026 MB NEARLY STATIONARY. RIDGE FROM HIGH TO
26N170E 24N160E.
.24 HOUR FORECAST HIGH 29N177E 1022 MB DISSIPATING.
.48 HOUR FORECAST HIGH DISSIPATED.

.WINDS 20 TO 25 KT IN AREA BOUNDED BY 26N160W 20N160W 04N175W
08N160E 20N160E 20N175E 26N170W 26N160W.
.24 HOUR FORECAST WINDS 20 TO 25 KT FROM 08N TO 22N BETWEEN 165E
AND 170W.
.48 HOUR FORECAST WINDS 20 TO 25 KT FROM 12N TO 20N W OF 178W.

.WINDS 20 KT OR LESS REST OF AREA.

.SEAS 12 TO 15 FT N OF 27N BETWEEN 158W AND 163W. SEAS 8 TO 12 FT
ELSEWHERE N OF 24N BETWEEN 145W AND 167W. SEAS 8 TO 10 FT FROM 08N
TO 22N BETWEEN 168W AND 175E.
.24 HOUR FORECAST SEAS 8 TO 12 FT N OF 20N BETWEEN 160W AND 170W.
SEAS 8 TO 10 FT FROM 09N TO 20N W OF 178W.
.48 HOUR FORECAST SEAS 8 TO 9 FT FROM 20N TO 26N BETWEEN 165W AND
170W AND FROM 10N TO 15N W OF 175E.

.SEAS 8 FT OR LOWER REST OF AREA.

.SCATTERED MODERATE TO STRONG TSTMS S OF 10N W OF 170E AND S OF
04N BETWEEN 177E AND 172W.

$$

.FORECASTER BURKE. HONOLULU HI.



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