High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 201029
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
1100 UTC MON FEB 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 20 2017.
24 HOUR FORECAST VALID 0600 UTC FEB 21 2017.
48 HOUR FORECAST VALID 0600 UTC FEB 22 2017.

.WARNINGS.

...GALE WARNING...
.NE TO E WINDS 25 TO 35 KT AROUND THE MAIN HAWAIIAN ISLANDS. FOR
DETAILS...SEE THE COASTAL WATERS FORECAST ISSUED BY NWS HONOLULU
UNDER AWIPS HEADER CWFHFO AND WMO HEADER FZHW50 PHFO.
.24 HOUR FORECAST WINDS DIMINISHED AND MERGED WITH CONDITIONS
DESCRIBED BELOW.

...GALE WARNING...
.FRONT FROM 25N140W TO 20N150W TO 19N168W. FRONT MOVING E 15 KT E
OF 150W...AND NEARLY STATIONARY ELSEWHERE. ALSO...TROUGH FROM
30N144W TO 27N151W MOVING E 20 KT. W TO NW WINDS 25 TO 35 KT N OF
26N E OF 150W. WINDS 20 TO 30 KT ELSEWHERE N OF A LINE FROM
25N140W TO 24N150W TO 30N154W. WINDS 20 TO 25 KT ELSEWHERE WITHIN
270 NM N OF FRONT W OF 154W.
.24 HOUR FORECAST DISSIPATING FRONT FROM 21N140W TO 18N152W.
TROUGH MOVED E OF AREA. WINDS 20 TO 25 KT WITHIN 180 NM N OF
FRONT...AND FROM FRONT TO 11N.
.48 HOUR FORECAST FRONT DISSIPATED. WINDS MERGED WITH CONDITIONS
DESCRIBED BELOW.

...GALE WARNING...
.FRONT FROM 30N174E TO 22N165E TO 19N160E. FRONT MOVING E 25 KT. S
TO SW WINDS 25 TO 35 KT WITHIN 450 NM E OF FRONT N OF 27N. NW WINDS
20 TO 25 KT WITHIN 180 NM W OF FRONT N OF 28N. ISOLATED MODERATE
TSTMS WITHIN 150 NM E OF FRONT N OF 27N.
.24 HOUR FORECAST FRONT FROM 30N175W TO 25N180E. WINDS DIMINISHED
TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT FROM 30N156W TO 29N165W.

...GALE WARNING...
.24 HOUR FORECAST NEW COLD FRONT W OF AREA. S TO SW WINDS 25 TO 35
KT N OF A LINE FROM 30N167E TO 28N164E TO 28N160E.
.48 HOUR FORECAST COLD FRONT FROM 30N172E TO 21N160E. WINDS 25 TO
35 KT WITHIN 300 NM E OF COLD FRONT N OF 26N...AND WITHIN 480 NM W
OF COLD FRONT N OF 29N. WINDS 20 TO 30 KT ELSEWHERE N OF A LINE
FROM 30N174W TO 28N180E TO 24N169E TO 23N160E.

.SYNOPSIS AND FORECAST.

.NE TO E WINDS 20 TO 25 KT FROM 06N TO 19N BETWEEN 150W AND
178E...AND FROM 19N TO 22N BETWEEN 168W AND 178W.
.24 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 08N TO 20N
BETWEEN 152W AND 170W.
.48 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 09N TO 25N E OF
150W...AND FROM 06N TO 24N BETWEEN 150W AND 180E.

.RIDGE FROM 30N164W TO 23N148W MOVING E 20 KT.

.RIDGE FROM 30N166W TO 25N178W TO 22N170E MOVING E 20 KT.

.RIDGE FROM 28N160E TO 26N167E MOVING NE 35 KT.

.OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST AREA.

.SEAS 18 TO 23 FT N OF A LINE FROM 30N141W TO 27N149W TO 30N153W.
SEAS 12 TO 18 FT ELSEWHERE N OF A LINE FROM 27N140W TO 23N154W TO
26N160W. SEAS 12 TO 14 FT N OF 29N BETWEEN 171E AND 162E. SEAS 8
TO 12 FT FROM 06N TO 20N BETWEEN 158W AND 165E...ELSEWHERE N OF A
LINE FROM 24N140W TO 19N154W TO 20N160W...AND ELSEWHERE N OF A
LINE FROM 30N179E TO 27N177E TO 24N160E. SEAS 8 TO 11 FT N OF 20N
BETWEEN 160W AND 169W. SEAS 8 TO 10 FT FROM 20N TO 24N BETWEEN
160W AND 175E.
.24 HOUR FORECAST SEAS 12 TO 14 FT N OF 20N E OF 145W. SEAS 8 TO
12 FT ELSEWHERE N OF A LINE FROM 18N140W TO 08N154W. SEAS 8 TO 11
FT FROM 05N TO 22N BETWEEN 154W AND 170E...AND N OF 22N W OF 173E.
.48 HOUR FORECAST SEAS 12 TO 23 FT N OF A LINE FROM 30N169E TO
26N160E. SEAS 12 TO 18 FT ELSEWHERE N OF A LINE FROM 30N172E TO
24N160E. SEAS 8 TO 12 FT ELSEWHERE N OF 23N W OF 172E. SEAS 8 TO
11 FT N OF 03N BETWEEN 160W AND 172E. SEAS 8 TO 10 FT FROM 06N TO
24N E OF 160W.

.OTHERWISE...SEAS 8 FT OR LESS OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS S OF 09N W OF 174E.

.ITCZ FROM 01N140W TO 01N146W TO 06N157W TO 06N171W. ISOLATED
TSTMS WITHIN 60 NM OF ITCZ.

$$

.FORECASTER HOUSTON. HONOLULU HI.



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