High Seas Forecast
Issued by NWS

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FZPN40 PHFO 170514 CCA
HSFNP

HIGH SEAS FORECAST...CORRECTED
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC WED JAN 17 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 JAN 17 2018.
24 HOUR FORECAST VALID 0000 UTC JAN 18 2018.
48 HOUR FORECAST VALID 0000 UTC JAN 19 2018.

.WARNINGS.

...STORM WARNING...
.LOW NEAR 26N172E 1013 MB MOVING ENE 30 KT. WARM FRONT FROM LOW TO
26N179E TO 24N175W. COLD FRONT FROM LOW TO 21N167E THENCE A
STATIONARY FRONT TO 19N160E. WINDS 30 TO 40 KT FROM 24N TO 26N
BETWEEN 165E AND 169E. WINDS E TO NE 20 TO 30 KT ELSEWHERE WITHIN
360 NM N OF FRONTAL BOUNDARY. ALSO WINDS SE 20 TO 25 KT WITHIN 120
NM S OF WARM FRONT. NUMEROUS MODERATE TO STRONG TSTMS WITHIN 240 NM
EITHER SIDE OF A LINE FROM 30N178E TO 22N168E.
.24 HOUR FORECAST LOW NEAR 28N179W 1011 MB. FRONTS FROM LOW TO
30N175W AND FROM LOW TO 23N175E TO 21N167E TO 19N160E. WINDS 35 TO
50 KT N OF LINE FROM 30N170W TO 26N180W TO 27N178E. WINDS NE TO E 20
TO 35 KT ELSEWHERE WITHIN 360 NM N OF FRONTAL BOUNDARY...AND ALSO N
OF 20N BETWEEN FRONT AND 155W.
.48 HOUR FORECAST LOW JUST N OF FORECAST AREA NEAR 31N172W 1006 MB.
FRONT FROM LOW TO 28N173W TO 23N178E. WINDS 30 TO 40 KT OVER
FORECAST WATERS N OF 27N BETWEEN 164W AND 172W. WINDS 20 TO 30 KT
ELSEWHERE OVER FORECAST WATERS N OF LINE FROM 25N140W TO 25N170W TO
29N178W.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N151W TO 27N156W TO 24N165W MOVING ENE 25 KT
THENCE A DISSIPATING STATIONARY FRONT TO 26N178E. WINDS NW TO SW
20 TO 25 KT N OF 28N BETWEEN 167W AND 142W.
.24 HOUR FORECAST FRONT FROM 28N140W TO 25N146W TO 24N154W TO
23N164W. ASSOCIATED WINDS EASED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT DISSIPATED.

.RIDGE FROM 27N140W TO 25N150W.
.24 HOUR FORECAST RIDGE FLATTENED OVER FORECAST AREA.

.OTHERWISE WINDS E TO NE 20 TO 30 KT WITHIN A POLYGON BOUNDED BY
20N179E 14N150W 08N150W 05N174W 09N170E 16N170E 20N179E.
.24 HOUR FORECAST WINDS E TO NE 20 TO 30 KT WITHIN A POLYGON BOUND
BY 20N175W 20N147W 04N145W 06N178E 10N163E 20N175W.
.48 HOUR FORECAST WINDS E TO NE 20 TO 30 KT WITHIN A POLYGON BOUND
BY 25N168W 25N140W 08N140W 08N178E 25N168W.

.WINDS 20 KT OR LESS REMAINDER FORECAST AREA.

.SEAS 12 TO 18 FT N OF A LINE FROM 30N154W TO 26N165W TO 26N175W...
AND ALSO WITHIN 90 NM EITHER SIDE OF A LINE FROM 26N169E TO 23N160E.
SEAS 8 TO 12 FT REMAINDER FORECAST AREA...EXCEPT SEAS 8 FT OR LOWER
SW OF A LINE FROM 15N160E TO 00N170W...AND ALSO WITHIN 180 NM SW OF
A LINE FROM 22N160W TO 21N157W TO 18N155W.
.24 HOUR FORECAST SEA 12 TO 18 FT NW OF A LINE FROM 29N140W TO
23N157W...AND ALSO WITHIN 120 NM EITHER SIDE OF A LINE FROM 30N175W
TO 27N174E. SEAS 8 TO 12 FT ELSEWHERE...EXCEPT SEAS 8 FT OR LOWER
S OF A LINE FROM 13N160E TO 03N178E TO 03N140W.
.48 HOUR FORECAST SEAS 12 TO 18 FT NE OF A LINE FROM 30N150W TO
23N140W...AND ALSO N OF 27N BETWEEN 178E AND 164W. SEAS 8 TO 12 FT
ELSEWHERE...EXCEPT SEAS 8 FT OR LOWER S OF A LINE FROM 09N160E TO
03N178E TO 03N140W.

.ITCZ FROM 06N140W TO 08N151W TO 07N162W TO 05N174W TO 07N176E TO
08N165E. ISOLATED MODERATE TO STRONG TSTMS WITHIN 180 NM OF
CONVERGENCE LINE.

$$

.FORECASTER BEDAL. HONOLULU HI.



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