High Seas Forecast
Issued by NWS

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000
FZPN40 PHFO 112203
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC MON DEC 11 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 DEC 11 2017.
24 HOUR FORECAST VALID 1800 UTC DEC 12 2017.
48 HOUR FORECAST VALID 1800 UTC DEC 13 2017.

.WARNINGS.

...GALE WARNING...
.FRONT FROM 30N154W TO 25N170W TO 23N175E TO 24N170E MOVING SE AND
S TO 10 KT. W AND NW WINDS INCREASING TO 25 TO 35 KT N OF FRONT E OF
175W. SW WINDS INCREASING TO 20 TO 25 KT WITHIN 260 NM E OF FRONT
N OF 27N.
.24 HOUR FORECAST FRONT FROM 30N150W TO 25N155W TO 20N162W 19N175W.
SW WINDS 30 TO 35 KT WITHIN 400 NM E OF FRONT N OF 27N. SW AND S
WINDS 20 TO 30 KT ELSEWHERE E OF FRONT N OF 25N. ALSO...NW WINDS 20
TO 30 KT BETWEEN FRONT AND 170W N OF 23N.
.48 HOUR FORECAST WEAKENING FRONT FROM 30N142W TO 22N150W TO 19N156W.
S WINDS 20 TO 25 KT E OF FRONT N OF 28N.


.SYNOPSIS AND FORECAST.

.CONTINUATION OF FRONT DESCRIBED ABOVE...WARM FRONT FROM 24N170E TO
30N163E MOVING NE 15 KT. S WINDS 20 TO 30 KT N OF 27N W OF 165E.
.24 HOUR FORECAST WARM FRONT MOVED N OF FORECAST WATERS. ANOTHER
FRONT EASE INTO AREA FROM W FROM 30N163E TO 29N160E. WINDS
DIMINISHED TO 20 KT OR LESS.
.48 HOUR FORECAST FRONT MOVED N OF FORECAST WATERS. SW WINDS 20 TO 25
KT N OF 28N W OF 172E.

.RIDGE FROM 30N140W TO 24N153W TO 22N160W MOVING S SLOWLY AND
GRADUALLY ERODING FROM THE W.

.E WINDS 20 TO 25 KT FROM 07N TO 20N W OF 175E.
.24 HOUR FORECAST E WINDS 20 TO 25 KT FROM 07N TO 22N W OF 170W.
.48 HOUR FORECAST E WINDS 20 TO 25 KT FROM 05N TO 23N BETWEEN
170W AND 163E.

.SEAS 8 TO 12 FT N OF 26N W OF 150W...AND ALSO N OF 10N E OF 155W.
SEAS 8 TO 10 FT BETWEEN 20N AND 07N W OF 175E. SEAS 8 TO 9 FT
BETWEEN 20N AND 10N FROM 155W TO 170W.
.24 HOUR FORECAST SEAS 18 TO 25 FT N OF A LINE FROM 30N154W TO
26N160W TO 25N173W TO 30N177W. SEAS 8 TO 12 FT ELSEWHERE N OF A
LINE FROM 30N146W TO 25N155W 21N174W TO 24N177E TO 30N176E. SEAS 8
TO 12 FT ELSEWHERE N OF A LINE 30N140W 24N148W TO 19N180W TO
20N170E. SEAS 8 TO 10 FT BETWEEN 20N AND 07N E OF 150W.
.48 HOUR FORECAST SEAS 12 TO 18 FT IN AREA BOUNDED BY 30N140W
20N150W 12N170W 17N177E 30N173W. SEAS 8 TO 12 FT ELSEWHERE IN AREA
BOUNDED BY 24N140W 15N150W 05N170W 08N160E 18N160E 21N173E TO 30N179W.
SEAS 8 TO 10 FT N OF A LINE FROM 30N165E TO 28N160E.

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

.ITCZ FROM 07N140W TO 06N160W TO 07N170W TO  04N170E. SCATTERED
MODERATE TO STRONG TSTMS WITHIN 250 NM N AND WITHIN 170 NM S OF
ITCZ W OF 180W. ELSEWHERE ISOLATED TSTMS WITHIN 220 NM N OF ITCZ.

$$

.FORECASTER LAU. HONOLULU HI.


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