High Seas Forecast
Issued by NWS

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807
FZPN40 PHFO 250140 CCA
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
2300 UTC FRI NOV 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 NOV 24 2017.
24 HOUR FORECAST VALID 1800 UTC NOV 25 2017.
48 HOUR FORECAST VALID 1800 UTC NOV 26 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 27N144W 1012 MB MOVING SLOWLY E...WILL MOVE NE 40 KT. FRONT
FROM 30N140W TO 23N141W TO 18N145W MOVING E SLOWLY. TROUGH FROM
LOW TO 25N149W MOVING SE 10 KT. WINDS 25 TO 30 KT N OF 27N BETWEEN
144W AND 147W. WINDS 20 TO 25 KT ELSEWHERE N OF 25N BETWEEN 144W
AND 153W. ISOLATED MODERATE TSTMS WITHIN 120 NM NE QUADRANT OF
LOW. .24 HOUR FORECAST LOW MOVED FAR NE OF AREA. FRONT MOVED E OF
AREA. TROUGH DISSIPATED. ASSOCIATED WINDS DIMINISHED TO 20 KT OR
LESS.

.TROUGH FROM 30N169E TO 16N167E TO 10N169E TO 02N162E MOVING
W 10 KT. WINDS 20 TO 25 KT FROM 19N TO 24N BETWEEN 172E AND 168E.
SCATTERED MODERATE TSTMS FROM 02N TO 08N W OF 163E...AND FROM
03N TO 10N BETWEEN 168E AND 173E. ISOLATED MODERATE TSTMS FROM
15N TO 22N BETWEEN 173E AND 166E...AND FROM 09N TO 12N BETWEEN
161E AND 170E.
.24 HOUR FORECAST TROUGH FROM 30N167E TO 23N163E TO 15N161E
TO 07N165E TO 04N160E. NE WINDS 20 TO 25 KT FROM 17N TO 27N
W OF 163E.
.48 HOUR FORECAST TROUGH DISSIPATING W OF AREA. ASSOCIATED WINDS
DESCRIBED IN WIND SECTION BELOW.

.NE TO E WINDS 20 TO 30 KT FROM 10N TO 27N BETWEEN 150W AND
172E.
.24 HOUR FORECAST NE TO E WINDS 20 TO 30 KT FROM 10N TO 27N
BETWEEN 150W AND 165E.
.48 HOUR FORECAST NE TO E WINDS 20 TO 30 KT ENTIRE AREA FROM
10N TO 27N.

.TROUGH FROM 18N143W TO 12N144W TO 06N148W MOVING W SLOWLY.
ISOLATED MODERATE FROM 08N TO 13N BETWEEN TROUGH AND 140W.
.24 HOUR FORECAST TROUGH FROM 20N140W TO 15N146W TO 10N150W
TO 06N154W.
.48 HOUR FORECAST TROUGH FROM 18N148W TO 13N154W TO 08N157W.

.24 HOUR FORECAST NEW FRONT FROM 30N143W TO 27N153W TO 30N164W.
NE WINDS 20 TO 30 KT N OF FRONT.
.48 HOUR FORECAST FRONT DISSIPATED. ASSOCIATED WINDS DESCRIBED
IN WIND SECTION ABOVE.

.RIDGE FROM 30N162E TO 28N160E NEARLY STATIONARY AND DISSIPATING.

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

.SEAS 12 TO 13 FT FROM 14N TO 24N BETWEEN 150W AND 175E. SEAS 8 TO
12 FT ELSEWHERE N OF 08N E OF 180E...AND N OF 11N E OF 169E.
.24 HOUR FORECAST SEAS 11 TO 13 FT FROM 12N TO 23N BETWEEN 164W AND
170E. SEAS 8 TO 11 FT ENTIRE AREA ELSEWHERE N OF 04N W OF 148W...AND N
OF 25N E OF 148W...EXCEPT SEAS 8 FT OR LESS N OF 26N W OF 175E.
.48 HOUR FORECAST SEAS 11 TO 14 FT N OF 20N E OF 164W. SEAS 8 TO 11 FT
ENTIRE AREA ELSEWHERE N OF A LINE FROM 15N140W TO 12N155W TO 07N175W
TO 07N172E TO 10N160E...EXCEPT SEAS 8 FT OR LESS N OF 25N W OF 170W.

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

.ISOLATED MODERATE TSTMS FROM 09N TO 11N BETWEEN 153W AND 158W.

$$

.FORECASTER BIRCHARD. HONOLULU HI.



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