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National Weather Service Marine Forecast FZPN40 PHFO

FZPN40 PHFO 170403
HSFNP

HIGH SEAS FORECAST
NATIONAL WEATHER SERVICE HONOLULU HI
0500 UTC TUE OCT 17 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC OCT 17 2017.
24 HOUR FORECAST VALID 0000 UTC OCT 18 2017.
48 HOUR FORECAST VALID 0000 UTC OCT 19 2017.

.WARNINGS.

GALE WARNING

.NE TO E WINDS 25 TO 35 KT AROUND THE MAIN HAWAIIAN ISLANDS. FOR
DETAILS SEE COASTAL WATERS FORECAST ISSUED BY NWS HONOLULU
FORECAST OFFICE UNDER AWIPS HEADER HFOCWFHFO AND WMO HEADER FZHW50
PHFO.
.24 HOUR FORECAST LITTLE CHANGE
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 26N165E TO 17N160E MOVING NW 15 KT. E WINDS 20 TO 25
KT WITHIN 240 NM OF TROUGH N OF 21N. SCATTERED MODERATE TSTMS
WITHIN 180 NM OF TROUGH...AND 18N TO 21N BETWEEN 165E AND 176E.
.24 HOUR FORECAST TROUGH MOVED W OF AREA. NEW TROUGH FROM 21N166E
TO 23N160E. E WINDS 20 TO 25 KT FROM 22N TO 26N W OF 166E.
.48 HOUR FORECAST TROUGH FROM 24N165E TO 24N160E. E TO SE WINDS
20 TO 25 KT WITHIN 180 NM N OF TROUGH.

.TROUGH FROM 11N165E TO 04N161E MOVING NW SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 150 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 12N163E TO 06N160E.
.48 HOUR FORECAST TROUGH FROM 16N163E TO 07N160E.

IN ADDITION TO GALE AREA IN WARNING SECTION
NE TO E WINDS 20 TO
30 KT FROM 14N TO 20N BETWEEN 150W AND 156W...FROM 11N TO 27N
BETWEEN 156W AND 170W...AND N OF 25N BETWEEN 170W AND 175E.

24 HOUR FORECAST IN ADDITION TO GALE AREA IN WARNING SECTION
NE
TO E WINDS 20 TO 30 KT FROM 11N TO 27N BETWEEN 152W AND 175W...
AND N OF 20N BETWEEN 175W AND 177E.

48 HOUR FORECAST IN ADDITION TO GALE AREA IN WARNING SECTION
NE
TO E WINDS 20 TO 30 KT FROM 10N TO 27N BETWEEN 153W AND 179E...
AND N OF 22N BETWEEN 179E AND 175E.

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

.SEAS 8 TO 12 FT N OF A LINE FROM 15N147W TO 10N153W TO 10N164W
TO 25N178E. SEAS 8 TO 9 FT FROM 22N TO 25N W OF 170E.
.24 HOUR FORECAST SEAS 8 TO 12 FT N OF A LINE FROM 11N150W TO
08N166W TO 12N176W TO 28N175E. SEAS 8 TO 9 FT FROM 22N TO 25N W OF
166E.
.48 HOUR FORECAST SEAS 8 TO 12 FT N OF A LINE FROM 08N153W TO
08N173W TO 13N178E TO 26N171E. SEAS 8 TO 9 FT FROM 24N TO 26N W OF
166E.

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

.SCATTERED MODERATE TSTMS FROM 17N TO 23N BETWEEN 166W AND
172W...AND FROM 23N TO 27N BETWEEN 170W AND 176W. ISOLATED TSTMS
N OF 27N BETWEEN 142W AND 147W.

.ITCZ FROM 09N140W TO 08N147W TO 11N158W TO 09N179E TO 11N168E.
SCATTERED MODERATE TSTMS WITHIN 300 NM OF ITCZ W OF 178E. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF ITCZ ELSEWHERE.



.FORECASTER BRAVENDER. HONOLULU HI.