High Seas Forecast
Issued by NWS

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000
FZPN02 KWBC 211725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC MON AUG 21 2017

CCODE/2:31:12:11:00/AOW+POR+AOE/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

PACIFIC N OF 30N AND S OF 67N E OF A LINE FROM BERING STRAIT
TO 50N 160E

SYNOPSIS VALID 1200 UTC AUG 21.
24 HOUR FORECAST VALID 1200 UTC AUG 22.
48 HOUR FORECAST VALID 1200 UTC AUG 23.

.WARNINGS.

...GALE WARNING...
.LOW 58N149W NEARLY STATIONARY WILL MOVE SE AFTER 12 HOURS.
WITHIN 240 NM N SEMICIRCLE AND 540 NM W QUADRANT WINDS 25 TO 35
KT. SEAS TO 12 FT. ELSEWHERE WITHIN 240 NM E OF A FRONT FROM
53N140W TO 40N150W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 54N147W 1001 MB. WITHIN 360 NM S AND 540
NM W QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 16 FT. ELSEWHERE
WITHIN 540 NM E AND NE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10
FT.
.48 HOUR FORECAST LOW 55N139W 1005 MB. WITHIN 180 NM OF LOW
EXCEPT 480 NM S AND SW QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 14
FT.

...GALE WARNING...
.LOW 45N163E 1000 MB MOVING NE 20 KT. WITHIN 300 NM W AND
N...AND 720 NM E AND SE QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12
FT.
.24 HOUR FORECAST LOW 52N171E 997 MB. FROM 51N TO 54N BETWEEN
175W AND 179E WINDS 25 TO 35 KT. SEAS TO 12 FT. ELSEWHERE WITHIN
540 NM NE...780 NM SE...480 NM SW...AND 300 NM NW QUADRANTS
WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 55N177E 994 MB. WITHIN 660 NM S AND 360 NM
N SEMICIRCLES WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

.SYNOPSIS AND FORECAST.

.BOGOSLOF VOLCANO AT 53.92N 168.03W IS CURRENTLY IN A HEIGHTENED
STATE OF UNREST. MARINERS TRAVELING IN THE VICINITY OF BOGOSLOF
VOLCANO ARE URGED TO EXERCISE CAUTION. IF MARINERS ENCOUNTER ANY
VOLCANIC ASH...REPORT THE OBSERVATION TO THE OCEAN PREDICTION
CENTER BY CALLING 301-683-1520.

.WITHIN 240 NM W OF A LINE FROM 43N124W TO 33N128W WINDS 20 TO
30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.48 HOUR FORECAST FROM 38N TO 44N BETWEEN 163E AND 160E WINDS 20
TO 30 KT. SEAS TO 10 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 240 NM OF
52N137W...AND N OF 40N BETWEEN 180W AND 167E.
.24 HOUR FORECAST DENSE FOG WITHIN THE REGION BOUNDED BY A LINE
FROM 54N169E TO 40N179E TO 46N171W TO 58N177E TO 54N169E.
.48 HOUR FORECAST DENSE FOG WITHIN THE REGION BOUNDED BY A LINE
FROM 54N171E TO 57N177W TO 50N162W TO 42N176W TO 50N177W TO
54N171E.

.HIGH 38N139W 1027 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH 36N143W 1025 MB.
.48 HOUR FORECAST HIGH 34N149W 1026 MB.

.HIGH 41N171W 1029 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH 42N165W 1029 MB.
.48 HOUR FORECAST HIGH 41N161W 1030 MB.

.HIGH 53N172W 1027 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST HIGH 41N173W 1022 MB.

.FORECASTER COLLINS. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 1200 UTC MON AUG 21.
24 HOUR FORECAST VALID 1200 UTC TUE AUG 22.
48 HOUR FORECAST VALID 1200 UTC WED AUG 23.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE KENNETH NEAR 17.9N 130.9W 957 MB AT 1500 UTC AUG 21
MOVING WNW OR 300 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 110 KT
GUSTS 135 KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NW AND SE
QUADRANTS...90 NM NE QUADRANT AND 60 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 150 NM NE AND SW QUADRANTS...180 NM NW
QUADRANT AND 120 NM SE QUADRANT WITH SEAS TO 38 FT. ELSEWHERE
WITHIN 210 NM N AND 120 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS
8 TO 12 FT. REMAINDER OF AREA WITHIN 270 N AND 300 NM S
SEMICIRCLES WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE KENNETH NEAR 20.4N 133.1W. MAXIMUM
SUSTAINED WINDS 90 KT GUSTS 110 KT. LITTLE CHANGE IN RADIUS OF
TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER. ELSEWHERE
WITHIN 150 NM E AND 210 W SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8
TO 12 FT. REMAINDER OF AREA N OF 15N W OF 127W WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM KENNETH NEAR 24.1N 134.9W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. LITTLE CHANGE IN
RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
ELSEWHERE WITHIN 150 NM W AND 120 NM E SEMICIRCLES WINDS 20 TO
33 KT. REMAINDER OF AREA SEAS N OF 16N W OF 130W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL KENNETH NEAR 27.4N 136.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL KENNETH NEAR 29.6N 136.8W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW KENNETH NEAR 31.0N
138.0W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT.

FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE
AND INTENSITY.

.SYNOPSIS AND FORECAST.

.N OF 15N BETWEEN 94W AND 96W...INCLUDING GULF OF TEHUANTEPEC...
N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.06 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.06 HOUR FORECAST N OF 29N BETWEEN 127W AND 134W WINDS 20 KT OR
LESS. SEAS 8 FT IN N SWELL.
.24 HOUR FORECAST CONDITIONS MERGED.

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

CONVECTION VALID AT 1400 UTC MON AUG 21...

.HURRICANE KENNETH...NUMEROUS STRONG WITHIN 60 NM OF CENTER.
SCATTERED MODERATE ISOLATED STRONG ELSEWHERE FROM 14N TO 19N
BETWEEN 127W AND 132W.

.TROPICAL WAVE ALONG 93W/94W S OF 20N...
SCATTERED MODERATE ISOLATED STRONG WITHIN 300 NM N OF MONSOON
TROUGH BETWEEN 93W AND 100W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N86W TO LOW PRES NEAR 10N97W 1010 MB TO
10N112W TO LOW PRES NEAR 08N118W 1010 MB TO 08N125W, STARTING
AGAIN NEAR 13N133W BEYOND 12N140W. SCATTERED MODERATE ISOLATED
STRONG WITHIN 120 NM S OF AXIS BETWEEN 85W AND 92W, WITHIN 75 NM
N OF AXIS BETWEEN 88W AND 90W, WITHIN 300 NM N OF AXIS BETWEEN
93W AND 100W, WITHIN 60 NM ON EITHER SIDE OF AXIS BETWEEN 99W
AND 101W, WITHIN 60 NM S OF AXIS BETWEEN 115W AND 117W, WITHIN
90 NM S OF AXIS BETWEEN 118W AND 125W, WITHIN 120 NM N OF AXIS
BETWEEN 120W AND 125W, AND FROM 12N TO 14N BETWEEN 129W AND 132W.

.FORECASTER MT. NATIONAL HURRICANE CENTER.

NATIONAL WEATHER SERVICE HONOLULU HI
NORTH PACIFIC EQUATOR TO 30N BETWEEN 140W AND 160E

SYNOPSIS VALID 1200 UTC AUG 21 2017.
24 HOUR FORECAST VALID 1200 UTC AUG 22 2017.
48 HOUR FORECAST VALID 1200 UTC AUG 23 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 08N160E TO 07N165E TO 08N174E NEARLY STATIONARY.
ISOLATED MODERATE TSTMS FROM 02N TO 08N W OF 169E...AND S OF 14N
BETWEEN 169E AND 176W.
.24 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 30N172E TO 28N166E TO 27N160E NEARLY STATIONARY.

.WINDS 20 KT OR LESS ENTIRE FORECAST AREA.

.SEAS 8 FT OR LOWER ENTIRE FORECAST AREA.
.24 HOUR FORECAST SEAS 8 TO 9 FT E OF 141W BETWEEN 16N AND 24N.
SEAS 8 FT OR LOWER REST OF AREA.
.48 HOUR FORECAST SEAS 8 TO 10 FT FROM 21N TO 29N E OF 146W.
SEAS 8 FT OR LOWER REST OF AREA.

.ITCZ FROM 11N141W TO 09N159W TO 12N166W. ISOLATED MODERATE TO
STRONG TSTMS FROM 07N TO 11N BETWEEN 160W AND 166W...FROM 12N TO
15N BETWEEN 156W AND 166W...AND ELSEWHERE WITHIN 120 NM OF ITCZ.

.ISOLATED MODERATE TSTMS N OF 27N W OF 175E...FROM 14N TO 21N
BETWEEN 168E AND 179E...S OF LINE FROM 03N172W TO 00S164W...FROM
06N TO 13N BETWEEN 166W AND 176W...AND FROM 22N TO 28N BETWEEN
154W AND 162W.

$$

.HONOLULU HI.


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