High Seas Forecast
Issued by NWS

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000
FZPN02 KWBC 191725
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1745 UTC SAT AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19.
24 HOUR FORECAST VALID 1200 UTC AUG 20.
48 HOUR FORECAST VALID 1200 UTC AUG 21.

.WARNINGS.

...GALE WARNING...
.FROM 34N TO 46N BETWEEN 123W AND 132W WINDS 20 TO 30 KT. SEAS 8
TO 13 FT.
.24 HOUR FORECAST FROM 35N TO 44N BETWEEN 124W AND 129W WINDS 25
TO 40 KT. SEAS 9 TO 17 FT. ELSEWHERE FROM 32N TO 47N BETWEEN
123W AND 132W WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST FROM 30N TO 45N BETWEEN 123W AND 133W WINDS 20
TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.LOW W OF AREA NEAR 41N156E 1004 MB MOVING NE 10 KT. OVER
FORECAST WATERS WITHIN 360 NM NE AND 840 NM SE QUADRANTS WINDS
20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 42N162E 1002 MB. WITHIN 240 NM NE OF A
LINE FROM 43N162E TO 38N174E WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
ELSEWHERE WITHIN 480 NM NE AND 1080 NM SE QUADRANTS WINDS TO 25
KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW 44N164E 1001 MB. WITHIN 300 NM NW...660 NM
NE...1140 NM SE AND 540 NM SW QUADRANTS WINDS 20 TO 30 KT. SEAS
TO 12 FT.

...GALE WARNING...
.LOW 51N163W 1000 MB MOVING NE 15 KT. WITHIN 360 NM NE AND 600
NM SE QUADRANTS WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW 54N154W 997 MB. WITHIN 900 NM S
SEMICIRCLE...AND WITHIN 720 NM NW AND 360 NM NE QUADRANTS WINDS
20 TO 30 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 58N150W 991 MB. WITHIN 120 NM NW AND 540
NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT. ELSEWHERE
WITHIN 180 NM NE...960 NM SE AND 780 NM SW QUADRANTS WINDS TO 25
KT. SEAS TO 11 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.

.LOW 60N147W 1003 MB DRIFTING E. WITHIN 60 NM N AND 480 NM S
SEMICIRCLES WINDS 20 TO 30 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 49N150W 1014 MB MOVING NE 25 KT. WITHIN 420 NM SE QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.POST-TROPICAL CYCLONE BANYAN 50N172W 999 MB MOVING E 20 KT.
WITHIN 240 NM N AND 540 NM S SEMICIRCLES WINDS 20 TO 30 KT. SEAS
TO 11 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE BANYAN AND CONDITIONS
ABSORBED BY LOW 54N154W DESCRIBED IN WARNINGS SECTION ABOVE.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 41N TO 50N
BETWEEN 142W AND 155W AND FROM 37N TO 51N BETWEEN 156W AND 171W
AND FROM 51N TO 57N BETWEEN 167W AND 170E.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 54N BETWEEN 137W AND
155W AND FROM 52N TO 56N BETWEEN 174W AND 177E.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 49N BETWEEN 137W AND
145W AND FROM 49N TO 54N BETWEEN 133W AND 140W AND FROM 39N TO
48N BETWEEN 179E AND 165E AND FROM 51N TO 59N BETWEEN 174W AND
174E.

.HIGH 43N136W 1030 MB MOVING SW 10 KT.
.24 HOUR FORECAST HIGH 39N138W 1030 MB.
.48 HOUR FORECAST HIGH 37N139W 1026 MB.

.HIGH 35N166W 1022 MB MOVING SW 15 KT.
.24 HOUR FORECAST HIGH 33N174W 1024 MB.
.48 HOUR FORECAST HIGH 34N176W 1024 MB.

.HIGH 43N172E 1022 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 43N179W 1025 MB.
.48 HOUR FORECAST HIGH 41N171W 1025 MB.

.24 HOUR FORECAST HIGH 57N177W 1021 MB.
.48 HOUR FORECAST HIGH 51N169W 1027 MB.

.FORECASTER HOLLEY. 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 SAT AUG 19.
24 HOUR FORECAST VALID 1200 UTC SUN AUG 20.
48 HOUR FORECAST VALID 1200 UTC MON AUG 21.

.WARNINGS.

.TROPICAL STORM KENNETH NEAR 15.8NN 121.8W 1003 MB AT 1500 UTC
AUG 19 MOVING W NW OR 285 DEG AT 14 KT. MAXIMUM SUSTAINED WINDS
40 KT GUSTS 50 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM S
SEMICIRCLE...40 NM NE AND 30 NM NW QUADRANTS. SEAS 12 FT OR
GREATER WITHIN 90 NM N SEMICIRCLE...30 NM SE AND 15 NM SW
QUADRANTS WITH SEAS TO 15 FT. ELSEWHERE WITHIN 290 NM NW AND 120
NM SE SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST TROPICAL STORM KENNETH NEAR 17.1N 126.4W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE
WINDS WITHIN 80 NM NE...50 NM SE...40 NM SW AND 60 NM NW
QUADRANTS. SEAS 12 FT OR GREATER WITHIN 120 NM OF CENTER EXCEPT
90 NM E QUADRANT WINDS WITH SEAS TO 25 FT. ELSEWHERE WITHIN 240
NM N AND 180 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST HURRICANE KENNETH NEAR 18.9N 130.4W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NE...60 NM SE...50 NM SW AND 80 NM NW QUADRANTS.
SEAS 12 FT OR GREATER WITHIN 180 NM OF CENTER EXCEPT 90 NM SE
QUADRANT WITH SEAS TO 28 FT. ELSEWHERE WITHIN 180 NM E AND 330
NM W SEMICIRCLES OF CENTER WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.72 HOUR FORECAST TROPICAL STORM KENNETH NEAR 21.5N 132.3W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM KENNETH NEAR 24.3N 133.4W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST TROPICAL STORM KENNETH NEAR 27.0N 134.7W.
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 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.

.48 HOUR FORECAST GULF OF TEHUATEPEC N WINDS 20 TO 25 KT. SEAS
TO 8 FT.

.48 HOUR FORECAST N OF 29N BETWEEN 125W AND 135W WINDS 20 KT OR
LESS. SEAS TO 8 FT IN N SWELL.

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

CONVECTION VALID AT 1500 UTC SAT AUG 19...

.TROPICAL STORM KENNETH...NUMEROUS STRONG WITHIN 180 NM W
SEMICIRCLE. SCATTERED MODERATE ISOLATED STRONG ELSEWHERE WITHIN
420 NM W SEMICIRCLE OF CENTER.

.SCATTERED MODERATE ISOLATED STRONG WITHIN 75 NM OF 11.5N88W AND
13.5N100W AND 18N103.5W AND 23N109W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 11N90W THROUGH LOW PRES 08N111W
1010 MB TO 08N114W...RESUMES FROM 13N127W TO 12N140W. SCATTERED
MODERATE TO STRONG WITHIN 150 NM OF LINE FROM 05N78W TO 09N86W.
SCATTERED MODERATE ISOLATED STRONG WITHIN 120 NM OF LINES FROM
09.5N88.5W TO 08N106W AND FROM 07N118W TO 11N125W TO 13N132W TO
09N140W.

.FORECASTER NELSON. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 1200 UTC AUG 19 2017.
24 HOUR FORECAST VALID 1200 UTC AUG 20 2017.
48 HOUR FORECAST VALID 1200 UTC AUG 21 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW NEAR 13N150W 1009 MB MOVING W SLOWLY. ISOLATED MODERATE TO
STRONG TSTMS FROM 15N TO 08N BETWEEN 154W AND 145W.
.24 HOUR FORECAST LOW DISSIPATED. TROUGH FROM 12N155W TO
16N153W.
.48 HOUR FORECAST TROUGH FROM 12N157W TO 16N155W.

.TROUGH FROM 11N177W TO 15N176W TO 17N174W MOVING W 10 KT.
.24 HOUR FORECAST TROUGH DISSIPATED.

.RIDGE FROM 30N173E TO 28N160E.
.24 HOUR FORECAST RIDGE FROM 30N178E TO 27N167E.
.48 HOUR FORECAST RIDGE FROM 30N176E TO 26N163E.

.WINDS 20 KT OR LESS ENTIRE FORECAST AREA.

.SEAS 8 FT OR LOWER ENTIRE FORECAST AREA.

.MONSOON TROUGH FROM 10N140W TO 13N145W. SCATTERED MODERATE TO
STRONG TSTMS WITHIN 300 NM OF TROUGH AXIS...AND ALSO WITHIN 120
NM N OF TROUGH AXIS.

.ITCZ FROM 09N154W TO 10N159W TO 07N169W TO 09N177W TO 08N178E
TO 06N170E TO 08N163E. SCATTERED STRONG TSTMS WITHIN 150 NM S OF
AXIS OF CONVERGENCE BETWEEN 177W AND 170E. ISOLATED MODERATE TO
STRONG TSTMS ELSEWHERE WITHIN 210 NM EITHER SIDE AXIS OF
CONVERGENCE.

.OTHERWISE ISOLATED MODERATE TSTMS S OF 21N W OF 163E.

$$

.FORECASTER BEDAL. HONOLULU HI.



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