High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 190338
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC SAT AUG 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

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

SYNOPSIS VALID 0000 UTC AUG 19.
24 HOUR FORECAST VALID 0000 UTC AUG 20.
48 HOUR FORECAST VALID 0000 UTC AUG 21.

.WARNINGS.

...GALE WARNING...
.FROM 40N TO 43N BETWEEN 124W AND 126W N WINDS 25 TO 35 KT. SEAS
8 TO 14 FT. ELSEWHERE FROM 34N TO 44N BETWEEN 123W AND 131W N
WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FROM 38N TO 43N BETWEEN 124W AND 127W N WINDS
25 TO 40 KT. SEAS 9 TO 16 FT. ELSEWHERE FROM 32N TO 45N BETWEEN
123W AND 131W N WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST FROM 38N TO 43N BETWEEN 124W AND 128W N WINDS
25 TO 35 KT. SEAS 9 TO 16 FT. ELSEWHERE FROM 31N TO 45N BETWEEN
123W AND 133W N WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.12 HOUR FORECAST FROM 35N TO 44N BETWEEN 168E AND 160E S TO SE
WINDS 20 TO 30 KT. SEAS TO 9 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 39N160E 1006 MB.
BETWEEN 120 NM AND 300 NM E AND NE QUADRANTS WINDS 25 TO 35 KT.
SEAS 8 TO 13 FT. ELSEWHERE FROM 34N TO 46N BETWEEN 170E AND 160E
WINDS TO 25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 44N163E 998 MB. WITHIN 600 NM E AND NE
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE FROM 33N
TO 49N BETWEEN 179E AND 160E WINDS 20 TO 30 KT. SEAS 8 TO 13 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.

.POST-TROPICAL CYCLONE BANYAN 49N174W 1000 MB MOVING NE 10 KT.
WITHIN 240 NM NE...600 NM E AND SE...360 NM S AND SW...AND 180
NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST POST-TROPICAL CYCLONE BANYAN 50N168W 1002 MB.
WITHIN 300 NM SE...AND 480 NM W AND SW QUADRANTS WINDS 20 TO 30
KT. SEAS TO 12 FT.
.48 HOUR FORECAST POST-TROPICAL CYCLONE BANYAN AND CONDITIONS
ABSORBED BY LOW 57N147W DESCRIBED BELOW.

.LOW 59N150W 1004 MB MOVING NE 10 KT. WITHIN 420 NM S AND SW
QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW 60N146W 1007 MB. WITHIN 360 NM S AND SE
QUADRANTS WINDS LESS THAN 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW MOVED INLAND OVER ALASKA WITH CONDITIONS
DESCRIBED WITH LOW 57N147W BELOW.

.LOW 45N152W 1016 MB MOVING NE 15 KT. WITHIN 240 NM SE QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW DISSIPATED. FROM 45N TO 51N BETWEEN 132W
AND 145W SW WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST CONDITIONS DESCRIBED WITH LOW 57N147W BELOW.

.LOW 42N175W 1010 MB MOVING NE 15 KT. WITHIN 300 NM S AND SE
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH POST-
TROPICAL CYCLONE BANYAN NEAR 50N168W ABOVE.

.24 HOUR FORECAST NEW LOW 52N156W 1003 MB. WITHIN 300 NM E AND
NE...480 NM SE...AND 540 NM S AND SW QUADRANTS WINDS 20 TO 30
KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 57N147W 995 MB. FRONT TO EXTEND FROM
40N157W TO 49N144W. OVER FORECAST WATERS FROM 49N TO 60N BETWEEN
135W AND 165W...AND WITHIN 240 NM E OF FRONT WINDS 20 TO 30 KT.
SEAS TO 12 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM OF
45N149W AND 55N173E...AND FROM 37N TO 52N BETWEEN 163W AND 174W.
.24 HOUR FORECAST DENSE FOG WITHIN 480 NM N OF A LINE FROM
46N134W TO 40N164W...AND WITHIN 120 NM OF 53N170W...53N180W...
54N172E...AND 39N162E.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 53N BETWEEN 132W AND
151W...WITHIN 120 NM OF 54N175E...AND WITHIN 180 NM OF 43N169E.

.HIGH 43N138W 1030 MB STATIONARY WILL MOVE S AFTER 24 HOURS.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH 39N139W 1028 MB.

.HIGH 34N160W 1023 MB MOVING NW 10 KT WILL TURN E AFTER 24 HOURS.
.24 HOUR FORECAST HIGH 36N163W 1022 MB.
.48 HOUR FORECAST HIGH 36N159W 1022 MB.

.HIGH 33N169W 1023 MB NEARLY STATIONARY THROUGH 48 HOURS.

.HIGH 61N170W 1015 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 43N169E 1022 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 43N177E 1023 MB.
.48 HOUR FORECAST HIGH 43N175W 1026 MB.

.48 HOUR FORECAST HIGH 53N177W 1024 MB.

.FORECASTER MILLS. 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 0000 UTC SAT AUG 19.
24 HOUR FORECAST VALID 0000 UTC SUN AUG 20.
48 HOUR FORECAST VALID 0000 UTC MON AUG 21.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM KENNETH NEAR 15.0N 119.1W 1005 MB AT 0300 UTC
AUG 19 MOVING W OR 280 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 35
KT GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NE
QUADRANT...20 NM SE QUADRANT...0 NM SW QUADRANT...AND 30 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 30 NM N SEMICIRCLE AND
15 NM S SEMICIRCLE WITH SEAS TO 12 FT. ELSEWHERE WITHIN 210 NM
NW AND 150 NM SE SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST TROPICAL STORM KENNETH NEAR 16.0N 124.1W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE
WINDS WITHIN 80 NM NE QUADRANT...50 NM SE QUADRANT...30 NM SW
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
60 NM N AND 30 NM S SEMICIRCLES OF LOW WITH SEAS TO 19 FT.
ELSEWHERE WITHIN 240 NM NW AND 150 NM SE SEMICIRCLES WINDS 20 TO
33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST HURRICANE KENNETH NEAR 17.7N 128.9W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NE QUADRANT...60 NM SE QUADRANT...50 NM SW
QUADRANT...AND 80 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
120 NM N AND 90 NM S SEMICIRCLES WITH SEAS TO 26 FT. ELSEWHERE
WITHIN 270 NM NW AND 180 NM SE SEMICIRCLES OF LOW WINDS 20 TO 33
KT. SEAS 8 TO 11 FT.
.72 HOUR FORECAST HURRICANE KENNETH NEAR 19.6N 131.8W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM KENNETH NEAR 22.3N 133.1W.
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST TROPICAL STORM KENNETH NEAR 25.2N 133.9W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 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.

.06 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO
14.5N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25
KT. SEAS TO 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST WITHIN 30 NM OF LINE FROM 16N95W TO
15N95W...INCLUDING THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25
KT. SEAS TO 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 0230 UTC SAT AUG 19...

.TROPICAL STORM KENNETH...SCATTERED STRONG WITHIN 150 NM SW
AND 60 NM NE SEMICIRCLES OF THE CENTER. SCATTERED MODERATE
ISOLATED STRONG IS ELSEWHERE FROM 10N TO 18N BETWEEN 115W AND
124W.

.TROPICAL WAVE AXIS NEAR 99W N OF 07N...SCATTERED MODERATE
ISOLATED STRONG FROM 06N TO 09N BETWEEN 92W AND 101W.

.TROPICAL WAVE AXIS NEAR 112W FROM 08N TO 22N...SCATTERED
MODERATE FROM 08N TO 10N BETWEEN 110W AND 112W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 10N91W TO 08N100W TO 10N110W WHERE
IT LOSES IDENTITY. IT RESUMES AT 13N121W AND EXTENDS TO 12N124W
TO 13N130W TO 12N136W TO 13N140W. SCATTERED MODERATE WITHIN 180
NM S OF THE MONSOON TROUGH W OF 130W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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