High Seas Forecast
Issued by NWS

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FZPN01 KWBC 200940
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SUN AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC AUG 20.
24 HOUR FORECAST VALID 0600 UTC AUG 21.
48 HOUR FORECAST VALID 0600 UTC AUG 22.

.WARNINGS.

...GALE WARNING...
.FROM 35N TO 45N BETWEEN 124W AND 129W AREA OF N WINDS 25 TO 35
KT. SEAS 9 TO 17 FT.
.24 HOUR FORECAST FROM 33N TO 44N BETWEEN 124W AND 131W AREA OF
N WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST FROM 30N TO 43N BETWEEN 124W AND 133W WINDS
LESS THAN 25 KT. SEAS TO 9 FT.

...GALE WARNING...
.LOW 52N160W 998 MB MOVING NE 25 KT. FROM 43N TO 55N BETWEEN
129W AND 166W...AND WITHIN 600 NM SW QUADRANT WINDS 20 TO 30 KT.
SEAS TO 11 FT.
.24 HOUR FORECAST LOW 58N149W 992 MB. WITHIN 120 NM NE OF A LINE
FROM 59N148W TO 57N138W...AND WITHIN 540 NM W QUADRANT WINDS 30
TO 40 KT. SEAS 8 TO 11 FT. ELSEWHERE OVER FORECAST WATERS N OF A
LINE FROM 52N131W TO 40N153W TO 52N165W WINDS 20 TO 30 KT. SEAS
TO 11 FT.
.48 HOUR FORECAST LOW 55N147W 1001 MB. WITHIN 480 NM SW
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE WITHIN
540 NM E AND 720 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS TO 10
FT.
...GALE WARNING...
.LOW 41N161E 1002 MB MOVING NE 10 KT. OVER FORECAST WATERS
WITHIN 480 NM E AND 300 NM N QUADRANTS WINDS 25 TO 35 KT. SEAS 8
TO 12 FT. ALSO WITHIN 480 NM S QUADRANT WINDS TO 25 KT. SEAS TO
8 FT.
.24 HOUR FORECAST LOW 44N163E 999 MB. WITHIN 240 NM NW
SEMICIRCLE...AND WITHIN 180 NM N AND NE OF A FRONT FROM LOW TO
46N166E TO 46N174E TO 43N180W WINDS 25 TO 35 KT. SEAS 8 TO 12
FT. ELSEWHERE WITHIN 720 NM SE QUADRANT WINDS TO 25 KT. SEAS TO
11 FT.
.48 HOUR FORECAST LOW 51N169E 997 MB. WITHIN 600 NM E AND
SE...480 NM S...240 NM W...AND 420 NM N QUADRANTS WINDS 20 TO 30
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.

.OVER FORECAST WATERS N OF 61N BETWEEN 166W AND 169W AREA OF N
WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST N OF 62N W OF 169W AREA OF SW WINDS TO 25 KT.
SEAS LESS THAN 8 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 49N TO 53N
BETWEEN 137W AND 141W...WITHIN 360 NM OF 48N150W...WITHIN 120 NM
OF 41N160W...AND FROM 52N TO 56N W OF 176W.
.24 HOUR FORECAST DENSE FOG WITHIN 180 NM SE OF A LINE FROM
54N135W TO 52N142W TO 45N149W...FROM 52N TO 57N BETWEEN 177W AND
171E...AND FROM 42N TO 46N BETWEEN 178E AND 166E.
.48 HOUR FORECAST DENSE FOG WITHIN 120 NM OF 52N133W...AND FROM
43N TO 58N BETWEEN 174W AND 170E.

.HIGH 41N138W 1029 MB MOVING SW 05 KT.
.24 HOUR FORECAST HIGH 39N139W 1028 MB.
.48 HOUR FORECAST HIGH 36N140W 1026 MB.

.HIGH 34N171W 1023 MB MOVING W 10 KT.
.24 HOUR FORECAST HIGH 34N176W 1024 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 43N180W 1024 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 42N173W 1027 MB.
.48 HOUR FORECAST HIGH 41N169W 1029 MB.

.HIGH 60N177W 1019 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH 53N172W 1026 MB.
.48 HOUR FORECAST HIGH 43N164W 1030 MB.

.FORECASTER KELLS. 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 0600 UTC SUN AUG 20.
24 HOUR FORECAST VALID 0600 UTC MON AUG 21.
48 HOUR FORECAST VALID 0600 UTC TUE AUG 22.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM KENNETH NEAR 16.0N 126.1W 996 MB AT 0900 UTC AUG
20 MOVING W OR 280 DEG AT 13 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 60 NM NW AND SE
QUADRANTS...70 NM NE QUADRANT AND 40 NM SW QUADRANT. SEAS 12 FT
OR GREATER WITHIN 105 NM N AND 45 NM S SEMICIRCLES WITH SEAS TO
21 FT. ELSEWHERE WITHIN 240 NM N AND 120 NM S SEMICIRCLES WINDS
20 TO 33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST HURRICANE KENNETH NEAR 17.2N 129.8W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 70 NM NW AND SE QUADRANTS...80 NM NE QUADRANT AND 50 NM
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 135 NM N AND 90 NM S
SEMICIRCLES WITH SEAS TO 30 FT. ELSEWHERE WITHIN 270 NM N AND
150 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST HURRICANE KENNETH NEAR 19.5N 132.6W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NE...70 NM SE...50 NM SW AND 80 NM NW QUADRANTS.
SEAS 12 FT OR GREATER WITHIN 150 NM N AND 105 NM S SEMICIRCLES
WITH SEAS TO 32 FT. ELSEWHERE WITHIN 240 NM NW AND 150 NM SE
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.72 HOUR FORECAST TROPICAL STORM KENNETH NEAR 22.7N 134.4W.
MAXIMUM SUSTAINED WINDS 55 KT GUSTS 65 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM KENNETH NEAR 25.9N 136.0W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
.120 HOUR FORECAST POST-TROPICAL REMNANT LOW KENNETH NEAR 27.5N
137.0W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 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.

.24 HOUR FORECAST N OF 29N BETWEEN 127W AND 131W WINDS 20 KT OR
LESS. SEAS TO 8 FT IN N SWELL.
.48 HOUR FORECAST N OF 27N BETWEEN 127W AND 135W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN N SWELL.

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

CONVECTION VALID AT 0900 UTC SUN AUG 20...

.TROPICAL STORM KENNETH...NUMEROUS MODERATE SCATTERED STRONG
WITHIN 90 NM OF CENTER. SCATTERED MODERATE ISOLATED STRONG
ELSEWHERE FROM 13N TO 18N BETWEEN 124W AND 128W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 11N92W TO 08N103W TO 08N116W
RESUMES FROM 13N128W TO 11N140W. NUMEROUS MODERATE TO STRONG
FROM 07N TO 14N BETWEEN 85W AND 90W. SCATTERED MODERATE ISOLATED
STRONG WITHIN 60 NM OF AXIS BETWEEN 93W AND 98W.

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.



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