High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 230945
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC WED AUG 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0600 UTC AUG 23.
24 HOUR FORECAST VALID 0600 UTC AUG 24.
48 HOUR FORECAST VALID 0600 UTC AUG 25.

.WARNINGS.

...GALE WARNING...
.LOW 54N174E 995 MB MOVING NE 20 KT. OVER FORECAST WATERS WITHIN
240 NM NW SEMICIRCLE AND 420 NM SE QUADRANT WINDS 25 TO 35 KT.
SEAS 8 TO 12 FT. ALSO FROM 45N TO 59N BETWEEN 167E AND 164W
WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW ABSORBED BY NEW LOW 58N163W 993 MB. WITHIN
840 NM SE...660 NM SW AND 420 NM NW QUADRANTS WINDS 20 TO 30 KT.
SEAS TO 12 FT...HIGHEST SE AND SW QUADRANTS.
.48 HOUR FORECAST LOW 58N158W 991 MB. WITHIN 540 NM SW
SEMICIRCLE WINDS 20 TO 30 KT. SEAS TO 12 FT.

...GALE WARNING...
.48 HOUR FORECAST FRONT TO EXTEND FROM 60N149W TO 58N140W TO
53N133W. OVER FORECAST WATERS WITHIN 90 NM N AND NE OF THE FRONT
WINDS 25 TO 35 KT. SEAS TO 12 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 55N140W 1000 MB MOVING SE 10 KT. WITHIN 540 NM SW...360 NM
SE AND 180 NM NE QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW 54N134W 1009 MB. WITHIN 360 NM SW QUADRANT
 WINDS TO 25 KT. SEAS TO 10 FT.
.36 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.24 HOUR FORECAST FROM 37N TO 41N BETWEEN 123W AND 126W AREA OF
N TO NW WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST FROM 32N TO 43N BETWEEN 120W AND 127W N TO NW
WINDS 20 TO 30 KT. SEAS TO 11 FT.

.24 HOUR FORECAST LOW 47N161E 1003 MB. WITHIN 420 NM E AND SE
QUADRANT WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 50N166E 1003 MB. FROM 50N TO 54N W OF 173E
AND WITHIN 540 NM S AND SE QUADRANTS WINDS TO 25 KT. SEAS TO 8
FT.

.48 HOUR FORECAST POST-TROPICAL CYCLONE KENNETH S OF AREA. FROM
30N TO 32N BETWEEN 132W AND 140W WINDS TO 25 KT. SEAS TO 10 FT.

.48 HOUR FORECAST FROM 43N TO 47N BETWEEN 150W AND 167W AREA OF
W TO SW WINDS TO 25 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN THE REGION
BOUNDED BY A LINE FROM 56N172W TO 43N176W TO 48N159W TO 56N172W.
.24 HOUR FORECAST DENSE FOG WITHIN 180 NM SE OF A LINE FROM
52N149W TO 46N157W...FROM 43N TO 48N BETWEEN 161E AND 169E...AND
WITHIN 120 NM OF 44N174W AND 42N178E.
.48 HOUR FORECAST DENSE FOG WITHIN 120 NM S OF A LINE FROM
44N175W TO 46N163W...AND WITHIN THE REGION BOUNDED BY A LINE
FROM 50N167E TO 44N160E TO 38N160E TO 48N180W TO 50N167E.

.HIGH 34N145W 1026 MB MOVING W 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.HIGH 41N158W 1030 MB MOVING SE 05 KT.
.24 HOUR FORECAST HIGH 40N157W 1030 MB.
.48 HOUR FORECAST HIGH 39N155W 1028 MB.

.48 HOUR FORECAST HIGH 56N180W 1019 MB.

.FORECASTER REINHART. 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 WED AUG 23.
24 HOUR FORECAST VALID 0600 UTC THU AUG 24.
48 HOUR FORECAST VALID 0600 UTC FRI AUG 25.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM KENNETH NEAR 23.5N 134.3W 999 MB AT 0900 UTC AUG
23 MOVING NNW OR 340 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 50 KT
GUSTS 60 KT. TROPICAL STORM FORCE WINDS WITHIN 70 NM N AND 50 NM
S SEMICIRCLES. SEAS 12 FT OR GREATER WITHIN 100 NM OF CENTER
EXCEPT 120 NM NW QUADRANT WITH SEAS TO 21 FT. ELSEWHERE WITHIN
180 NM N AND 75 NM S SEMICIRCLES WINDS 20 TO 33 KT. SEAS 9 TO 12
FT. REMAINDER AREA N OF 20N W OF 130W WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED SWELL.
.24 HOUR FORECAST POST-TROPICAL REMNANT LOW KENNETH NEAR 26.4N
135.8W. MAXIMUM SUSTAINED WINDS 30 KT GUSTS 40 KT. WITHIN 150 NM
N AND 45 NM S SEMICIRCLES WINDS 20 TO 30 KT. SEAS 9 TO 14 FT.
ELSEWHERE N OF 24N W OF 133W WINDS 20 KT OR LESS. SEAS 8 TO 11
FT IN MIXED SWELL.
.48 HOUR FORECAST POST-TROPICAL REMNANT LOW KENNETH NEAR 28.4N
136.4W. MAXIMUM SUSTAINED WINDS 25 KT GUSTS 35 KT. WITHIN 75 NM
OF CENTER WINDS 20 TO 25 KT. SEAS 8 TO 12 FT. ELSEWHERE NW OF
LINE FROM 30N133W TO 26N140W WINDS 20 KT OR LESS. SEAS TO 10 FT
IN MIXED SWELL.
.72 HOUR FORECAST POST-TROPICAL REMNANT LOW KENNETH NEAR 29.4N
137.3W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST-TROPICAL REMNANT LOW KENNETH NEAR 30.4N
138.9W. MAXIMUM SUSTAINED WINDS 20 KT GUSTS 30 KT.
.120 HOUR FORECAST...DISSIPATED.

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.

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

CONVECTION VALID AT 0900 UTC WED AUG 23...

.TROPICAL STORM KENNETH...SCATTERED MODERATE WITHIN 120 NM N OF
CENTER.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N79W TO 13N106W TO 09N130W. ITCZ FROM
09N130W TO 07N140W. SCATTERED MODERATE ISOLATED STRONG FROM 06N
TO 08N E OF 83W...WITHIN 30 NM OF LINE FROM 13N94W TO 11N96W...
AND WITHIN 75 NM N AND 30 NM S OF OF AXIS BETWEEN 126W AND 137W.
SCATTERED MODERATE WITHIN 90 NM OF AXIS BETWEEN 113W AND 123W.

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.


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