High Seas Forecast
Issued by NWS

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000
FZPN02 KWBC 200525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC SUN AUG 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC AUG 20.
24 HOUR FORECAST VALID 0000 UTC AUG 21.
48 HOUR FORECAST VALID 0000 UTC AUG 22.

.WARNINGS.

...GALE WARNING...
.FROM 38N TO 44N BETWEEN 124W AND 127W AREA OF N WINDS 30 TO 40
KT. SEAS 10 TO 17 FT. ELSEWHERE FROM 33N TO 46N BETWEEN 123W AND
131W AREA OF N WINDS 20 TO 30 KT. SEAS TO 10 FT.
.24 HOUR FORECAST FROM 34N TO 44N BETWEEN 124W AND 128W AREA OF
N WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE FROM 30N TO 45N
BETWEEN 124W AND 132W AREA OF N WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST FROM 30N TO 46N BETWEEN 124W AND 133W AREA OF
N TO NW WINDS TO 25 KT. SEAS TO 10 FT.

...GALE WARNING...
.LOW 52N163W 1000 MB MOVING NE 25 KT. FROM 43N TO 52N BETWEEN
135W AND 180W AREA OF W TO SW WINDS 20 TO 30 KT. SEAS TO 10 FT.
ALSO FROM 52N TO 54N BETWEEN 148W AND 167W WINDS TO 25 KT. SEAS
TO 8 FT.
.24 HOUR FORECAST LOW 57N149W 993 MB. WITHIN 120 NM NE OF A LINE
FROM 59N149W TO 55N137W WINDS 25 TO 35 KT. SEAS 8 TO 13 FT.
ELSEWHERE OVER FORECAST WATERS N OF A LINE FROM 52N135W TO
40N155W TO 52N166W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW 57N151W 999 MB. WITHIN 480 NM S AND 300 NM
W QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE WITHIN
300 NM NE...540 NM S...AND 360 NM W QUADRANTS...AND WITHIN 180
NM E OF A LINE FROM 55N134W TO 40N146W WINDS TO 25 KT. SEAS TO
10 FT.

...GALE WARNING...
.LOW 40N160E 1003 MB MOVING NE 10 KT. OVER FORECAST WATERS
WITHIN 420 NM E AND 300 NM N QUADRANTS WINDS 20 TO 30 KT. SEAS
TO 11 FT.
.12 HOUR FORECAST LOW 42N163E 1000 MB. WITHIN 300 NM N
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 44N162E 999 MB. WITHIN 300 NM W AND NW
SEMICIRCLES WINDS 25 TO 35 KT. SEAS 9 TO 15 FT. ELSEWHERE FROM
34N TO 47N BETWEEN 180W AND 167E WINDS 20 TO 30 KT. SEAS TO 11
FT.
.48 HOUR FORECAST LOW 49N167E 999 MB. WITHIN 840 NM E AND
SE...480 NM SW...240 NM NW...AND 300 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 63N W OF 167W AREA OF N WINDS TO 25
KT. SEAS TO 8 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 39N TO 51N
BETWEEN 137W AND 165W...FROM 52N TO 56N BETWEEN 169W AND
177E...AND FROM 38N TO 41N W OF 164E.
.24 HOUR FORECAST DENSE FOG FROM 43N TO 54N BETWEEN 134W AND
151W...FROM 52N TO 55N BETWEEN 177W AND 175E...AND FROM 41N TO
45N BETWEEN 174E AND 166E.
.48 HOUR FORECAST DENSE FOG FROM 44N TO 54N BETWEEN 134W AND
142W...FROM 51N TO 59N BETWEEN 172W AND 178E...AND FROM 41N TO
49N BETWEEN 175W AND 170E.

.HIGH 42N138W 1030 MB MOVING SW 05 KT.
.24 HOUR FORECAST HIGH 39N139W 1027 MB.
.48 HOUR FORECAST HIGH 37N140W 1025 MB.

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

.HIGH 43N177E 1023 MB MOVING SE 20 KT.
.24 HOUR FORECAST HIGH 41N173W 1026 MB.
.48 HOUR FORECAST HIGH 42N169W 1029 MB.

.24 HOUR FORECAST HIGH 54N174W 1024 MB.
.48 HOUR FORECAST HIGH 44N164W 1029 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 0000 UTC SUN AUG 20.
24 HOUR FORECAST VALID 0000 UTC MON AUG 21.
48 HOUR FORECAST VALID 0000 UTC TUE AUG 22.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM KENNETH NEAR 16.2N 125.3W 996 MB AT 0300 UTC AUG
20 MOVING W OR 280 DEG AT 15 KT. MAXIMUM SUSTAINED WINDS 60 KT
GUSTS 75 KT. TROPICAL STORM FORCE WINDS WITHIN 40 NM NW AND SE
QUADRANTS...60 NM NE QUADRANT AND 20 NM SW QUADRANT.  SEAS 12 FT
OR GREATER WITHIN 90 NM N SEMICIRCLE AND 30 NM S SEMICIRCLE WITH
SEAS TO 20 FT. ELSEWHERE WITHIN 270 NM NW AND 120 NM SE
SEMICIRCLES WINDS 20 TO 33 KT. SEAS 8 TO 11 FT.
.12 HOUR FORECAST HURRICANE KENNETH NEAR 16.6N 125.3W. MAXIMUM
SUSTAINED WINDS 65 KT GUSTS 80 KT. TROPICAL STORM FORCE WINDS
WITHIN 70 NM NE QUADRANT...50 NM SE QUADRANT...40 NM SW
QUADRANT...AND 60 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
120 NM N AND 60 NM S SEMICIRCLES OF CENTER WITH SEAS TO 23 FT.
ELSEWHERE WITHIN 270 NM NW AND 120 NM SE SEMICIRCLES WINDS 20 TO
33 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST HURRICANE KENNETH NEAR 17.3N 129.3W. MAXIMUM
SUSTAINED WINDS 70 KT GUSTS 85 KT. TROPICAL STORM FORCE WINDS
WITHIN 80 NM NE QUADRANT...60 NM SE QUADRANT...50 NM SW
QUADRANT...AND 70 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN
120 NM OF CENTER EXCEPT 90 NM SE QUADRANT WINDS WITH SEAS TO 31
FT. ELSEWHERE WITHIN 270 NM N AND 120 NM S SEMICIRCLES WINDS 20
TO 33 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST HURRICANE KENNETH NEAR 19.5N 132.7W. 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
150 NM W SEMICIRCLE... AND 120 NM NE AND 90 NM SE QUADRANTS OF
CENTER EXCEPT 90 NM SE QUADRANT WITH SEAS TO 32 FT. ELSEWHERE
WITHIN 210 NM NW AND 120 NM SE SEMICIRCLES OF CENTER WINDS 20 TO
33 KT. SEAS 8 TO 11 FT.
.72 HOUR FORECAST TROPICAL STORM KENNETH NEAR 22.3N 134.5W.
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 25.3N 135.7W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
.120 HOUR FORECAST POST-TROPICAL KENNETH NEAR 27.5N 136.9W.
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.

.36 HOUR FORECAST N OF 14N BETWEEN 94W AND 96W...INCLUDING GULF
OF TEHUATEPEC...N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.36 HOUR FORECAST N OF 29N BETWEEN 125W AND 135W WINDS 20 KT OR
LESS. SEAS TO 8 FT IN N SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 126W AND 132W WINDS 20 KT OR
LESS. SEAS 8 FT IN N SWELL.

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

CONVECTION VALID AT 0230 UTC SUN AUG 20...

.TROPICAL STORM KENNETH...NUMEROUS STRONG WITHIN 90 NM SE
AND 30 NM NW SEMICIRCLES OF THE CENTER. SCATTERED MODERATE
ISOLATED STRONG FROM 12N TO 18N BETWEEN 123W AND 127W.

.TROPICAL WAVE AXIS NEAR 105W N OF 09N...SCATTERED MODERATE
ISOLATED STRONG WITHIN 60 NM EITHER SIDE OF THE AXIS FROM 13N TO
15N.

.SCATTERED MODERATE N OF 05N E OF 82W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 10N85W TO 10N91W TO 09N97W TO 09N104W TO
08N116W. IT RESUMES FROM 13N127W TO 11N135W TO 11N140W.
SCATTERED MODERATE TO STRONG FROM 07N TO 12N E OF 87W. SCATTERED
MODERATE ISOLATED STRONG FROM 07N TO 11N BETWEEN 92W AND 100W.
SCATTERED MODERATE WITHIN 120 NM S OF THE MONSOON TROUGH W OF
132W.

.FORECASTER AL. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0000 UTC AUG 20 2017.
24 HOUR FORECAST VALID 0000 UTC AUG 21 2017.
48 HOUR FORECAST VALID 0000 UTC AUG 22 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.TROUGH FROM 16N152W TO 11N153W MOVING W SLOWLY. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF TROUGH...AND FROM 09N TO 11N
BETWEEN 150W AND 154W.
.24 HOUR FORECAST TROUGH FROM 15N154W TO 11N154W.
.48 HOUR FORECAST TROUGH FROM 15N157W TO 10N158W.

.TROUGH FROM 18N179E TO 10N179W MOVING WNW 15 KT. ISOLATED
MODERATE TSTMS WITHIN 120 NM OF TROUGH.
.24 HOUR FORECAST TROUGH FROM 17N175E TO 11N172E.
.48 HOUR FORECAST TROUGH FROM 19N170E TO 13N168E.

.TROUGH FROM 06N179E TO 09N166E TO 08N160E NEARLY STATIONARY.
.24 HOUR FORECAST TROUGH FROM 08N178E TO 08N168E TO 07N160E.
.48 HOUR FORECAST WEAKENING TROUGH FROM 10N177E TO 07N160E.

.RIDGE FROM 30N170E TO 28N160E NEARLY STATIONARY.

.WINDS 20 KT OR LESS AND SEAS 8 FT OR LESS OVER ENTIRE FORECAST
AREA.

.MONSOON TROUGH FROM 11N140W TO 12N144W. SCATTERED MODERATE
TSTMS BETWEEN TROUGH AND 07N. ISOLATED MODERATE TSTMS FRO 07N TO
14N BETWEEN 144W AND 148W.

.ITCZ FROM 10N154W TO 09N170W TO 10N175W. ISOLATED MODERATE TO
STRONG TSTMS WITHIN 180 NM S OF ITCZ W OF 166W. ISOLATED
MODERATE TSTMS ELSEWHERE WITHIN 120 NM OF ITCZ.

.SCATTERED TSTMS FROM 23N TO 28N BETWEEN 173E AND 176E...AND
FROM 20N TO 23N BETWEEN 170E AND 173E.

$$

.FORECASTER BRAVENDER. HONOLULU HI.



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