High Seas Forecast
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000
FZPN02 KWBC 210525
HSFEPI

HIGH SEAS FORECAST FOR METAREA XII
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0545 UTC THU SEP 21 2017

CCODE/1:31:12:01:00/AOW+POR/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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

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

SYNOPSIS VALID 0000 UTC SEP 21.
24 HOUR FORECAST VALID 0000 UTC SEP 22.
48 HOUR FORECAST VALID 0000 UTC SEP 23.

.WARNINGS.

...GALE WARNING...
.LOW 49N177W 989 MB MOVING NE 10 KT. WITHIN 720 NM NE...660 NM
SE...360 NM SW...AND 540 NM NW QUADRANTS...AND WITHIN 240 NM E
OF A FRONT FROM 53N165W TO 48N163W TO 38N164W WINDS 25 TO 40 KT.
SEAS 9 TO 17 FT.
.24 HOUR FORECAST LOW 49N172W 997 MB. WITHIN 300 NM S SEMICIRCLE
AND 660 NM NE AND 600 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9
TO 17 FT.
.48 HOUR FORECAST LOW 54N162W 996 MB. WITHIN 360 NM SE...420 NM
SW...AND 720 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 13 FT.

...GALE WARNING...
.LOW 38N170E 1010 MB MOVING E 20 KT. WITHIN 240 NM SE AND S
QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST LOW 38N178E 1013 MB. WITHIN 180 NM SE OF A
FRONT TO EXTEND FROM LOW CENTER TO 34N176E WINDS TO 25 KT. SEAS
TO 9 FT.
.48 HOUR FORECAST LOW 40N170W 1009 MB. WITHIN 180 NM SE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 39N167E 1010 MB. WITHIN 360 NM SE AND
660 NM SW QUADRANTS WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 39N178E 1007 MB. WITHIN 300 NM SE AND 540
NM SW QUADRANTS WINDS 25 TO 35 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.

.OVER FORECAST WATERS FROM 39N TO 57N BETWEEN 126W AND 140W AREA
OF N TO NW WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST FROM 37N TO 53N BETWEEN 127W AND 136W AREA OF
N TO NW WINDS 20 TO 30 KT. SEAS 8 TO 13 FT.
.48 HOUR FORECAST FROM 34N TO 42N BETWEEN 124W AND 130W AREA OF
N TO NW WINDS TO 25 KT. SEAS TO 10 FT.

.24 HOUR FORECAST OVER FORECAST WATERS FROM 31N TO 39N BETWEEN
118W AND 125W AREA OF NW WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST FROM 31N TO 35N BETWEEN 118W AND 122W AREA OF
NW WINDS TO 25 KT. SEAS TO 9 FT.

.24 HOUR FORECAST NEW LOW 58N152W 1006 MB. WITHIN 360 NM E AND
480 NM SE QUADRANTS...AND WITHIN 180 NM E OF A FRONT TO EXTEND
FROM 51N150W TO 40N160W WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW DISSIPATED. WITHIN 240 NM E OF A LINE FROM
52N145W TO 39N159W AREA OF SW WINDS TO 25 KT. SEAS TO 10 FT.

.24 HOUR FORECAST LOW W OF AREA 44N156E 1005 MB. OVER FORECAST
WATERS WITHIN 180 NM N OF A FRONT TO EXTEND FROM 43N160E TO
41N67E WINDS TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST LOW 41N169E 1009 MB. WITHIN 120 NM N
SEMICIRCLE AND 420 NM SW QUADRANT WINDS TO 25 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 39N TO 55N
BETWEEN 149W AND 175W.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 58N BETWEEN 141W AND
161W.
.48 HOUR FORECAST DENSE FOG WITHIN 360 NM E OF A LINE FROM
54N151W TO 42N159W.

.HIGH 47N144W 1032 MB MOVING S 10 KT.
.24 HOUR FORECAST HIGH 43N144W 1032 MB.
.48 HOUR FORECAST HIGH 42N142W 1030 MB.

.HIGH 42N151W 1032 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH MERGED WITH HIGH 43N144W.

.HIGH 30N179E 1019 MB MOVINGE 30 KT.
.24 HOUR FORECAST HIGH 31N176W 1021 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.FORECASTER BELL. 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 THU SEP 21.
24 HOUR FORECAST VALID 0000 UTC FRI SEP 22.
48 HOUR FORECAST VALID 0000 UTC SAT SEP 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.POST-TROPICAL REMNANT LOW NORMA NEAR 22N117.5W 1007 MB MOVING W
7 KT. WITHIN 90 NM NW QUADRANT N TO NE WINDS 20 TO 25 KT. SEAS 8
FT.
.24 HOUR FORECAST LOW PRES NEAR 23N117W. WITHIN 90 NM W
SEMICIRCLE NW TO N WINDS 20 TO 25 KT. SEAS 8 TO 10 FT WITH NW
SWELL.
.48 HOUR FORECAST LOW TO DISSIPATE. FROM 18N TO 22N BETWEEN 115W
AND 117W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MERGING SE AND NW
SWELL.

.POST-TROPICAL REMNANT LOW OTIS NEAR 16N131.5W 1009 MB MOVING SW
10 KT. WITHIN 150 NM NW SEMICIRCLE N TO NE WINDS 20 TO 25 KT.
SEAS 8 TO 9 FT. ELSEWHERE FROM 12.5N TO 21N BETWEEN 131W AND
139W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.24 HOUR FORECAST LOW TO DISSIPATE. FROM 15N TO 19N BETWEEN 132W
AND 137W WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.N OF LINE FROM 30N118W TO 23N133W TO 21.5N140W WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST...EXCEPT AS NOTED ABOVE...N OF 20N BETWEEN
116W AND 128W WINDS 20 KT OR LESS. SEAS TO 9 FT IN NW SWELL.
.48 HOUR FORECAST N OF 28N BETWEEN 117W AND 123W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.

.FROM 02N TO 13N BETWEEN 99W AND 115W WINDS 20 KT OR LESS. SEAS
TO 10 FT IN SE SWELL AND S WIND WAVES.
.24 HOUR FORECAST WITHIN 150 NM SE OF LINE FROM 14.5N100W TO
11N112W S TO SW WINDS 20 TO 25 KT. SEAS TO 9 FT. ELSEWHERE FROM
02N TO 10N BETWEEN 110W AND 122W WINDS 20 KT OR LESS. SEAS TO 8
FT IN SE SWELL.
.48 HOUR FORECAST LOW PRES NEAR 17N102.5W 1006 MB. WITHIN 90 NM
NE AND 150 NM SW SEMICIRCLES WINDS 20 TO 25 KT. SEAS TO 9 FT.
FROM 10N TO 14N BETWEEN 98W AND 110W SW TO W WINDS 20 TO 25 KT.
SEAS TO 8 FT.

.GULF OF CALIFORNIA N OF 30N SW WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.
.24 HOUR FORECAST GULF OF CALIFORNIA N OF 29.5N SW WINDS 20 TO
25 KT. SEAS LESS THAN 8 FT.
.36 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 0200 UTC THU SEP 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09N72.5W TO 10N83W TO 15N92W TO 11N126W TO
LOW PRES NEAR 12N136W TO BEYOND 13N140W. SCATTERED MODERATE TO
STRONG FROM 06N TO 11N BETWEEN 80W AND 86W...AND WITHIN 120 NM N
AND 210 NM S OF TROUGH FROM 92W TO 113W.

.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.

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

SYNOPSIS VALID 0000 UTC SEP 21 2017.
24 HOUR FORECAST VALID 0000 UTC SEP 22 2017.
48 HOUR FORECAST VALID 0000 UTC SEP 23 2017.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.LOW 13N159W 1010 MB NEARLY STATIONARY. TROUGH FROM LOW TO
11N152W TO 13N145W TO 13N140W NEARLY STATIONARY. ISOLATED
MODERATE TSTMS FROM 09N TO 14N BETWEEN 149W AND 159W...AND FROM
12N TO 14N E OF 147W.
.24 HOUR FORECAST LOW 13N159W 1010 MB. TROUGH FROM LOW TO
14N150W TO 11N140W. WINDS 20 TO 25 KT WITHIN 180 NM NE QUADRANT
OF LOW.
.48 HOUR FORECAST LOW 14N161W 1010 MB. TROUGH FROM LOW TO
14N150W TO 10N140W. WINDS EASED TO 20 KT OR LESS.

.FRONT FROM 30N170W TO 24N180E TO 22N170E TO 23N160E NEARLY
STATIONARY. ISOLATED MODERATE TSTMS WITHIN 60 NM OF FRONT W OF
179E.
.24 HOUR FORECAST WEAKENING FRONT FROM 30N171W TO 25N180E TO
22N160E.
.48 HOUR FORECAST FRONT WEAKENED TO TROUGH FROM 30N173W TO
24N176E.

.TROUGH FROM 09N165E TO 06N165E TO 02N162E MOVING W 15 KT.
ISOLATED TO LOCALLY SCATTERED MODERATE TO STRONG TSTMS FROM 05N
TO 09N W OF 170E...AND FROM 02N TO 05N W OF 165E.
.24 HOUR FORECAST TROUGH MOVED W OF FORECAST AREA.

.TROUGH FROM 13N172W TO 06N176W MOVING W 10 KT. ISOLATED
MODERATE TSTMS FROM 10N TO 12N BETWEEN 168W AND 170W.
.24 HOUR FORECAST WEAK TROUGH FROM 12N175W TO 07N179W.
.48 HOUR FORECAST TROUGH DISSIPATED.

.HIGH 30N169E 1019 MB MOVING ENE 20 KT. RIDGE FROM 29N160E TO
HIGH TO 28N177E TO 28N179W.
.24 HOUR FORECAST HIGH MOVED N OF FORECAST AREA.

.RIDGE FROM 30N165W TO 23N175W MOVING N SLOWLY AND GRADUALLY
ERODING FROM THE W.

.OTHERWISE...WINDS 20 KT OR LESS OVER REMAINDER OF FORECAST
AREA.

.SEAS 8 TO 9 FT N OF 23N BETWEEN 163E AND 177W.
.24 HOUR FORECAST SEAS SUBSIDED TO 8 FT OR LOWER.

.OTHERWISE...SEAS 8 FT OR LOWER OVER REMAINDER OF FORECAST AREA.

.ISOLATED MODERATE TSTMS FROM 11N TO 15N BETWEEN 171E AND
174E...AND S OF 06N BETWEEN 175E AND 179E.

$$

.FORECASTER KINEL. HONOLULU HI.



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