High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 302140
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
2230 UTC THU MAR 30 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC MAR 30.
24 HOUR FORECAST VALID 1800 UTC MAR 31.
48 HOUR FORECAST VALID 1800 UTC APR 01.

.WARNINGS.

...STORM WARNING...
.LOW 51N162W 966 MB MOVING NE 10 KT WITH SECOND LOW 46N166W 971
MB MOVING NE 20 KT. BETWEEN 420 NM AND 660 NM NE...AND WITHIN
240 NM N AND 180 NM NW QUADRANTS OF FIRST LOW WINDS 40 TO 50 KT.
SEAS 12 TO 22 FT. ALSO WITHIN 420 NM SE AND 540 NM SW QUADRANTS
OF SECOND LOW WINDS 40 TO 50 KT. SEAS 22 TO 36 FT. ELSEWHERE
WITHIN 840 NM NE...1080 NM SE...1140 NM SW...AND 720 NM NW
QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT...EXCEPT 12 TO 24
FT SE AND SW QUADRANTS.
.24 HOUR FORECAST FIRST LOW 55N157W 974 MB WITH SECOND LOW
52N156W 975 MB. WITHIN 480 NM SE AND 420 NM S QUADRANTS OF
SECOND LOW WINDS 35 TO 45 KT. SEAS 18 TO 30 FT. ALSO FROM 47N TO
55N BETWEEN 128W AND 131W AREA OF SE TO S WINDS 35 TO 45 KT.
SEAS 9 TO 16 FT. ELSEWHERE WITHIN 660 NM NW AND NE...960 NM
SE...AND 600 NM SW QUADRANTS OF FIRST LOW WINDS 25 TO 35 KT.
SEAS 12 TO 24 FT...EXCEPT IN ICE FREE WATERS 10 TO 20 FT NW
QUADRANT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 58N151W 988 MB.
OVER FORECAST WATERS WITHIN 240 NM NE...780 NM SE...480 NM
SW...AND 600 NM W QUADRANTS WINDS 25 TO 40 KT...HIGHEST SE
QUADRANT. SEAS 12 TO 24 FT...EXCEPT IN ICE FREE WATERS 9 TO 18
FT W QUADRANT.

...GALE WARNING...
.OVER FORECAST WATERS FROM 30N TO 42N BETWEEN 119W AND 128W AREA
OF N TO NW WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST FROM 30N TO 42N E OF 128W AREA OF N TO NW
WINDS 25 TO 35 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST FROM 30N TO 42N BETWEEN 122W AND 131W AREA OF
N TO NW WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.LOW 38N176E 1010 MB MOVING E 35 KT. EXCEPT AS DESCRIBED WITH
LOWS 51N162W AND 46N166W ABOVE...WITHIN 600 NM NW...240 NM NE
AND SE...AND 660 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO
20 FT.
.24 HOUR FORECAST LOW 42N164W 1012 MB. EXCEPT AS DESCRIBED WITH
LOWS 55N157W AND 52N156W ABOVE...WITHIN 300 NM NW...120 NM
NE...240 NM SE...AND 840 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS
10 TO 20 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW
58N151W ABOVE.

...GALE WARNING...
.LOW 41N163E 1006 MB MOVING E 25 KT. EXCEPT AS DESCRIBED WITH
LOW 38N176E ABOVE...OVER FORECAST WATERS WITHIN 180 NM NW...300
NM SE...AND 360 NM S QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16
FT.
.24 HOUR FORECAST LOW 43N177E 995 MB. WITHIN 120 NM S SEMICIRCLE
WINDS 35 TO 45 KT. SEAS 15 TO 24 FT. ELSEWHERE WITHIN 180 NM N
SEMICIRCLE...AND WITHIN 300 NM SE...540 NM S...AND 480 NM SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW 46N180W 997 MB. WITHIN 240 NM N...180 NM
W...AND 300 NM S QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 36N160E 1007 MB. OVER FORECAST WATERS
WITHIN 420 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 16 FT.
.48 HOUR FORECAST LOW 38N175W 1000 MB. WITHIN 240 NM SE AND SW
QUADRANTS WINDS 35 TO 45 KT. SEAS 12 TO 22 FT. ELSEWHERE EXCEPT
AS DESCRIBED WITH LOW 46N180W ABOVE...WITHIN 240 NM NW AND
NE...360 NM SE...AND 540 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS
9 TO 18 FT.

...GALE WARNING...
.36 HOUR FORECAST NEW LOW 39N172W 1010 MB. WITHIN 240 NM E AND
SE...AND 180 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW 44N162W 1011 MB. WITHIN 180 NM NE AND
SW...AND 90 NM W QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 16 FT.

...GALE WARNING...
.48 HOUR FORECAST LOW 36N160E 997 MB. OVER FORECAST WATERS
WITHIN 240 NM NE AND 420 NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS
9 TO 18 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF A LINE FROM 61N178W TO 57N171W TO 56N165W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 59N175W TO 56N168W TO 57N162W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 57N168W TO 56N165W TO 57N162W.

.SYNOPSIS AND FORECAST.

.BOGOSLOF VOLCANO AT 54N168W IS IN A STATE OF UNREST. MARINERS
TRAVELING IN THE VICINITY OF THE 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 46N TO 50N E OF 128W AREA OF NW WINDS
TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOWS 55N157W AND
52N156W IN WARNINGS SECTION ABOVE.

.LOW 46N168E 998 MB MOVING SE 10 KT. WITHIN 240 NM NW QUADRANT
WINDS TO 25 KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW 44N171E 1003 MB. WITHIN 360 NM W QUADRANT
WINDS 20 TO 30 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 46N180W IN
WARNINGS SECTION ABOVE.

.EXCEPT AS NOTED IN WARNINGS SECTION ABOVE FROM 30N TO 55N
BETWEEN 116W AND 150W WINDS TO 25 KT. SEAS TO 12 FT.
.24 HOUR FORECAST EXCEPT AS NOTED IN WARNINGS SECTION ABOVE FROM
30N TO 50N BETWEEN 116W AND 140W WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST EXCEPT AS NOTED IN WARNINGS SECTION ABOVE FROM
30N TO 50N BETWEEN 116W AND 165W WINDS TO 25 KT. SEAS 8 TO 16 FT.

.48 HOUR FORECAST NEW LOW 46N170W 1000 MB. WITHIN 120 NM E
SEMICIRCLE WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.

.LIGHT TO MODERATE FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF A LINE FROM 58N178E TO 55N175W TO 56N162W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 58N177E TO 54N173W TO 53N165W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 59N173W TO 56N165W TO 56N162W.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN AN AREA
BOUNDED BY 32N157W TO 47N155W TO 48N164W TO 55N158W TO 55N145W
TO 46N138W TO 35N140W TO 32N157W.
.24 HOUR FORECAST DENSE FOG WITHIN 300 NM EITHER SIDE OF A LINE
FROM 52N132W TO 37N142W.
.48 HOUR FORECAST CONDITIONS IMPROVING.

.HIGH 38N133W 1034 MB MOVING SW 05 KT.
.24 HOUR FORECAST HIGH 36N136W 1032 MB.
.48 HOUR FORECAST HIGH 34N139W 1033 MB.

.HIGH 33N139W 1031 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH MERGED WITH HIGH 36N136W.

.24 HOUR FORECAST NEW HIGH 35N160W 1026 MB.
.48 HOUR FORECAST HIGH 43N139W 1034 MB.

.FORECASTER FIGURSKEY. 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 1800 UTC THU MAR 30.
24 HOUR FORECAST VALID 1800 UTC FRI MAR 31.
48 HOUR FORECAST VALID 1800 UTC SAT APR  1.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT APPROACHING FROM N. FROM 12N TO 19N W OF 138W NE
WINDS 20 TO 25 KT. SEAS 10 TO 12 FT IN MIXED NE WIND WAVES AND NW
SWELL. ELSEWHERE W OF A LINE FROM 30N115W TO 22N110W TO 11N110W
TO 01N125W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SW AND
NW SWELL.
.12 HOUR FORECAST COLD FRONT FROM 30N114W TO 27N120W TO 28N130W.
N OF 28.5N BETWEEN 117W AND 125W NW TO N WINDS 20 TO 25 KT. SEAS
10 TO 13 FT IN NW TO N SWELL. WITHIN AREA BOUNDED BY 26N136W TO
26N124W TO 20N133W TO 20N140W TO 26N136W NE TO E WINDS 20 TO 25
KT. SEAS 9 TO 10 FT. ELSEWHERE W OF A LINE FROM 30N115W TO
21N110W TO 12N110W TO 02N124W WINDS 20 KT OR LESS. SEAS 8 TO 11
FT IN MIXED SW AND NW SWELL.
.24 HOUR FORECAST COLD FRONT WEAKENING FROM 26N112W TO 23N123W
TO 24N133W. N OF 28.5N BETWEEN 116W AND 125W NW TO N WINDS 20 TO
25 KT. SEAS 10 TO 13 FT IN NW TO N SWELL. ELSEWHERE W OF A LINE
FROM 30N115W TO 25N112W TO 16N133W WINDS 20 KT OR LESS. SEAS 8 TO
11 FT IN MIXED SW AND NW SWELL. FROM 02N TO 16N W OF 120W WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE WIND WAVES AND NW
SWELL.
.48 HOUR FORECAST COLD FRONT DISSIPATED. N OF 26N BETWEEN 123W
AND 130W N TO NE WINDS 20 TO 25 KT. SEAS 10 TO 13 FT IN NW TO N
SWELL. ELSEWHERE W OF A LINE FROM 30N115W TO 22N112W TO 20N130W
TO 04N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED SW AND
NW SWELL.

.06 HOUR FORECAST COLD FRONT APPROACHING 32N115W. GULF OF
CALIFORNIA N OF 29.5N SW TO W WINDS 20 TO 25 KT...INCREASING TO
25 TO 30 KT. SEAS TO 8 FT.
.18 HOUR FORECAST COLD FRONT FROM 30.5N113W TO 30.5N115W. GULF OF
CALIFORNIA S OF FRONT TO 29.5N SW TO W WINDS 20 TO 30 KT. SEAS
TO 8 FT. N OF FRONT NW TO N WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST COLD FRONT 29N112W TO 28.5N113W. GULF OF
CALIFORNIA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.24 HOUR FORECAST S OF 02S W OF 105W WINDS 20 KT OR LESS. SEAS TO
8 FT IN MIXED SW AND NW SWELL.
.48 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 2100 UTC THU MAR 30...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH AXIS EXTENDS FROM 07N85W TO 05N93W TO 07N100W. ITCZ AXIS
EXTENDS FROM 06N102W TO 02N120W TO 02N131W. SCATTERED MODERATE
FROM 05N TO 07N BETWEEN 82W AND 84W AND WITHIN 90 NM NW OF A
LINE FROM 04N125W TO 03N128W TO 01N132W.

$$

.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.


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