High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 301538
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC MAR 30.
24 HOUR FORECAST VALID 1200 UTC MAR 31.
48 HOUR FORECAST VALID 1200 UTC APR 01.

.WARNINGS.

...STORM WARNING...
.LOW 51N163W 967 MB MOVING NE 10 KT WITH SECOND LOW 45N169W 967
MB MOVING NE 20 KT. BETWEEN 180 NM AND 360 NM NE...WITHIN 240 NM
NW...AND WITHIN 300 NM W QUADRANTS OF FIRST LOW...AND WITHIN 360
NM SW AND 480 NM SE QUADRANTS OF SECOND LOW WINDS 40 TO 50 KT.
SEAS 12 TO 24 FT...EXCEPT 24 TO 40 FT SW AND SE QUADRANTS OF
SECOND LOW. ELSEWHERE WITHIN 720 NM NW...660 NM NE...1020 NM SE
AND 1200 NM SW QUADRANTS OF FIRST LOW WINDS 25 TO 40 KT. SEAS 11
TO 22 FT...EXCEPT 15 TO 28 FT SE AND SW QUADRANTS OF FIRST LOW.
.24 HOUR FORECAST LOW 54N159W 971 MB WITH SECOND LOW 51N160W 971
MB. WITHIN 600 NM SE QUADRANT OF SECOND LOW WINDS 35 TO 45 KT.
SEAS 20 TO 34 FT. ELSEWHERE WITHIN 780 NM NE...1140 NM E...1080
NM SE...780 NM S...AND 360 NM W QUADRANTS OF SECOND LOW WINDS 25
TO 40 KT. SEAS 15 TO 25 FT. ALSO WITHIN 540 NM NW QUADRANT OF
FIRST LOW WINDS 25 TO 35 KT. SEAS IN ICE FREE WATERS 9 TO 18 FT.
.48 HOUR FORECAST COMPLEX LOW WITH MAIN CENTER 57N155W 981 MB.
WITHIN 660 NM E...780 NM SE...600 NM S...540 NM W...AND 480 NM
NW QUADRANTS WINDS 25 TO 40 KT...HIGHEST E...SE...AND S
QUADRANTS. SEAS 15 TO 30 FT...EXCEPT IN ICE FREE WATERS 8 TO 16
FT W AND NW QUADRANTS. ALSO WITHIN 420 NM NE QUADRANT WINDS TO
25 KT. SEAS 10 TO 20 FT.

...GALE WARNING...
.OVER FORECAST WATERS FROM 30N TO 43N BETWEEN 120W AND 129W AREA
OF N TO NW WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.12 HOUR FORECAST FROM 30N TO 42N E OF 126W 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 15 FT.
.48 HOUR FORECAST FROM 30N TO 42N BETWEEN 121W AND 130W AREA OF
N TO NW WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.LOW 38N172E 1009 MB MOVING E 40 KT. EXCEPT AS DESCRIBED WITH
LOWS 51N163W AND 45N169W ABOVE...WITHIN 420 NM NW...300 NM
NE...240 NM SE...AND 540 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS
10 TO 20 FT.
.24 HOUR FORECAST LOW 40N169W 1012 MB. EXCEPT AS DESCRIBED WITH
LOWS 54N159W AND 51N160W ABOVE...WITHIN 420 NM NW...300 NM
NE...240 NM SE...AND 780 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS
11 TO 22 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW
57N155W ABOVE.

...GALE WARNING...
.LOW JUST W OF FORECAST AREA 41N159W 1008 MB MOVING E 30 KT.
OVER FORECAST WATERS WITHIN 240 NM NE AND 300 NM SE QUADRANTS
WINDS 25 TO 35 KT. SEAS 9 TO 15 FT.
.24 HOUR FORECAST LOW 43N176E 995 MB. WITHIN 480 NM S AND SW
QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 19 FT.
.48 HOUR FORECAST LOW 45N180W 997 MB. WITHIN 180 NM OF LOW WINDS
TO 25 KT. SEAS 9 TO 15 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW JUST W OF FORECAST AREA 36N159E 1007
MB. OVER FORECAST WATERS WITHIN 300 NM SE QUADRANT WINDS 25 TO
35 KT. SEAS 9 TO 15 FT.
.48 HOUR FORECAST LOW 38N179W 1000 MB. WITHIN 240 NM SE AND 300
NM SW QUADRANTS WINDS 35 TO 45 KT. SEAS 11 TO 22 FT. ELSEWHERE
WITHIN 480 NM SW...240 NM NE...420 NM SE...AND 660 NM SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.

...GALE WARNING...
.42 HOUR FORECAST NEW LOW 41N165W 1011 MB. WITHIN 180 NM SE AND
SW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW 42N163W 1011 MB. WITHIN 420 NM E...300 NM
S...AND 180 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
NE OF A LINE FROM 60N178W TO 57N173W TO 56N166W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE
FROM 60N176W TO 56N171W TO 56N165W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY NE OF A LINE
FROM 57N169W TO 56N166W.

.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 47N TO 50N E OF 129W AREA OF NW WINDS
TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST CONDITIONS DESCRIBED WITH LOWS 54N159W AND
51N160W IN WARNINGS SECTION ABOVE.

.LOW 47N167E 998 MB MOVING SE 05 KT. EXCEPT AS DESCRIBED WITH
LOW 38N172E IN WARNINGS SECTION ABOVE...WITHIN 300 NM SW AND SE
QUADRANTS WINDS 20 TO 30 KT. SEAS 9 TO 18 FT.
.24 HOUR FORECAST LOW 45N170E 999 MB. EXCEPT AS DESCRIBED WITH
LOW 43N176E IN WARNINGS SECTION ABOVE...WITHIN 180 NM S AND 300
NM W QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOWS
45N180W AND 38N179W 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 160W WINDS TO 25 KT. SEAS 8 TO 16 FT.

.LIGHT TO MODERATE FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF A LINE FROM 58N177E TO 55N173W TO 56N162W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 58N176E TO 54N171W TO 54N164W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 60N178W TO 55N164W.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN AN AREA
BOUNDED BY 33N159W TO 46N156W TO 47N168W TO 54N158W TO 46N142W
TO 35N140W TO 33N159W.
.24 HOUR FORECAST DENSE FOG FROM 36N TO 58N BETWEEN 130W AND
148W...AND WITHIN 120 NM OF 53N157W.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM SE OF A LINE FROM
40N137W TO 44N129W.

.HIGH 39N135W 1031 MB MOVING S 05 KT.
.24 HOUR FORECAST HIGH 36N135W 1031 MB.
.48 HOUR FORECAST HIGH 36N137W 1031 MB.

.HIGH 33N139W 1030 MB MOVING NE 10 KT.
.24 HOUR FORECAST HIGH MERGED WITH HIGH 36N135W.

.24 HOUR FORECAST NEW HIGH 34N166W 1024 MB.
.48 HOUR FORECAST HIGH 40N143W 1031 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 1200 UTC THU MAR 30.
24 HOUR FORECAST VALID 1200 UTC FRI MAR 31.
48 HOUR FORECAST VALID 1200 UTC SAT APR 01.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 21N W OF 110W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW
SWELL.
.12 HOUR FORECAST COLD FRONT FROM 29.5N115.5W TO 26N118W TO
24N121W. N OF 28N BETWEEN 118W AND 125W N TO NW WINDS 20 TO 25
KT. SEAS 11 TO 13 FT. ELSEWHERE N OF 21N W OF 110W WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 27N114W TO 21N122W. N OF 28N
BETWEEN 117W AND 126W NW TO N WINDS 20 TO 25 KT. SEAS 10 TO 14
FT. ELSEWHERE N OF 21N W OF 111W WINDS 20 KT OR LESS. SEAS TO
11 FT IN NW SWELL.
.48 HOUR FORECAST FRONT E OF AREA. N OF 28N BETWEEN 122W AND
129W NW TO N WINDS 20 TO 25 KT. SEAS 10 TO 12 FT. ELSEWHERE N OF
22N W OF 113W WINDS 20 KT OR LESS. SEAS TO 11 FT IN NW SWELL.

.W OF LINE FROM 21N110W TO 10N116W TO 01N128W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN MIXED NW AND NE SWELL.
.12 HOUR FORECAST W OF LINE FROM 21N111W TO 12N113W TO 04N128W
TO 02N140W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED NW AND
NE SWELL.
.24 HOUR FORECAST W OF LINE FROM 21N111W TO 12N112W TO 05N126W
TO 03N140W WINDS 20 KT OR LESS. SEAS TO 10 FT IN MIXED NW AND NE
SWELL.
.48 HOUR FORECAST W OF LINE FROM 22N130W TO 20N130W TO 14N137W
TO 08N136W TO 05N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
MIXED NE AND NW SWELL.

.12 HOUR FORECAST COLD FRONT APPROACH 32N115W. GULF OF
CALIFORNIA N OF 29.5N S TO SW WINDS 20 TO 25 KT. SEAS LESS THAN
8 FT.
.24 HOUR FORECAST COLD FRONT FROM 30.5N113W TO 29.5N114W. N OF
30N NW TO N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST COLD FRONT E OF AREA. 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 1500 UTC THU MAR 30...

SURFACE TROUGH FROM 12N105W TO 09N116W. SCATTERED MODERATE
FROM 10N TO 12N BETWEEN 108W AND 116W.

SCATTERED MODERATE ISOLATED STRONG FROM 03.4S TO 01S BETWEEN 80W
AND 86W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 07N86W TO 05N94W TO 07N100W. SCATTERED
MODERATE ISOLATED STRONG FROM 04N TO 06N BETWEEN 89W AND 91W.
ITCZ FROM 06N102W TO 05N106W TO 05N110W TO 03N116W TO BEYOND
02N120W. SCATTERED MODERATE ISOLATED STRONG FROM 02N TO 04N
BETWEEN 114W AND 116W.

$$

.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.



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