High Seas Forecast
Issued by NWS

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087
FZPN01 KWBC 211049 CCA
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SAT JAN 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

PAN PAN

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

SYNOPSIS VALID 0600 UTC JAN 21.
24 HOUR FORECAST VALID 0600 UTC JAN 22.
48 HOUR FORECAST VALID 0600 UTC JAN 23.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW W OF AREA WITH MAIN CENTER 38N158E 984 MB MOVING NE
35 KT AND RAPIDLY INTENSIFYING THEN SLOWING AFTER 24 HOURS. OVER
FORECAST WATERS WITHIN 480 NM SE QUADRANT WINDS 35 TO 50 KT.
SEAS 16 TO 26 FT. ELSEWHERE FROM 30N TO 41N W OF 172E AND WITHIN
300 NM SE AND S OF A STATIONARY FRONT FROM 45N179W TO 41N172E
WINDS 25 TO 40 KT. SEAS 10 TO 19 FT.
.24 HOUR FORECAST LOW 47N173E 958 MB. FROM 34N TO 43N BETWEEN
177W AND 167E WINDS 45 TO 55 KT. SEAS 24 TO 36 FT. ALSO WITHIN
840 NM S...BETWEEN 180 NM AND 540 NM SE QUDRANTS...WITHIN 420 NM
NW SEMICIRCLE AND WITHIN 180 NM N OF A FRONT FROM 50N175E TO
49N172W WINDS 40 TO 50 KT. SEAS 18 TO 29 FT...EXCEPT N OF 47N 10
TO 22 FT. ELSEWHERE W OF A LINE FROM 55N180W TO 44N160W TO
40N160W TO 30N178W WINDS 25 TO 40 KT. SEAS 9 TO 25 FT...HIGHEST
S OF LOW.
.36 HOUR FORECAST LOW 50N178E 948 MB. BETWEEN 180 NM AND 360 NM
W QUADRANT AND FROM 42N TO 47N BETWEEN 169E AND 174E WINDS 50 TO
65 KT. SEAS 28 TO 38 FT.
.48 HOUR FORECAST LOW 50N178W 946 MB. FRONT TO EXTEND FROM
54N176W TO 55N168W TO 50N157W TO 32N170W. BETWEEN 120 NM AND 360
NM W AND SW QUADRANTS AND FROM 41N TO 46N BETWEEN 173W AND 175E
WINDS 50 TO 65 KT. SEAS 30 TO 48 FT...HIGHEST S OF LOW. ALSO
FROM 38N TO 47N BETWEEN 169W AND 174E AND WITHIN 420 NM W AND NW
QUADRANTS AND WITHIN 180 NM N OF FRONT N OF 54N WINDS 40 TO 50
KT. SEAS 28 TO 40 FT...EXCEPT N OF 48N 18 TO 37 FT. ELSEWHERE
WITHIN 660 NM NW SEMICIRCLE AND 900 NM S AND SE QUADRANTS AND
WITHIN 300 NE AND E OF FRONT WINDS 25 TO 40 KT. SEAS 14 TO 33
FT...EXCEPT NE AND E OF FRONT 11 TO 25 FT.

...STORM WARNING...
.LOW 39N145W 998 MB MOVING NE 30 KT AND RAPIDLY INTENSIFYING
NEXT 24 HOURS THEN TURNING MORE N AND SLOWING. WITHIN 780 NM W
AND SW QUADRANTS N OF 30N WINDS 25 TO 40 KT. SEAS 13 TO 21 FT.
.24 HOUR FORECAST LOW 43N131W 968 MB. FRONT TO EXTEND FROM LOW
TO 40N126W TO 30N129W. WITHIN 180 NM S AND SE SEMICIRCLES AND
120 NM NE QUADRANT AND WITHIN 60 NM NE OF FRONT N OF 39N WINDS
45 TO 60 KT. SEAS 15 TO 28 FT. ELSEWHERE WITHIN 300 NM SE AND
150 NM NW SEMICIRCLES AND WITHIN 120 NM E OF FRONT N OF 32N
WINDS 30 TO 45 KT. SEAS 14 TO 22 FT.
.48 HOUR FORECAST LOW 45N132W 979 MB. WITHIN 240 NM SW QUADRANT
WINDS 40 TO 55 KT. SEAS 21 TO 32 FT. ELSEWHERE WITHIN 900 NM
S...420 NM W AND AND 240 NM NW QUADRANTS AND BETWEEN 180 NM AND
300 NM NE QUADRANT WINDS 25 TO 40 KT. SEAS 13 TO 27 FT...HIGHEST
NEAR 34N137W.

...STORM WARNING...
.LOW 47N146W 986 MB MOVING SE 15 KT. WITHIN 120 NM S AND 180 NM
W QUADRANTS WINDS 40 TO 50 KT. SEAS 18 TO 25 FT. ELSEWHERE
WITHIN 660 NM W AND 300 NM S AND 180 NM S QUADRANTS WINDS 25 TO
40 KT. SEAS 14 TO 21 FT.
.24 HOUR FORECAST LOW 44N1137W 982 MB. WITHIN 180 NM SW QUADRANT
AND FROM 38N TO 46N BETWEEN 140W AND 147W WINDS 40 TO 50 KT.
SEAS 15 TO 28 FT. ELSEWHERE WITHIN 600 NM W QUADRANT AND FROM
30N TO 40N BETWEEN 137W AND 151W WINDS 25 TO 40 KT. SEAS 12 TO
22 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MERGED WITH LOW
45N132W ABOVE.

...STORM WARNING...
.LOW 34N144W 1004 MB MOVING NE 35 KT AND RAPIDLY INTENSIFYING.
WITHIN 240 NM S QUADRANT WINDS 25 TO 40 KT. SEAS 13 TO 19 FT.
.12 HOUR FORECAST LOW 37N136W 992 MB. WITHIN 180 NM S AND SW
QUADRANTS WINDS 35 TO 50 KT. SEAS 17 TO 23 FT.
.24 HOUR FORECAST LOW AND CONDITIONS MERGED WITH LOW 43N131W
ABOVE.

...GALE WARNING...
.COMPLEX LOW WITH MAIN CENTER 47N131W 978 MB MOVING NW 15 KT AND
A SECOND LOW 44N131W 980 MB MOVING NE 15 KT. WITHIN 300 NM W AND
SW QUADRANTS OF SECOND LOW AND WITHIN 300 NM SW OF A LINE FROM
41N128W TO 33N118W WINDS 30 TO 45 KT. SEAS 23 TO 40 FT...EXCEPT
E OF 123W 12 TO 23 FT.
.24 HOUR FORECAST LOW 50N139W 981 MB. WITHIN 240 NM W QUADRANT
WINDS 35 TO 45 KT. SEAS 10 TO 19 FT. ALSO BETWEEN 180 NM AND 360
NM NE QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MERGED WITH LOW
45N132W ABOVE.

...GALE WARNING...
.LOW 49N167E 995 MB MOVING NE 15 KT. FRONT EXTENDS FROM 51N170E
TO 49N175E TO 45N179W. WITHIN 240 NM NW SEMICIRCLE AND WITHIN
180 NM NE AND E OF FRONT WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS MERGED WITH LOW
47N173E DESCRIBED ABOVE.

...GALE WARNING...
.COMPLEX LOW WITH MEAN CENTER 57N152W 995 MB MOVING NE 05 KT.
FROM 52N TO 59N BETWEEN 156W AND 163W AREA OF NW WINDS 25 TO 35
KT. SEAS IN ICE FREE WATERS TO 12 FT.
.24 HOUR FORECAST LOW 60N148W 997 MB. FROM 54N TO 59N BETWEEN
152W AND 157W AREA OF NW WINDS 25 TO 35 KT. SEAS TO 11 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS MERGED WITH NEW
LOW 58N143W BELOW.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 58N143W 993 MB. WITHIN 120 NM NE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 9 TO 13 FT. ELSEWHERE N OF
53N BETWEEN 135W AND 148W WINDS 20 TO 30 KT. SEAS TO 10 FT.

...GALE WARNING...
.48 HOUR FORECAST OVER FORECAST WATERS W OF A LINE FROM 45N160E
TO 38N164E TO 32N162E AREA OF S TO SE WINDS 30 TO 40 KT. SEAS 10
TO 21 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF A LINE FROM 57N159W TO 54N166W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 58N152W TO 57N157W TO 61N176W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 57N159W TO 59N180W.

.SYNOPSIS AND FORECAST.

.BOGOSLOF VOLCANO AT 53N168W IS IN A 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.

.EXCEPT AS DESCRIBED IN WARNINGS SECTION ABOVE LIGHT TO MODERATE
FREEZING SPRAY OVER FORECAST WATERS N OF A LINE FROM 50N172E TO
53N170W TO 56N160W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 57N155W TO 53N160W TO 58N180W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 57N150W TO 55N160W TO 58N177E.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 180 NM SE OF
A LINE FROM 45N180W TO 40N163E.
.24 HOUR FORECAST DENSE FOG FROM 40N TO 49N BETWEEN 164W AND
174E.
.48 HOUR FORECAST DENSE FOG FROM 41N TO 51N BETWEEN 152W AND
162W.

.HIGH 35N172W 1036 MB MOVING SE 25 KT.
.24 HOUR FORECAST HIGH 33N160W 1033 MB.
.48 HOUR FORECAST HIGH 31N151W 1031 MB.

.HIGH 56N146W 1002 MB MOVING E 10 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST HIGH 32N170E 1023 MB.

.FORECASTER BANCROFT. 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 SAT JAN 21.
24 HOUR FORECAST VALID 0600 UTC SUN JAN 22.
48 HOUR FORECAST VALID 0600 UTC MON JAN 23.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N117W TO 26N122W TO 25N133W. E OF FRONT N OF
26N SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 14 FT. W OF FRONT AND E
OF LINE FROM 30N128W TO 27N121W W TO NW WINDS 20 TO 30 KT. SEAS
14 TO 22 FT IN NW SWELL. ELSEWHERE N OF LINE FROM 24N113W TO
10N128W TO 05N140W WINDS 20 KT OR LESS. SEAS 8 TO 22 FT IN NW
SWELL...HIGHEST NEAR 30N134W.
.24 HOUR FORECAST FIRST FRONT DISSIPATED OVER MEXICO. NEW COLD
FRONT FROM 30N130W TO 26N135W TO 23N140W. E OF FRONT N OF LINE
FROM 27N133W TO 30N122W SW WINDS 20 TO 30 KT. SEAS 15 TO 21 FT
IN NW SWELL. W OF FRONT NW WINDS 20 TO 30 KT. SEAS 12 TO 21 FT
IN NW SWELL...HIGHEST NW PART. ELSEWHERE OUTSIDE OF GULF OF
CALIFORNIA AND N OF LINE FROM 16N107W TO 06N125W TO 05N140W
WINDS 20 KT OR LESS. SEAS 8 TO 22 FT IN NW SWELL...HIGHEST NEAR
30N120W.
.48 HOUR FORECAST COLD FRONT FROM 30N120W TO 26N123W TO 23N128W.
W OF LINE FROM 30N122W TO 27N126W W TO NW WINDS 20 TO 30 KT.
SEAS 15 TO 24 FT IN NW SWELL...HIGHEST NEAR 30N133W. W OF LINE
FROM 24N140W TO 21N133W TO 17N136W TO 14N129W TO 09N140W NE
WINDS 20 TO 25 KT. SEAS 9 TO 14 FT. E OF 107W BETWEEN 18N AND
20.5N NW TO N WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. OUTSIDE GULF
OF CALIFORNIA AND N OF LINE FROM 14N102W TO 05N110W TO 00N134W
TO 00N140W WINDS 20 KT OR LESS. SEAS 8 TO 17 FT IN NW SWELL.

.GULF OF CALIFORNIA COLD FRONT ENTERING GULF. N OF 29N SW WINDS
20 TO 30 KT. SEAS TO 9 FT.
.24 HOUR FORECAST COLD FRONT DISSIPATED. WINDS 20 KT OR LESS.
SEAS LESS THAN 8 FT.
.42 HOUR FORECAST GULF OF CALIFORNIA FROM 22N TO 25N NW WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST NEW COLD FRONT APPROACHING GULF. N OF 30N SW
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF
TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

CONVECTION VALID AT 0900 UTC SAT JAN 21...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
SURFACE TROUGH FROM 08N78W TO 07N79W TO 10N85W TO 08N89W. ITCZ
CONTINUES FROM 08N89W TO 06N95W TO 07N102W TO 05N113W TO 07N122W
TO 04N140W. NO SIGNIFICANT CONVECTION.

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.



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