High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 200934
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC MON FEB 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

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

SYNOPSIS VALID 0600 UTC FEB 20.
24 HOUR FORECAST VALID 0600 UTC FEB 21.
48 HOUR FORECAST VALID 0600 UTC FEB 22.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 49N174E 958 MB MOVING NW 15 KT. WITHIN 180 NM SW SEMICIRCLE
AND BETWEEN 180 NM AND 300 NM NE QUADRANTS WINDS 50 TO 65 KT.
SEAS 17 TO 32 FT. ELSEWHERE WITHIN 360 NM NE...420 NM SE...AND
300 NM SW QUADRANTS WINDS 40 TO 50 KT. SEAS 15 TO 25 FT. ALSO
OVER FORECAST WATERS WITHIN 600 NM NE...1080 NM SE...1020 NM
SW...AND 240 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 11 TO 22
FT. .24 HOUR FORECAST LOW 54N171E 960 MB. FRONT TO EXTEND FROM
57N176E TO 53N169W TO 39N164W TO 32N169W. WITHIN 240 NM NE AND
300 NM SE QUADRANTS...AND WITHIN 180 NM NE OF THE FRONT N OF 54N
WINDS 40 TO 50 KT. SEAS 14 TO 30 FT. ELSEWHERE WITHIN 600 NM
NE...1620 NM SE...AND 360 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS
12 TO 25 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
52N168E DESCRIBED BELOW.

...HURRICANE FORCE WIND WARNING...
.12 HOUR FORECAST OVER FORECAST WATERS FROM 34N TO 40N W OF 162E
AREA OF S TO SW WINDS 30 TO 45 KT. SEAS 14 TO 18 FT.
.18 HOUR FORECAST FROM 34N TO 42N W OF 166E AREA OF SW WINDS 40
TO 55 KT. SEAS 18 TO 26 FT.
.24 HOUR FORECAST LOW W OF AREA 42N158E 969 MB. FRONT TO EXTEND
FROM 44N165E TO 32N155E. WITHIN 360 NM E OF THE FRONT WINDS 40
TO 55 KT. SEAS 18 TO 32 FT. ELSEWHERE WITHIN 840 NM E AND SE
QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 18 FT.
.30 HOUR FORECAST LOW 43N161E 965 MB. WITHIN 300 NM S QUADRANT
WINDS 50 TO 65 KT. SEAS 28 TO 40 FT.
.48 HOUR FORECAST LOW 52N168E 949 MB. FRONT TO EXTEND FROM LOW
CENTER TO 53N177E TO 42N180W TO 31N172E. WITHIN 540 NM SW...AND
BETWEEN 240 NM AND 480 NM NE AND 240 NM AND 480 NM SE
QUADRANTS...AND WITHIN 240 NM E OF THE FRONT N OF 35N WINDS 40
TO 55 KT. SEAS 22 TO 35 FT. ELSEWHERE WITHIN 780 NM NE...1380 NM
SE...AND 1320 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 29
FT...HIGHEST SE QUADRANT.

...GALE WARNING...
.LOW 36N139W 1001 MB MOVING NE 30 KT. OVER FORECAST WATERS
WITHIN 360 NM S AND 420 NM W QUADRANTS WINDS 25 TO 40 KT. SEAS
12 TO 24 FT.
.24 HOUR FORECAST LOW 41N126W 1000 MB. WITHIN 480 NM SE AND 540
NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 10 TO 18 FT.
.48 HOUR FORECAST LOW INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.LOW 41N130W 995 MB MOVING NE 40 KT. OVER FORECAST WATERS WITHIN
480 NM SE AND 600 NM S QUADRANTS WINDS 25 TO 35 KT. SEAS 11 TO
19 FT.
.24 HOUR FORECAST LOW INLAND AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.LOW W OF AREA 50N159E 980 MB MOVING E 10 KT. OVER FORECAST
WATERS WITHIN 960 NM SE QUADRANT WINDS 25 TO 35 KT. SEAS 14 TO
20 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
54N171E DESCRIBED ABOVE.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 40N152W 1016 MB. FROM 33N TO 57N
BETWEEN 147W AND 160W WINDS 25 TO 35 KT. SEAS 10 TO 19 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF A LINE FROM 57N159W TO 56N167W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N AND NE OF A
LINE FROM 59N173W TO 60N179W.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.BOGOSLOF VOLCANO AT 54N168W 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.

.LOW 61N148W 1002 MB NEARLY STATIONARY. WITHIN 180 NM SW
QUADRANT WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 60N146W 1006 MB. WITHIN 360 NM SW QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED. WITHIN AN AREA BOUNDED BY A
LINE FROM 57N142W TO 48N129W TO 49N141W TO 57N142W WINDS TO 25
KT. SEAS TO 9 FT.

.LOW 51N154W 1005 MB MOVING SE 25 KT. WITHIN 480 NM SW AND 300
NM W QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 46N141W 1013 MB. FROM 34N TO 46N BETWEEN
142W AND 149W WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 37N130W 1024 MB. WITHIN 360 NM W QUADRANT
WINDS TO 25 KT. SEAS TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM OVER FORECAST
WATERS FROM 34N TO 38N E OF 128W AND FROM 42N TO 49N BETWEEN
170W AND 180W.
.24 HOUR FORECAST DENSE FOG FROM 42N TO 50N BETWEEN 160W AND
166W AND FROM 41N TO 44N W OF 168E.
.48 HOUR FORECAST DENSE FOG FROM 43N TO 54N BETWEEN 171W AND
177E.

.HIGH 31N166W 1029 MB MOVING NE 25 KT.
.24 HOUR FORECAST HIGH 32N155W 1030 MB.
.48 HOUR FORECAST HIGH 34N142W 1032 MB.

.HIGH 56N166W 1021 MB MOVING NE 20 KT.
.24 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST NEW HIGH 53N153W 1020 MB.
.48 HOUR FORECAST HIGH 46N143W 1032 MB.

.24 HOUR FORECAST HIGH 33N179E 1025 MB.
.48 HOUR FORECAST HIGH 36N165W 1033 MB.

.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 0600 UTC MON FEB 20.
24 HOUR FORECAST VALID 0600 UTC TUE FEB 21.
48 HOUR FORECAST VALID 0600 UTC WED FEB 22.

.WARNINGS.

...GALE WARNING...
.42 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING
THE GULF OF TEHUANTEPEC...N WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT.
.48 HOUR FORECAST N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING
THE GULF OF TEHUANTEPEC...N WINDS 30 TO 35 KT. SEAS TO 9 FT.
ELSEWHERE N OF 14N BETWEEN 94W AND 96W N TO NE WINDS 20 TO 30 KT
SEAS 8 FT.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N135W TO 27N140W. N OF 28N WITHIN 120 NM SE
OF FRONT SW WINDS 20 TO 25 KT. SEAS 10 TO 13 FT IN NW SWELL. W
OF FRONT W TO NW WINDS 20 TO 30 KT. SEAS 14 TO 16 FT IN NW
SWELL. ELSEWHERE NW OF A LINE FROM 30N125W TO 24N140W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST DISSIPATING COLD FRONT FROM 30N128W TO 23N134W
THEN STATIONARY TO 21N140W. NW OF LINE FROM 30N117W TO 19N140W
WINDS 20 KT OR LESS. SEAS 8 TO 17 FT IN NW SWELL...HIGHEST W OF
FRONT.
.48 HOUR FORECAST COLD FRONT DISSIPATED. W OF A LINE FROM
30N116W TO 23N116W TO 09N123W WINDS 20 KT OR LESS. SEAS 8 TO 11
FT IN NW SWELL...MIXED WITH NE SWELL S OF 20N.

.FROM 18N TO 26N BETWEEN 110W AND 120W WINDS 20 KT OR LESS. SEAS
12 TO 14 FT PRIMARILY IN NW SWELL. ELSEWHERE WITHIN AREA BOUNDED
BY 30N126W TO 30N116W TO 20N106W TO 08N123W TO 13N137W TO
20N137W TO 30N126W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT
PRIMARILY IN NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 17N127W TO 23N112W TO
15N101W TO 05N110W TO 07N127W TO 17N127W WINDS 20 KT OR LESS.
SEAS 8 TO 9 FT PRIMARILY IN NW SWELL. FROM 08N TO 16N W OF 127W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NW AND NE SWELL.
.48 HOUR FORECAST CONDITIONS MERGED ABOVE.

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

CONVECTION VALID AT 0900 UTC MON FEB 20...

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 09N115W TO BEYOND 02N140W. NO SIGNIFICANT CONVECTION.

$$

.FORECASTER AL. NATIONAL HURRICANE CENTER.



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