High Seas Forecast
Issued by NWS

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120
FZPN01 KWBC 190934
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC SUN FEB 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 19.
24 HOUR FORECAST VALID 0600 UTC FEB 20.
48 HOUR FORECAST VALID 0600 UTC FEB 21.

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW JUST W OF AREA 37N159E 994 MB MOVING NE 45 KT AND RAPIDLY
INTENSIFYING. OVER FORECAST WATERS WITHIN 240 NM SE SEMICIRCLE
WINDS 40 TO 55 KT. SEAS 20 TO 26 FT. ELSEWHERE WITHIN 1380 NM E
AND 540 NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS 19 TO 21 FT.
.24 HOUR FORECAST LOW 49N175E 955 MB. WITHIN 120 NM SW
SEMICIRCLE WINDS 55 TO 70 KT. SEAS 20 TO 34 FT. ELSEWHERE WITHIN
240 NM S SEMICIRCLE AND 360 NM NE QUADRANT WINDS 40 TO 55 KT.
SEAS 16 TO 26 FT. ALSO WITHIN 540 NM NE...1080 NM SE...1020 NM
SW...AND 180 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 25
FT.
.48 HOUR FORECAST LOW 55N175E 958 MB. FRONT TO EXTEND FROM LOW
CENTER TO 57N180W TO 53N169W TO 40N164W TO 32N168W. WITHIN 420
NM NE AND 240 NM SE QUADRANTS WINDS 40 TO 55 KT. SEAS 18 TO 34
FT. ELSEWHERE WITHIN 660 NM NE AND 600 M SE QUADRANTS...AND 300
NM EITHER SIDE OF THE FRONT S OF 54N WINDS 25 TO 40 KT. SEAS 12
TO 25 FT.

...STORM WARNING...
.LOW 36N156W 997 MB MOVING NE 50 KT. WITHIN 240 NM S AND 300 NM
SW QUADRANTS WINDS 40 TO 50 KT. SEAS 20 TO 29 FT. ELSEWHERE OVER
FORECAST WATERS WITHIN 180 NM NE...780 NM SE...540 NM SW...AND
660 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 22 FT.
.24 HOUR FORECAST LOW 41N131W 991 MB. WITHIN 600 NM SE...1140 NM
SW...AND 660 NM W QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 24
FT...HIGHEST SW QUADRANT.
.48 HOUR FORECAST LOW INLAND. FROM 32N TO 41N E OF 139W WINDS 20
TO 30 KT. SEAS 10 TO 16 FT.

...STORM WARNING...
.48 HOUR FORECAST LOW 45N164E 969 MB. FRONT TO EXTEND FROM LOW
CENTER TO 36N160E. WITHIN 300 NM E OF THE FRONT WINDS 45 TO 60
KT. SEAS 24 TO 36 FT. ELSEWHERE OVER FORECAST WATERS W OF A LINE
FROM 46N176E TO 38N175E TO 30N163E WINDS 30 TO 45 KT. SEAS 12 TO
24 FT.

...GALE WARNING...
.LOW 45N140W 988 MB MOVING E 20 KT. WITHIN 120 NM N SEMICIRCLE
AND 840 NM SE AND 360 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 10
TO 25 FT...HIGHEST NEAR 42N140W.
.24 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

...GALE WARNING...
.FRONT EXTENDS FROM 54N169E TO 49N179E. OVER FORECAST WATERS
BETWEEN THE FRONT AND 55N AREA OF SE WINDS 25 TO 35 KT. SEAS 8
TO 13 FT.
.24 HOUR FORECAST CONDITIONS ABSORBED BY LOW 49N175E DESCRIBED
ABOVE.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N AND NE OF A LINE FROM 57N160W TO 57N170W TO 61N177W.
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY NE OF A LINE
FROM 54N161W TO 59N179E.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N AND NE OF A
LINE FROM 58N172W TO 60N179W.

.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.

.OVER FORECAST WATERS FROM 30N TO 36N E OF 124W AREA OF NW WINDS
20 TO 30 KT. SEAS 12 TO 20 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 51N163W 1005 MB MOVING NE 20 KT. WITHIN 180 NM N AND NW
QUADRANTS WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 52N151W 1007 MB. WITHIN 540 NM SW AND 360
NM W QUADRANTS WINDS TO 25 KT. SEAS 10 TO 13 FT.
.48 HOUR FORECAST LOW DISSIPATED AND ASSOCIATED CONDITIONS
DIMINISHED.

.48 HOUR FORECAST LOW 60N148W 1007 MB. WITHIN 360 NM S AND SW
QUADRANTS WINDS 20 TO 30 KT. SEAS TO 9 FT.

.DENSE FOG. 24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
FROM 34N TO 39N BETWEEN 122W AND 128W AND WITHIN AN AREA BOUNDED
BY A LINE FROM 49N179W TO 42N168W TO 43N177W TO 49N179W.
.48 HOUR FORECAST DENSE FOG FROM 42N TO 50N BETWEEN 160W AND
165W AND FROM 41N TO 45N BETWEEN 170E AND 164E.

.HIGH 30N176W 1029 MB MOVING E 20 KT.
.24 HOUR FORECAST HIGH 31N166W 1029 MB.
.48 HOUR FORECAST HIGH 31N155W 1030 MB.

.HIGH 58N176W 1018 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH 56N167W 1020 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST HIGH 34N180W 1026 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 SUN FEB 19.
24 HOUR FORECAST VALID 0600 UTC MON FEB 20.
48 HOUR FORECAST VALID 0600 UTC TUE FEB 21.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 24N110W TO 17N120W. N OF 26N E OF 120W NW WINDS
20 TO 25 KT. SEAS 16 TO 20 FT IN NW SWELL. ELSEWHERE N OF LINE
FROM 20N110W TO 15N120W TO 15N140W WINDS 20 KT OR LESS. SEAS 8
TO 16 FT IN NW SWELL...HIGHEST NE.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 30N122W TO 30N116W TO
20N105W TO 18N105W TO 09N116W TO 09N128W TO 13N137W TO 18N137W
TO 30N122W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 14N140W TO 24N112W TO
15N101W TO 04N111W TO 11N140W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT PRIMARILY IN NW SWELL.

.06 HOUR FORECAST NW OF LINE 30N133W TO 28N140W SW WINDS 20 TO
25 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST COLD FRONT FROM 30N135W TO 26N140W. W OF FRONT
W WINDS 20 TO 30 KT. SEAS 12 TO 18 FT IN NW SWELL. SE OF FRONT
TO LINE 25N140W TO 30N130W SW WINDS 20 TO 25 KT. SEAS 8 TO 12
FT. ELSEWHERE NW OF LINE 30N125W TO 24N140W WINDS 20 KT OR
LESS. SEAS 8 TO 9 FT IN NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N126W TO 22N140W. W OF FRONT
WINDS 20 KT OR LESS. SEAS 11 TO 16 FT IN NW SWELL. ELSEWHERE NW
OF LINE FROM 30N117W TO 18N140W WINDS 20 KT OR LESS. SEAS 8 TO
11 FT IN NW SWELL.

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

CONVECTION VALID AT 0900 UTC SUN FEB 19...

.SCATTERED MODERATE ISOLATED STRONG WITHIN 60 NM OF LINE 21N107W
TO 13N112W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 06N86W TO 06N105W. IT RESUMES FROM 08.5N118W TO
01N140W. NO SIGNIFICANT CONVECTION.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.



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