High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 231136 CCB
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC THU FEB 23 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC FEB 23.
24 HOUR FORECAST VALID 0600 UTC FEB 24.
48 HOUR FORECAST VALID 0600 UTC FEB 25.

.WARNINGS.

...STORM WARNING...
.LOW 55N170E 959 MB MOVING NE 15 KT. FRONT EXTENDS FROM 62N175W
TO 50N170W TO 40N170W TO 30N175W. OVER FORECAST WATERS BETWEEN
60 NM AND 240 NM S AND SW QUADRANTS WINDS 40 TO 55 KT. SEAS 21
TO 32 FT. ELSEWHERE WITHIN 540 NM SW AND S AND 420 NM E
QUADRANTS WINDS 25 TO 40 KT. SEAS 17 TO 26 FT. ELSEWHERE N OF A
LINE FROM 41N160E TO 36N174W WINDS 20 TO 30 KT. SEAS 12 TO 22
FT.
.24 HOUR FORECAST LOW NW OF AREA NEAR 60N177E 983 MB. WITHIN 300
NM S AND SE QUADRANTS WINDS 30 TO 45 KT. SEAS 14 TO 25 FT.
ELSEWHERE EXCEPT WHERE NOTED WITH LOW 48N159E BELOW...WITHIN 660
NM SE SEMICIRCLE WINDS 20 TO 30 KT. SEAS IN ICE FREE WATERS 9 TO
19 FT.
.48 HOUR FORECAST LOW N OF AREA.

...STORM WARNING...
.12 HOUR FORECAST LOW W OF AREA NEAR 44N152E 981 MB. OVER
FORECAST WATERS W OF A LINE FROM 45N164E TO 35N160E AREA OF S
WINDS 25 TO 40 KT. SEAS 12 TO 16 FT.
.24 HOUR FORECAST LOW W OF AREA NEAR 48N159E 974 MB. FRONT TO
EXTEND FROM 50N163E TO 40N161E TO 38N160E. WITHIN 240 NM E OF
FRONT FROM 40N TO 49N WINDS 40 TO 50 KT. SEAS 16 TO 27 FT.
ELSEWHERE W OF A LINE FROM 52N170E TO 50N172E TO 45N172E TO
34N162E WINDS 25 TO 40 KT. SEAS 11 TO 24 FT.
.48 HOUR FORECAST LOW NW OF AREA NEAR 58N169E 972 MB. FRONT TO
EXTEND FROM 60N179E TO 50N179E TO 40N170E TO 36N165E. FROM 51N
TO 56N BETWEEN 178E AND 168E WINDS 40 TO 50 KT. SEAS 22 TO 32
FT. ALSO WITHIN 720 NM E AND 540 NM S QUADRANTS WINDS 30 TO 45
KT. SEAS IN ICE FREE WATERS 13 TO 26 FT. ELSEWHERE N OF A LINE
FROM 48N160E TO 46N175W TO 56N164W AND WITHIN 300 NM E OF FRONT
WINDS 20 TO 30 KT. SEAS 9 TO 19 FT.

...STORM WARNING...
.LOW 49N171W 1002 MB MOVING N 40 KT. FRONT EXTENDS FROM 62N173W
TO 59N170W TO LOW CENTER TO 40N170W TO 30N176W. WITHIN 180 NM E
OF FRONT FROM 40N TO 50N WINDS 35 TO 50 KT. SEAS 14 TO 26 FT.
ALSO WITHIN 300 NM NE AND E OF FRONT N OF 41N AND WITHIN 240 NM
E OF FRONT FROM 35N TO 41N WINDS 25 TO 40 KT. SEAS 11 TO 21 FT.
.24 HOUR FORECAST LOW 65N170W 998 MB. ASSOCIATED CONDITIONS
INCLUDED WITH LOW 60N177E DESCRIBED ABOVE.
.48 HOUR FORECAST LOW N OF AREA.

...GALE WARNING...
.COMPLEX LOW WITH MAIN LOW 35N155W 1022 MB MOVING SE 15 KT AND A
SECOND LOW 34N150W 1023 MB MOVING NE 10 KT THEN TURNING NW IN 12
HOURS. WITHIN 120 NM NE OF A FRONT FROM 39N150W TO 34N146W WINDS
25 TO 35 KT. SEAS 10 TO 18 FT. ELSEWHERE WITHIN 240 NM SW AND W
QUADRANTS OF MAIN LOW AND BETWEEN 300 NM AND 480 NM NE
SEMICIRCLE OF SECOND LOW WINDS 20 TO 30 KT. SEAS 9 TO 16 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MAIN LOW 31N149W 1016 MB AND
SECOND LOW 36N149W 1015 MB. WITHIN 300 NM NE AND N QUADRANTS OF
SECOND LOW WINDS 25 TO 35 KT. SEAS 11 TO 14 FT. ELSEWHERE FROM
30N TO 43N BETWEEN 149W AND 156W AND WITHIN 360 NM NE AND 540 NM
E QUADRANTS OF SECOND LOW WINDS TO 25 KT. SEAS TO 12 FT.
.48 HOUR FORECAST LOW 35N145W 1006 MB. WITHIN 360 NM N
SEMICIRCLE WINDS 30 TO 45 KT. SEAS 12 TO 22 FT.

...GALE WARNING...
.24 HOUR FORECAST NEW LOW 39N163W 1023 MB. FRONT TO EXTEND FROM
57N159W TO 50N164W TO LOW CENTER TO 30N168W. BETWEEN THE FRONT
AND A LINE FROM 49N164W 30N178E AND 240 NM E OF FRONT N OF 38N
WINDS 20 TO 30 KT. SEAS 9 TO 17 FT.
.48 HOUR FORECAST LOW 35N162W 1016 MB. WITHIN 240 NM N AND NW
QUADRANTS WINDS 25 TO 35 KT. SEAS 11 TO 16 FT.

...GALE WARNING...
.36 HOUR FORECAST OVER FORECAST WATERS N OF A LINE FROM 52N159W
TO 57N144W AREA OF SW WINDS TO 25 KT. SEAS TO 11 FT.
.48 HOUR FORECAST NEW LOW 60N145W 1021 MB. WITHIN 240 NM SW
QUADRANT WINDS 25 TO 40 KT. SEAS TO 12 FT.

.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.

.LOW 57N142W 1023 MB MOVING SE 35 KT. WITHIN 540 NM S AND 240 NM
SW QUADRANTS WINDS TO 25 KT. SEAS 8 TO 13 FT.
.24 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.E OF A LINE FROM 45N133W TO 30N123W AREA OF NW WINDS 20 TO 30
KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST E OF A LINE FROM 38N127W TO 30N122W AREA OF NW
WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST NEW LOW 51N128W 1021 MB. WITHIN 240 NM SW AND
420 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 44N126W 1018 MB. E OF A LINE FROM 50N140W
TO 40N133W AND W OF 126W WINDS 20 TO 30 KT. SEAS TO 11 FT.

.48 HOUR FORECAST LOW W OF AREA 32N159E 1014 MB. OVER FORECAST
WATERS W OF A LINE FROM 35N170E TO 30N161E WINDS 20 TO 30 KT.
SEAS 8 TO 13 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 36N TO 51N
BETWEEN 168W AND 171W AND OVER FORECAST WATERS N OF A LINE FROM
56N168W TO 61N178W.
.24 HOUR FORECAST DENSE FOG FROM 46N TO 54N BETWEEN 155W AND
162W AND FROM 40N TO 49N BETWEEN 170E AND 161E.
.48 HOUR FORECAST DENSE FOG N OF 59N W OF 170W AND WITHIN 180 NM
E OF A LINE FROM 50N179E TO 40N170E.

.HIGH 45N144W 1041 MB MOVING NW 15 KT.
.24 HOUR FORECAST HIGH 51N150W 1040 MB.
.48 HOUR FORECAST HIGH 51N152W 1043 MB.

.HIGH 34N162W 1031 MB DRIFTING SE.
.24 HOUR FORECAST HIGH 32N160W 1026 MB.
.48 HOUR FORECAST HIGH S OF AREA.

.HIGH 32N166E 1028 MB MOVING NE 35 KT.
.24 HOUR FORECAST HIGH 39N180W 1034 MB.
.48 HOUR FORECAST HIGH 52N163W 1042 MB.

.48 HOUR FORECAST NEW HIGH 36N128W 1027 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 THU FEB 23.
24 HOUR FORECAST VALID 0600 UTC FRI FEB 24.
48 HOUR FORECAST VALID 0600 UTC SAT FEB 25.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.N OF 26N BETWEEN 113.5W AND 119W NW TO N WINDS 20 TO 30 KT.
SEAS 8 TO 11 FT. FROM 22N TO 25N W OF 134W NE WINDS 20 TO 25 KT.
SEAS 9 TO 11 FT. ELSEWHERE N OF LINE 05N140W TO 07N127W TO
23N112W...EXCEPT N OF 25N W OF 130W...WINDS 20 KT OR LESS. SEAS
8 TO 10 FT IN MIXED NW AND NE SWELL.
.24 HOUR FORECAST N OF 27N E OF 118W NW TO N WINDS 20 TO 25 KT.
SEAS 8 TO 10 FT. ELSEWHERE N OF 16N BETWEEN 110W AND 128W WINDS
20 KT OR LESS. SEAS 8 TO 9 FT IN MIXED NW AND NE SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N138W TO 28N140W. N OF 27N E
OF FRONT TO 135W S WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. ELSEWHERE
W OF LINE FROM 30N131W TO 19N138W WINDS 20 KT OR LESS. SEAS 8 TO
9 FT IN NW SWELL.

.GULF OF CALIFORNIA N OF 30N NW TO N WINDS 20 TO 25 KT. SEAS
LESS THAN 8 FT.
.18 HOUR FORECAST GULF OF CALIFORNIA 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 0900 UTC THU FEB 23...

.SURFACE TROUGH FROM 06N86W TO 01N100W. SCATTERED MODERATE
WITHIN 60 NM S OF TROUGH BETWEEN 86W AND 90W. SCATTERED MODERATE
WITHIN 60 NM N OF TROUGH BETWEEN 98W AND 100W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...

THERE IS NO ITCZ OVER THE FORECAST WATERS NORTH OF THE EQUATOR.
NO SIGNIFICANT CONVECTION.

$$

.FORECASTER AL. NATIONAL HURRICANE CENTER.



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