High Seas Forecast
Issued by NWS

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000
FZPN01 KWBC 230952
HSFEP1

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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

.WARNINGS.

...STORM WARNING...
.LOW 37N168E 966 MB MOVING NE 25 KT. OVER FORECAST WATERS WITHIN
480 NM S AND SW QUADRANTS WINDS 40 TO 55 KT. SEAS 24 TO 49 FT.
ELSEWHERE WITHIN 720 NM SE AND S SEMICIRCLES...480 NM W
QUADRANT...AND BETWEEN 240 NM AND 540 NM N QUADRANT WINDS 30 TO
45 KT. SEAS 12 TO 34 FT.
.24 HOUR FORECAST LOW 44N176E 962 MB. WITHIN 600 NM S AND SW
QUADRANTS WINDS 40 TO 50 KT. SEAS 22 TO 40 FT. ELSEWHERE WITHIN
840 NM S AND SE SEMICIRCLES...660 NM W QUADRANT...AND BETWEEN
180 NM AND 660 NM N QUADRANT WINDS 30 TO 45 KT. SEAS 12 TO 34
FT.
.48 HOUR FORECAST LOW 47N177E 969 MB. WITHIN 600 NM S AND 420 NM
SW QUADRANTS WINDS 40 TO 50 KT. SEAS 20 TO 38 FT. ELSEWHERE
WITHIN 780 NM N SEMICIRCLE...840 NM S AND SE QUADRANTS...AND 540
NM S QUADRANT WINDS 25 TO 40 KT. SEAS 10 TO 28 FT. ELSEWHERE
WITHIN 180 NM E AND NE OF A FRONT FROM 49N163W TO 46N155W TO
42N150W TO 37N154W TO 32N161W WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.

...GALE WARNING...
.COMPLEX LOW WITH FIRST CENTER 44N152W 993 MB MOVING E 20 KT AND
SECOND CENTER 44N140W 989 MB MOVING NE 20 KT. WITHIN 480 NM S
AND SW QUADRANTS OF FIRST CENTER...240 NM S AND SE QUADRANTS OF
SECOND CENTER...AND 180 NM E OF A FRONT FROM 44N136W TO 38N137W
TO 34N142W WINDS 25 TO 40 KT. SEAS 10 TO 24 FT. ELSEWHERE WITHIN
300 NM N AND NW QUADRANTS OF FIRST CENTER AND 120 NM N
SEMICIRCLE OF SECOND CENTER WINDS 20 TO 30 KT. SEAS 8 TO 16 FT.
.18 HOUR FORECAST LOW 46N134W 988 MB. WITHIN 240 NM S AND SW
QUADRANTS AND 120 NM E OF A FRONT FROM 50N131W TO 46N128W TO
41N128W TO 35N133W WINDS 30 TO 45 KT. SEAS 10 TO 17 FT.
.24 HOUR FORECAST LOW 47N133W 990 MB. WITHIN 300 NM SW QUADRANT
AND 120 NM E OF A FRONT FROM 51N132W TO 47N127W TO 43N126W TO
38N128W TO 32N134W WINDS 25 TO 35 KT. SEAS 10 TO 15 FT.
ELSEWHERE WITHIN 240 NM E...360 NM S...AND 420 NM W
QUADRANTS...AND FROM 34N TO 39N BETWEEN 133W AND 145W WINDS 20
TO 30 KT. SEAS 8 TO 17 FT.
.48 HOUR FORECAST 53N131W 998 MB. WITHIN 240 NM S AND SW
QUADRANTS WINDS 25 TO 35 KT. SEAS 8 TO 14 FT.

...GALE WARNING...
.48 HOUR FORECAST LOW 38N168E 995 MB. OVER FORECAST WATERS
WITHIN 420 NM SE AND 540 NM S AND SW QUADRANTS WINDS 25 TO 40
KT. SEAS 11 TO 20 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 52N133W 1001 MB MOVING NE 10 KT. WITHIN 240 NM S AND SE
QUADRANTS WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DIMINISHED.

.LOW NW OF AREA 54N164E 1003 MB MOVING N 05 KT. WITHIN 180 NM N
AND NE OF A LINE FROM 56N173E TO 53N179E WINDS TO 25 KT. SEAS TO
9 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS NW OF AREA.

.LOW 55N146W 1000 MB MOVING SE 10 KT. WITHIN 180 NM SW
SEMICIRCLE AND 120 NM W OF A LINE FROM LOW CENTER TO 57N148W TO
59N150W WINDS TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 53N142W 1004 MB. WITHIN 180 NM SW QUADRANT
WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DIMINISHED.

.FROM 31N TO 34N BETWEEN 118W AND 121W NW WINDS 20 TO 30 KT.
SEAS TO 10 FT.
.24 HOUR FORECAST FROM 31N TO 34N BETWEEN 118W AND 121W NW WINDS
TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY E OF A LINE
FROM 56N167W TO 58N174W TO 60N177W.
.48 HOUR FORECAST LITTLE CHANGE.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 30N TO 35N
BETWEEN 180W AND 176E.
.24 HOUR FORECAST DENSE FOG FROM 30N TO 43N BETWEEN 163W AND
173W AND FROM 43N TO 46N BETWEEN 173W AND 171E.
.48 HOUR FORECAST DENSE FOG FROM 31N TO 48N BETWEEN 148W AND
160W AND FROM 47N TO 50N BETWEEN 166W AND 177E.

.HIGH 61N172W 1022 MB NEARLY STATIONARY.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST HIGH DISSIPATED.

.HIGH 31N163W 1022 MB MOVING E 15 KT.
.24 HOUR FORECAST HIGH 32N152W 1025 MB.
.48 HOUR FORECAST HIGH 31N143W 1028 MB.

.FORECASTER ACHORN. 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 MAR 23.
24 HOUR FORECAST VALID 0600 UTC FRI MAR 24.
48 HOUR FORECAST VALID 0600 UTC SAT MAR 25.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N114W TO 20N128W. WITHIN AREA BOUNDED BY
30N130W TO 30N118W TO 16N132W TO 15N140W TO 19N140W TO 30N130W
WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL. FROM 21N TO 26N
BETWEEN THE BAJA CALIFORNIA PENINSULA AND 112.5W NW TO N WINDS
20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST COLD FRONT DISSIPATED. WITHIN 120 NM OFF THE
BAJA CALIFORNIA PENINSULA N TO NW WINDS 20 TO 25 KT. SEAS 8 TO 9
FT. CONDITIONS MERGE ELSEWHERE.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.FROM 07N TO 16N W OF 119W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO
9 FT.
.24 HOUR FORECAST FROM 07N TO 11N W OF 130W N TO NE WINDS 20 TO
25 KT. SEAS 9 TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY A LINE
FROM 26N120W TO 17N140W AND A LINE FROM 20N110W TO 03N125W TO
05N140W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW
SWELL.
.48 HOUR FORECAST FROM 03N TO 20N W OF 116W NE WINDS 20 KT OR
LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.

.N OF 15N BETWEEN 94.5W AND 95.5W...INCLUDING THE GULF OF
TEHUANTEPEC...N WINDS 20 TO 30 KT. SEAS 8 TO 9 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 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.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.GULF OF CALIFORNIA COLD FRONT FROM 32N112W TO 29N114W. S OF
FRONT TO 29N SW TO W WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. N
OF FRONT N TO NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.06 HOUR FORECAST GULF OF CALIFORNIA COLD FRONT DIFFUSE. N OF
26N N TO NW WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST GULF OF CALIFORNIA FROM 21N TO 24N N TO NW
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST GULF OF CALIFORNIA WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.FROM 10N TO 11.5N E OF 88W...INCLUDING THE GULF OF
PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS BUILDING TO 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 10.5N TO 11.5N E OF 88W...INCLUDING THE
GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS BUILDING TO 8
FT.
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FROM FROM 10.5N TO 11.5N E OF 87W...INCLUDING
THE GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT.

.36 HOUR FORECAST COLD FRONT 30N132W TO 29N140W. W OF A LINE
FROM 30N138W TO 29N140W WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 30N128W TO 28N140W. W OF A
LINE FROM 30N132W TO 24N140W WINDS 20 KT OR LESS. SEAS 8 TO 10
FT IN NW SWELL.

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

CONVECTION VALID AT 0815 UTC THU MAR 23...

.TROUGH FROM 04N90W TO 02N97W...SCATTERED MODERATE WITHIN 60
NM EITHER SIDE OF TROUGH AXIS.

.TROUGH S OF AREA...SCATTERED MODERATE ISOLATED STRONG S OF 02N
BETWEEN 107W AND 120W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
TROUGH AXIS EXTENDS FROM 05N112W TO 03N125W. ITCZ S OF THE AREA.
NO SIGNIFICANT CONVECTION.

$$
.FORECASTER NR. NATIONAL HURRICANE CENTER.


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