High Seas Forecast
Issued by NWS

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837
FZPN01 KWBC 240405
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC FRI MAR 24 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC MAR 24.
24 HOUR FORECAST VALID 0000 UTC MAR 25.
48 HOUR FORECAST VALID 0000 UTC MAR 26.

.WARNINGS.

...STORM WARNING...
.LOW 43N177E 963 MB MOVING N 10 KT WILL TURN NW AFTER 24 HOURS.
BETWEEN 120 NM AND 480 NM S AND SW QUADRANTS WINDS 40 TO 55 KT.
SEAS 22 TO 40 FT. ELSEWHERE FROM 30N TO 53N BETWEEN 160E AND 164W
WINDS 30 TO 45 KT. SEAS 10 TO 36 FT...HIGHEST NEAR 35N176E.
.24 HOUR FORECAST LOW 47N176E 965 MB. BETWEEN 120 NM AND 540 NM S
QUADRANT WINDS 40 TO 55 KT. SEAS 20 TO 40 FT. ELSEWHERE OVER
FORECAST WATERS N OF 30N WITHIN 1140 NM E AND NE...1560 NM
SE...720 NM SW...AND 660 NM NW QUADRANTS WINDS 25 TO 40 KT. SEAS
10 TO 35 FT...HIGHEST SE QUADRANT.
.48 HOUR FORECAST LOW 49N174E 972 MB. OVER FORECAST WATERS WITHIN
780 NM E AND NE...960 NM S...780 NM W AND SW...AND 540 NM NW
QUADRANTS WINDS 30 TO 45 KT. SEAS 12 TO 24 FT.

...STORM WARNING...
.24 HOUR FORECAST LOW 36N162E 999 MB. OVER FORECAST WATERS N OF
30N WITHIN 360 NM SE AND 420 NM S AND SW QUADRANTS WINDS 25 TO 40
KT. SEAS 9 TO 18 FT.
.36 HOUR FORECAST LOW 40N173E 987 MB. WITHIN 300 NM SE AND 240 NM
SW QUADRANTS WINDS 40 TO 50 KT. SEAS 12 TO 24 FT.
.48 HOUR FORECAST LOW 45N176W 979 MB. WITHIN 300 NM S AND SE
QUADRANTS WINDS 40 TO 50 KT. SEAS 18 TO 30 FT. ELSEWHERE WITHIN
240 NM E AND NE...AND 660 NM S AND SE QUADRANTS WINDS 25 TO 40
KT. SEAS 11 TO 22 FT.

...GALE WARNING...
.LOW 47N135W 988 MB MOVING NE 15 KT. FRONT EXTENDS FROM 50N133W
TO 48N128W TO 40N129W TO 30N145W. WITHIN 300 NM E OF FRONT S OF
40N...WITHIN 180 NM E AND NE OF FRONT N OF 40N...AND WITHIN 180
NM W AND SW SEMICIRCLES WINDS 30 TO 45 KT. SEAS 9 TO 16 FT.
ELSEWHERE BETWEEN 300 NM AND 900 NM SW QUADRANT WINDS 20 TO 30
KT. SEAS 10 TO 20 FT.
.24 HOUR FORECAST COMPLEX LOW WITH MEAN CENTER 52N131W 994 MB.
OVER FORECAST WATERS WITHIN 120 NM NE AND 240 NM SW SEMICIRCLES
WINDS 25 TO 35 KT. SEAS 9 TO 16 FT. ELSEWHERE OVER FORECAST
WATERS WITHIN 180 NM NE AND 360 NM SW SEMICIRCLES WINDS 20 TO 30
KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW DISSIPATED INLAND. CONDITIONS DESCRIBED
WITH LOW 49N145W BELOW.

...GALE WARNING...
.36 HOUR FORECAST NEW LOW 48N151W 991 MB. WITHIN 180 NM NE...780
NM S AND SE...AND 600 NM SW QUADRANTS WINDS 25 TO 35 KT. SEAS 8
TO 15 FT.
.48 HOUR FORECAST LOW 49N145W 990 MB. FRONT TO EXTEND FROM LOW
CENTER TO 48N139W TO 41N138W TO 33N146W. WITHIN 240 NM E AND NE
OF FRONT...AND WITHIN 300 NM SE AND 840 NM SW QUADRANTS WINDS 25
TO 40 KT. SEAS 10 TO 20 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER ICE FREE FORECAST WATERS
N OF 58N BETWEEN 150W AND 153W. ELSEWHERE LIGHT TO MODERATE
FREEZING SPRAY N OF A LINE FROM 55N162W TO 60N178W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 57N169W TO 60N178W.
.48 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF A LINE
FROM 56N163W TO 60N178W.

.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 59N146W 1004 MB NEARLY STATIONARY. FROM 55N TO 60N BETWEEN
148W AND 157W NW WINDS 20 TO 30 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW 58N147W 1006 MB. BETWEEN 120 NM AND 240 NM
W AND SW QUADRANTS NW WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LOW 59N145W 1002 MB. WINDS LESS THAN 25 KT.
SEAS LESS THAN 8 FT.

.LOW 58N140W 1002 MB NEARLY STATIONARY. WINDS LESS THAN 25 KT.
SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LOW 57N141W 1001 MB. WITHIN 120 NM SW
SEMICIRCLE WINDS TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.

.LOW 55N143W 1003 MB DRIFTING SE. WITHIN 420 NM S AND SW...AND
120 NM NW QUADRANTS WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH
COMPLEX LOW 52N131W IN WARNINGS SECTION ABOVE.

.FROM 30N TO 35N E OF 122W NW WINDS TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.
.48 HOUR FORECAST FROM 30N TO 36N E OF 122W NW WINDS TO 25 KT.
SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 30N TO 43N
BETWEEN 165W AND 175W AND FROM 42N TO 46N BETWEEN 175W AND 171E.
.24 HOUR FORECAST DENSE FOG FROM 30N TO 47N BETWEEN 152W AND 164W
AND FROM 46N TO 50N BETWEEN 164W AND 177E.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM OF 36N144W AND 43N172W
AND WITHIN 120 NM OF 51N172W.

.HIGH 32N156W 1023 MB MOVING E 20 KT.
.24 HOUR FORECAST HIGH 31N144W 1026 MB.
.48 HOUR FORECAST HIGH 31N133W 1025 MB.

.HIGH 46N158W 1019 MB MOVING SE 25 KT.
.24 HOUR FORECAST HIGH 39N141W 1022 MB.
.48 HOUR FORECAST HIGH 38N126W 1023 MB.

.HIGH 61N169W 1023 MB NEARLY STATIONARY.
.24 HOUR FORECAST HIGH DISSIPATED.

.48 HOUR FORECAST HIGH 33N161W 1026 MB.

.FORECASTER MILLS. 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 0000 UTC FRI MAR 24.
24 HOUR FORECAST VALID 0000 UTC SAT MAR 25.
48 HOUR FORECAST VALID 0000 UTC SUN MAR 26.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT APPROACHING 30N140W. WITHIN AREA BOUNDED BY
29.5N139W TO 29.5N140W TO 30N140W TO 30N138W TO 29.5N139W WINDS
20 KT OR LESS. SEAS 8 TO 9 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N132W TO 28N140W. WITHIN
AREA BOUNDED BY 29N135W TO 26N140W TO 30N140W TO 30N129W TO
29N135W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NW SWELL.
.48 HOUR FORECAST DISSIPATING COLD FRONT FROM 30N118W TO 28N130W
TO 26N140W. WITHIN AREA BOUNDED BY 25N130W TO 20N128W TO
20N140W TO 28N140W TO 30N138W TO 30N124W TO 25N130W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN NW SWELL.

.GULF OF CALIFORNIA S OF 27N NW TO N WINDS 20 TO 25 KT. SEAS TO
8 FT.
.24 HOUR FORECAST GULF OF CALIFORNIA FROM 26N TO 28N WITHIN 30
NM W OF MAINLAND MEXICO NW WINDS 20 TO 25 KT. SEAS LESS THAN 8
FT.
.30 HOUR FORECAST GULF OF CALIFORNIA WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.WITHIN AREA BOUNDED BY 13N116W TO 08N140W TO 13N139W TO 17N123W
TO 30N116W TO 24N111W TO 13N116W N TO NE WINDS 20 TO 25 KT. SEAS
8 TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY 03N124W TO 05N140W
TO 21N140W TO 29N114W TO 21N109W TO 03N124W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST WITHIN AREA BOUNDED BY 09N135W TO 08N136W TO
08N140W TO 12N140W TO 12N135W TO 09N135W NE WINDS 20 TO 25 KT.
SEAS 9 TO 10 FT. ELSEWHERE WITHIN AREA BOUNDED BY 03N120W TO
04N140W TO 10N135W TO 20N140W TO 21N112W TO 03N120W WINDS 20 KT
OR LESS. SEAS 8 TO 9 FT IN MIXED NE AND NW SWELL.
.48 HOUR FORECAST WITHIN AREA BOUNDED BY 10N119W TO 03N128W TO
03N140W TO 20N140W TO 18N123W TO 10N119W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.

.03 HOUR FORECAST GULF OF TEHUANTEPEC N OF 15N BETWEEN 94.5W AND
95.5W N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.06 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.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.48 HOUR FORECAST N OF 28N WITHIN 90 NM W OF BAJA CALIFORNIA
PENINSULA...INCLUDING SEBASTIAN VIZCAINO BAY...NW WINDS 20 TO 25
KT. SEAS TO 8 FT.

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

CONVECTION VALID AT 0200 UTC FRI MAR 24...

.SCATTERED MODERATE FROM 03N TO 07N E OF 79W.

$$
.FORECASTER LEWITSKY. NATIONAL HURRICANE CENTER.



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