High Seas Forecast
Issued by NWS

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505
FZPN01 KWBC 270352
HSFEP1

HIGH SEAS FORECAST
NWS OCEAN PREDICTION CENTER WASHINGTON DC
0430 UTC MON FEB 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 FEB 27.
24 HOUR FORECAST VALID 0000 UTC FEB 28.
48 HOUR FORECAST VALID 0000 UTC MAR 01.

.WARNINGS.

...STORM WARNING...
.LOW W OF AREA 43N159E 1006 MB MOVING NE 15 KT. OVER FORECAST
WATERS FROM 39N TO 47N W OF 164E WINDS 25 TO 40 KT. SEAS 9 TO 14
FT.
.12 HOUR FORECAST LOW 47N161E 1000 MB. WITHIN 120 NM SW QUADRANT
WINDS 40 TO 50 KT. SEAS 16 TO 19 FT.
.24 HOUR FORECAST LOW 49N164E 997 MB. WITHIN 660 NM NE...840 NM
SE...AND 360 NM SW QUADRANTS WINDS 30 TO 45 KT. SEAS 10 TO 22 FT.
.48 HOUR FORECAST LOW W OF AREA 56N154E 995 MB. N OF 46N W OF
164E AND NW OF A LINE FROM 47N161W TO 47N177W WINDS 25 TO 40 KT.
SEAS 11 TO 20 FT.

...STORM WARNING...
.OVER FORECAST WATERS WITHIN 420 NM SW OF A LINE FROM 60N150W TO
57N138W AREA OF W TO NW WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST NEW LOW 59N143W 1005 MB. FROM 57N TO 59N
BETWEEN 147W AND 152W WINDS 40 TO 50 KT. SEAS 10 TO 14 FT.
ELSEWHERE WITHIN 540 NM S AND SW QUADRANTS WINDS 25 TO 40 KT.
SEAS TO 11 FT.
.48 HOUR FORECAST LOW 57N136W 991 MB. WITHIN 90 NM N...480 NM
S...AND 660 NM W QUADRANTS WINDS 30 TO 45 KT. SEAS 12 TO 26 FT.

...GALE WARNING...
.LOW 34N164W 1014 MB MOVING NW 15 KT. WITHIN 480 NM NE
SEMICIRCLE WINDS 25 TO 35 KT. SEAS 12 TO 18 FT.
.24 HOUR FORECAST LOW 39N169W 1014 MB. WITHIN 540 NM NE AND 720
NM SE QUADRANTS WINDS 20 TO 30 KT. SEAS 9 TO 14 FT.
.48 HOUR FORECAST LOW 45N167W 1012 MB. WITHIN 240 NM E OF A LINE
FROM 46N157W TO 34N160W WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.

...GALE WARNING...
.LOW 38N171E 1013 MB MOVING NW 25 KT. WITHIN 660 NM NE...360 NM
SE...AND 420 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS TO 11 FT.
.06 HOUR FORECAST LOW 40N171E 1011 MB. WITHIN 360 NM NE AND 300
NM SE QUADRANTS WINDS 25 TO 35 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
49N164E DESCRIBED ABOVE.

...GALE WARNING...
.48 HOUR FORECAST LOW 32N161E 1005 MB. OVER FORECAST WATERS FROM
30N TO 37N W OF 170E WINDS 25 TO 40 KT. SEAS 8 TO 15 FT.

...GALE WARNING...
.48 HOUR FORECAST NEW LOW 45N179W 1005 MB. WITHIN 420 NM
SE...300 NM SW...AND 540 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS
8 TO 13 FT.

...HEAVY FREEZING SPRAY WARNING...
.24 HOUR FORECAST LIGHT TO MODERATE FREEZING SPRAY N OF 59N AND
W OF 170W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF A LINE
FROM 57N160W TO 57N165W TO 61N177W.

.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.

.FRONT EXTENDS FROM 41N124W TO 38N131W TO 41N140W. BETWEEN THE
FRONT AND 53N AREA OF N TO NW WINDS 20 TO 30 KT. SEAS 10 TO 18
FT.
.24 HOUR FORECAST E OF A LINE FROM 48N149W TO 42N135W AREA OF NW
WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST CONDITIONS DIMINISHED.

.LOW 32N139W 1016 MB MOVING SE 15 KT. OVER FORECAST WATERS
WITHIN 300 NM N AND 480 NM NW QUADRANTS WINDS 20 TO 30 KT. SEAS
8 TO 13 FT.
.24 HOUR FORECAST LOW DISSIPATED. ASSOCIATED CONDITIONS S OF
AREA.

.OVER FORECAST WATERS N OF A LINE FROM 47N160E TO 51N169E AREA
OF E TO SE WINDS 20 TO 30 KT. SEAS TO 11 FT.
.24 HOUR FORECAST CONDITIONS DIMINISHED.

.OVER ICE FREE FORECAST WATERS N OF A LINE FROM 57N175E TO
59N174W AREA OF W TO SW WINDS TO 25 KT. SEAS 11 TO 14 FT.
.24 HOUR FORECAST NE OF A LINE FROM 60N178W TO 56N162W AREA OF W
TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST N OF 55N BETWEEN 159W AND 167W AREA OF N TO NW
WINDS 20 TO 30 KT. SEAS TO 8 FT.

.OVER ICE FREE FORECAST WATERS N OF 53N BETWEEN 157W AND 171W
AREA OF W TO SW WINDS TO 25 KT. SEAS TO 11 FT.
.24 HOUR FORECAST FORECAST CONDITIONS ABSORBED BY LOW 59N143W
DESCRIBED IN WARNINGS SECTION ABOVE.

.48 HOUR FORECAST OVER FORECAST WATERS FROM 31N TO 37N BETWEEN
119W AND 123W AREA OF NW WINDS TO 25 KT. SEAS TO 9 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM WITHIN 90 NM SE OF
A LINE FROM 46N175E TO 40N172E.
.24 HOUR FORECAST DENSE FOG WITHIN 90 NM E OF A LINE FROM
47N173E TO 43N175E AND FROM 41N TO 46N BETWEEN 163W AND 169W.
.48 HOUR FORECAST DENSE FOG WITHIN 180 NM NE OF A LINE FROM
44N169W TO 40N158W.

.HIGH 49N156W 1043 MB MOVING SE 10 KT.
.24 HOUR FORECAST HIGH 46N153W 1036 MB.
.48 HOUR FORECAST HIGH 38N143W 1031 MB.

.HIGH 54N173E 1037 MB MOVING NE 15 KT.
.24 HOUR FORECAST HIGH 58N178W 1042 MB.
.48 HOUR FORECAST HIGH DISSIPATED.

.24 HOUR FORECAST NEW HIGH 33N173W 1019 MB.
.48 HOUR FORECAST HIGH 35N163W 1019 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 0000 UTC MON FEB 27.
24 HOUR FORECAST VALID 0000 UTC TUE FEB 28.
48 HOUR FORECAST VALID 0000 UTC WED MAR 01.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 30N126W TO 25N134W TO 22N140W. N OF 23N W OF
137W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 30N120W TO 22N130W TO 21N134W.
N OF 28N W OF 137W NE WINDS 20 TO 25 KT. SEAS 9 TO 10 FT IN NW
SWELL. ELSEWHERE N OF 27N W OF 130W WINDS 20 KT OR LESS. SEAS
TO 8 FT IN NW SWELL.
.48 HOUR FORECAST WEAKENING COLD FRONT FROM 30N111W TO 24N120W
TO 20N131W. NW OF FRONT WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN
MIXED NW AND N TO NE WIND WAVES.

.FROM 08N TO 13N BETWEEN 127W AND 138W WINDS 20 KT OR LESS. SEAS
TO 9 FT IN MIXED NE WIND WAVES AND NW SWELL. FROM 04N TO 08N
BETWEEN 111.5W AND 124W WINDS 20 KT OR LESS. SEAS TO 8 FT IN
MIXED NE WIND WAVES AND NW SWELL.
.24 HOUR FORECAST FROM 08N TO 11N BETWEEN 133W AND 137W WINDS 20
KT OR LESS. SEAS TO 8 FT IN MIXED NE WIND WAVES AND NW SWELL.
.48 HOUR FORECAST FROM 02N TO 15N W OF 118W WINDS 20 KT OR LESS.
SEAS 8 FT IN MIXED NW AND NE SWELL.

.06 HOUR FORECAST 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.
.18 HOUR FORECAST FROM 10N TO 12N E OF 89W...INCLUDING THE GULF
OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST FROM 10N TO 12.5N E OF 89W...INCLUDING THE
GULF OF PAPAGAYO...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST GULF OF PAPAGAYO WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT. FROM 09.5N TO 11.5N BETWEEN 90W AND 93W WINDS 20
KT OR LESS. SEAS TO 8 FT IN MIXED E AND SW SWELL.

.18 HOUR FORECAST COLD FRONT FROM 30N121W TO 23.5N130W TO
23N140W. GULF OF CALIFORNIA N OF 30N S TO SW WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.
.24 HOUR FORECAST COLD FRONT FROM 30N120W TO 22N130W TO 21N134W.
GULF OF CALIFORNIA N OF 30N SW WINDS 20 TO 25 KT. SEAS LESS THAN
8 FT.
.42 HOUR FORECAST WEAKENING COLD FRONT FROM 31.5N113W TO
27.5N115W TO 20N131W. GULF OF CALIFORNIA WINDS 20 KT OR LESS.
SEAS LESS THAN 8 FT.

.24 HOUR FORECAST GULF OF PANAMA N OF 07N N WINDS 20 TO 25 KT.
SEAS LESS THAN 8 FT.
.36 HOUR FORECAST 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 0200 UTC MON FEB 27...

.TROUGH FROM 03N86W TO 05N95W. SCATTERED MODERATE FROM 01N TO
05.5N BETWEEN 85W AND 90W.

.TROUGH FROM 05.5N113W TO 09N110W. SCATTERED MODERATE TO STRONG
WITHIN 120 NM EITHER SIDE OF TROUGH.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
ITCZ FROM 04N113W TO 02N129W TO 00.5N139W. SCATTERED MODERATE
ISOLATED STRONG CONVECTION WITHIN 120 NM N OF AXIS BETWEEN 124W
AND 131W.

$$
.FORECASTER STRIPLING. NATIONAL HURRICANE CENTER.



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