High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 171602
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SUN DEC 17 2017

CCODE/1:31:04:01:00/AOW/NWS/CCODE
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.
ONLY YOU KNOW THE WEATHER AT YOUR POSITION. REPORT IT TO THE
NATIONAL WEATHER SERVICE. EMAIL US AT
VOSOPS@NOAA.GOV(LOWERCASE).

PAN PAN

NORTH ATLANTIC NORTH OF 31N TO 67N AND WEST OF 35W

SYNOPSIS VALID 1200 UTC DEC 17
24 HOUR FORECAST VALID 1200 UTC DEC 18
48 HOUR FORECAST VALID 1200 UTC DEC 19

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.LOW 56N44W 953 MB MOVING NE 30 KT. FROM 120 NM TO 300 NM SE
QUADRANT WINDS 50 TO 65 KT. SEAS 25 TO 42 FT. ALSO WITHIN 300 NM
N...240 NM W...420 NM SW...360 NM SE QUADRANTS WINDS 35 TO 50
KT. SEAS 14 TO 28 FT. ELSEWHERE FROM 47N TO 62N E OF 51W WINDS
25 TO 35 KT. SEAS 9 TO 18 FT.
.24 HOUR FORECAST LOW 65N37W 965 MB. WITHIN 180 NM SE...AND 120
NM N AND NE QUADRANTS WINDS 30 TO 45 KT. SEAS 20 TO 30 FT.
ELSEWHERE NE OF A LINE FROM 55N43W TO 62N49W AND N OF 62N E OF
GREENLAND WINDS 25 TO 35 KT. SEAS IN ICE FREE WATERS 12 TO 24
FT. .48 HOUR FORECAST LOW 65N39W 977 MB. WITHIN 420 NM S AND SE
QUADRANTS WINDS 30 TO 45 KT. SEAS 11 TO 23 FT.

...GALE WARNING...
.LOW 57N55W 972 MB MOVING SE 15 KT WILL TURN E. WITHIN 180 NM SW
OF A LINE FROM 56N53W TO 60N60W WINDS 30 TO 40 KT. SEAS 10 TO 16
FT. ELSEWHERE WITHIN 420 NM S AND SW...300 NM NW QUADRANTS WINDS
20 TO 30 KT. SEAS 8 TO 14 FT.
.24 HOUR FORECAST LOW 56N42W 984 MB. WITHIN 300 NM E AND SE
QUADRANTS WINDS 25 TO 35 KT. SEAS 13 TO 20 FT.
.48 HOUR FORECAST LOW DISSIPATED E OF AREA. CONDITIONS DESCRIBED
WITH LOW 57N47W BELOW.

...GALE WARNING...
.LOW 42N45W 997 MB MOVING NE 40 KT. WITHIN 480 NM SE SEMICIRCLE
AND OVER AREA FROM 33N TO 50N BETWEEN 68W AND 50W WINDS 25 TO 35
KT. SEAS 12 TO 24 FT. ELSEWHERE E OF 70W TO 35W BETWEEN 31N AND
50N WINDS 20 TO 30 KT. SEAS 8 TO 17 FT.
.24 HOUR FORECAST LOW WELL E OF AREA 60N25W 991 MB. OVER
FORECAST WATERS WITHIN 180 NM SE OF A FRONT FROM 40N35W TO
31N41W WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. ELSEWHERE FROM 31N TO
50N BETWEEN 35W AND 62W WINDS TO 25 KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST LOW WELL E OF AREA AND CONDITIONS DESCRIBED
WITH LOW 57N47W.

...GALE WARNING...
.LOW 63N56W 982 MB MOVING W 05 KT WILL TURN SE. WITHIN 180 NM NW
QUADRANT WINDS TO 25 KT. SEAS TO 12 FT.
.24 HOUR FORECAST LOW 58N52W 983 MB. WITHIN 300 NM S AND
SW...360 NM NW QUADRANTS WINDS 25 TO 35 KT. SEAS 9 TO 17 FT.
ELSEHWERE N OF 59N AND E OF 55W WINDS 20 TO 30 KT. SEAS 8 TO 15
FT.
.48 HOUR FORECAST LOW 57N44W 992 MB. WITHIN 180 NM S SEMICIRCLE
WINDS 30 TO 45 KT. SEAS 10 TO 19 FT. ELSEWHERE FROM 49N TO 58N
BETWEEN 35W AND 52W WINDS 20 TO 30 KT. SEAS 9 TO 16 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS FROM 47N
TO 50N W OF 61W...FROM 51N TO 54N W OF 53W AND W OF A LINE FROM
64N59W TO 67N56W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY FROM 47N TO
50N W OF 59W AND W OF LINE FROM 50N53W TO 55N54W TO 60N60W TO
62N61W TO 67N54W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE
FROM 52N52W TO 60N61W TO 67N57W.

.SYNOPSIS AND FORECAST.

.LOW 64N38W 990 MB MOVING NE 10 KT. WITHIN 120 NM N AND NE
QUADRANTS WINDS TO 25 KT. SEAS 10 TO 17 FT.
.24 HOUR FORECAST LOW DISSIPATED WITH CONDITIONS DESCRIBED WITH
LOW 65N37W ABOVE.

.24 HOUR FORECAST NEW LOW 35N72W 1020 MB. WITHIN 180 NM OF
CENTER WINDS TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LOW 38N58W 1012 MB. WITHIN 420 NM S SEMICIRCLE
WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 51N TO 58N
BETWEEN 35W AND 38W.
.24 HOUR FORECAST CONDITIONS IMPROVED.

.HIGH 32N75W 1026 MB MOVING SE 15 KT.
.24 HOUR FORECAST HIGH S OF AREA.

.24 HOUR FORECAST HIGH 43N68W 1024 MB.
.48 HOUR FORECAST HIGH 45N46W 1020 MB.

.FORECASTER SIENKIEWICZ. OCEAN PREDICTION CENTER.

NATIONAL HURRICANE CENTER MIAMI FL

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND
GULF OF MEXICO

SYNOPSIS VALID 1200 UTC SUN DEC 17.
24 HOUR FORECAST VALID 1200 UTC MON DEC 18.
48 HOUR FORECAST VALID 1200 UTC TUE DEC 19.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.FROM 11N TO 12N BETWEEN 74W AND 76W NE TO E WINDS 30 TO 35 KT.
SEAS 11 TO 13 FT. ELSEWHERE FROM 09.5N TO 17.5N BETWEEN 70W AND
81W NE TO E WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT S OF 14N
BETWEEN 74W AND 76W. SEAS 8 TO 12 FT. REMAINDER AREA S OF 17N
BETWEEN 76W AND 82.5W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE
TO E SWELL. N OF 13N BETWEEN 63W AND 70W...INCLUDING CARIBBEAN
PASSAGES...NE TO E WINDS 20 TO 25 KT. SEAS TO 9 FT EXCEPT LESS
THAN 8 FT CARIBBEAN PASSAGES.
.06 HOUR FORECAST FROM 11N TO 13N BETWEEN 73W AND 76W NE TO E
WINDS 25 TO 30 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10N TO 17N
BETWEEN 70W AND 81W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 12 FT.
REMAINDER AREA S OF 17N BETWEEN 76W AND 83W WINDS 20 KT OR LESS.
SEAS 8 TO 10 FT IN NE TO E SWELL. N OF 14.5N BETWEEN 65W AND 70W
NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 9 FT.
.12 HOUR FORECAST FROM 11N TO 12.5N BETWEEN 73.5W AND 76W NE TO
E WINDS 30 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 09.5N TO
17N BETWEEN 70W AND 82W...INCLUDING THE GULF OF VENEZUELA...NE
TO E WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT S OF 13.5N BETWEEN
73.5W AND 76W. SEAS 8 TO 13 FT...EXCEPT 10 TO 14 FT S OF 13.5N
BETWEEN 73.5W AND 76W. REMAINDER AREA S OF 17N BETWEEN 76W AND
83W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL. N OF
14N BETWEEN 65W AND 70W...INCLUDING CARIBBEAN PASSAGES...NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 9 FT EXCEPT LESS THAN 8 FT CARIBBEAN
PASSAGES.
.24 HOUR FORECAST LITTLE CHANGE.
.30 HOUR FORECAST FROM 10N TO 17.5N BETWEEN 69W AND 81W NE TO E
WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT S OF 13N BETWEEN 74W AND
76W. SEAS 8 TO 12 FT...EXCEPT 10 TO 14 FT S OF 13N BETWEEN 74W
AND 76W. REMAINDER AREA S OF 18N BETWEEN 76W AND 83W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.
.36 HOUR FORECAST FROM 11N TO 12N BETWEEN 74W AND 76W NE TO E
WINDS 30 TO 35 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10N TO 17.5N
BETWEEN 69W AND 82W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT EXCEPT 25 TO 30 KT S OF 13N BETWEEN 74W AND
76W. SEAS 8 TO 12 FT...EXCEPT 10 TO 13 FT S OF 13N BETWEEN 74W
AND 76W. REMAINDER AREA S OF 18N BETWEEN 76W AND 83.5W WINDS 20
KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.
.48 HOUR FORECAST FROM 11N TO 12N BETWEEN 74W AND 76W NE TO E
WINDS 25 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 10N TO 17.5N
BETWEEN 69W AND 81W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 12 FT. REMAINDER AREA S OF 18N
BETWEEN 76W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE
TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N52W TO 26N64W. N OF 27N E OF 63W TO A
LINE FROM 31N46W TO 27N54W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN NW SWELL...HIGHEST N OF 29N.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 31N43W TO 25N50W. N
OF A LINE FROM 31N38W TO 24N51W TO 25N60W TO 31N64W WINDS 20 KT
OR LESS. SEAS 8 TO 11 FT IN NW SWELL...HIGHEST N OF 29N.
.48 HOUR FORECAST DISSIPATING COLD FRONT FROM 31N40W TO 26N46W.
N OF 22N E OF 54W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW
SWELL.

.ATLC FROM 12N TO 27N E OF 48W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST FROM 15N TO 18N BETWEEN 38W AND 42W WINDS 20
KT OR LESS. SEAS TO 8 FT IN DECAYING MIXED NE AND NW SWELL.
.30 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.ATLC S OF 21N BETWEEN 72W AND 74W...INCLUDING APPROACH TO
WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN
8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN N OF 18.5N BETWEEN 73W AND 81W...INCLUDING WINDWARD
PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST N OF 18N BETWEEN 74W AND 78.5W...INCLUDING
WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS TO 9 FT. FROM 18N
TO 21N BETWEEN 78.5W AND 81W NE TO E WINDS 20 TO 25 KT. SEAS TO
8 FT.
.48 HOUR FORECAST N OF 18.5N BETWEEN 74W AND 77W...INCLUDING
WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS TO 8 FT.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.



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