North Atlantic High Seas Forecast

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FZNT01 KWBC 132209
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV 
NWS OCEAN PREDICTION CENTER WASHINGTON DC 
2230 UTC WED DEC 13 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS 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). 

SECURITE 

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

SYNOPSIS VALID 1800 UTC DEC 13 
24 HOUR FORECAST VALID 1800 UTC DEC 14 
48 HOUR FORECAST VALID 1800 UTC DEC 15 

.WARNINGS. 

...STORM WARNING...
.LOW INLAND 48N66W 974 MB MOVING NW 20 KT. WITHIN 360 NM E 
QUADRANT AND WITHIN 240 NM W OF A FRONT FROM 43N60W TO 38N60W 
WINDS 40 TO 50 KT. SEAS 16 TO 26 FT. ELSEWHERE OVER FORECAST 
WATERS WITHIN 600 NM NE QUADRANT AND FROM 31N TO 50N BETWEEN 50W 
AND 76W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST NEW LOW 56N61W 963 MB. WITHIN 360 NM N AND 600 
NM E QUADRANTS WINDS 40 TO 50 KT. SEAS 16 TO 28 FT. ELSEWHERE 
OVER FORECAST WATERS WITHIN 660 NM S...840 NM E...AND 540 NM N 
QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 22 FT.
.48 HOUR FORECAST NEW LOW 55N61W 965 MB. WITHIN 300 NM SE 
QUADRANT WINDS 40 TO 50 KT. SEAS 14 TO 20 FT. ELSEWHERE WITHIN 
600 NM SE QUADRANT WINDS 25 TO 40 KT. SEAS 9 TO 18 FT. 

...STORM WARNING...
.24 HOUR FORECAST LOW 41N64W 992 MB. WITHIN 360 NM SW QUADRANT 
WINDS 40 TO 55 KT. SEAS 16 TO 22 FT. ELSEWHERE WITHIN 960 NM SW 
AND 360 NM SE QUADRANTS WINDS 25 TO 40 KT. SEAS 8 TO 16 FT. 
.48 HOUR FORECAST LOW 58N52W 961 MB. WITHIN 240 NM NE QUADRANT 
WINDS 40 TO 55 KT. SEAS 16 TO 26 FT. ELSEWHERE WITHIN 840 NM SE 
AND 300 NM N QUADRANTS WINDS 25 TO 40 KT. SEAS 10 TO 20 FT.

...STORM WARNING...
.LOW WELL E OF AREA. FROM 56N TO 61N BETWEEN 35W AND 44W WINDS 
40 TO 50 KT. SEAS 18 TO 30 FT. ELSEWHERE FROM 54N TO 67N BETWEEN 
35W AND 47W WINDS 25 TO 40 KT. SEAS 12 TO 18 FT.
.24 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS WELL E OF AREA.

...GALE WARNING... 
.LOW 45N44W 1014 MB MOVING E 20 KT. WITHIN 420 NM E OF A LINE 
FROM 47N43W TO 35N51W WINDS 25 TO 40 KT. SEAS 8 TO 16 FT.
.24 HOUR FORECAST LOW WELL E OF AREA. FRONT TO EXTEND FROM 
49N37W TO 36N50W. WITHIN 300 NM E OF THE FRONT WINDS 20 TO 30 
KT. SEAS 8 TO 14 FT.
.48 HOUR FORECAST FRONT TO EXTEND FROM 49N37W TO 36N50W. WITHIN 
240 NM E OF THE FRONT WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.

...HEAVY FREEZING SPRAY WARNING... 
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE 
FROM 47N64W TO 50N62W. LIGHT TO MODERATE FREEZING SPRAY NW OF A 
LINE FROM 61N60W TO 63N50W. 
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF A LINE 
FROM 47N64W TO 50N61W. LIGHT TO MODERATE FREEZING SPRAY W OF A 
LINE FROM 55N54W TO 61N64W. 

.SYNOPSIS AND FORECAST. 

.48 HOUR FORECAST NEW LOW 41N51W 1010 MB. WITHIN 180 NM SE OF A 
LINE FROM 45N45W TO 39N60W WINDS 20 TO 30 KT. SEAS 10 TO 17 FT. 

.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 43N TO 47N 
BETWEEN 49W AND 60W AND FROM 47N TO 49N BETWEEN 60W AND 64W.  
.24 HOUR FORECAST DENSE FOG FROM 46N TO 49N BETWEEN 35W AND 38W. 
.48 HOUR FORECAST CONDITIONS IMPROVED. 

.HIGH 52N43W 1025 MB MOVING E 20 KT. 
.24 HOUR FORECAST HIGH E OF THE AREA. 

.12 HOUR FORECAST NEW HIGH 60N59W 1022 MB. 
.24 HOUR FORECAST HIGH N OF AREA. 

.FORECASTER KREKELER. 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 1800 UTC WED DEC 13.
24 HOUR FORECAST VALID 1800 UTC THU DEC 14.
48 HOUR FORECAST VALID 1800 UTC FRI DEC 15.

.WARNINGS.

...GALE WARNING...
.GULF OF MEXICO 36 HOUR FORECAST COLD FRONT FROM 30N92W TO 
26N97W. W OF FRONT N TO NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.
.48 HOUR FORECAST COLD FRONT FROM 30N84W TO 25N96W TO 21N97W. 
FROM 22N TO 24N W OF 97W N TO NW WINDS 30 TO 35 KT. SEAS 9 TO 12 
FT. ELSEWHERE W OF FRONT AND S OF 28N N TO NW WINDS 20 TO 30 KT. 
SEAS TO 10 FT.

.SYNOPSIS AND FORECAST.

.COLD FRONT FROM 31N65W TO 25N72W TO 23N80W. N OF 28N E OF FRONT 
TO 55W SW WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. N OF 29N W OF 
FRONT TO 72W NW WINDS 20 TO 25 KT. SEAS 12 TO 15 FT...AND 8 TO 
12 FT IN NW SWELL ELSEWHERE N OF 26N W OF FRONT TO 77W.
.12 HOUR FORECAST DISSIPATING COLD FRONT FROM 31N60W TO 25N71W. 
N OF LINE FROM 31N53W TO 24N71W TO 29N73W WINDS 20 KT OR LESS. 
SEAS 8 TO 13 FT IN NW SWELL.
.24 HOUR FORECAST DISSIPATING STATIONARY FRONT FROM 31N53W TO 
20N70W. N OF LINE FROM 31N51W TO 26N59W TO 24N65W TO 31N72W 
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.48 HOUR FORECAST TROUGH FROM 31N53W TO 25N60W. N OF LINE FROM 
31N39W TO 22N47W TO 24N54W TO 31N57W WINDS 20 KT OR LESS. SEAS 8 
TO 10 FT IN NW SWELL.

.ATLC N OF 22N E OF 39W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED NW AND E SWELL.
.24 HOUR FORECAST E OF LINE FROM 31N35W TO 24N43W TO 18N35W 
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NW AND E SWELL.
.48 HOUR FORECAST FROM 17N TO 28N E OF 40W WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN MIXED NW AND E SWELL.

.CARIBBEAN DISSIPATING STATIONARY FRONT FROM 20N72W TO 15N78W TO 
10N80W. S OF 17N W OF FRONT TO 83W N WINDS 20 TO 25 KT. SEAS TO 
9 FT.
.24 HOUR FORECAST FRONT DISSIPATED. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.CARIBBEAN 06 HOUR FORECAST FROM 11N TO 12N BETWEEN 73W AND 75W 
NE TO E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST FROM 11N TO 13N BETWEEN 70W AND 76W NE TO E 
WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FROM 11N TO 15N BETWEEN 71W AND 79W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 10 FT. 

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

$$
.FORECASTER MCELROY. NATIONAL HURRICANE CENTER.