High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 180949
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1030 UTC MON DEC 18 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC DEC 18
24 HOUR FORECAST VALID 0600 UTC DEC 19
48 HOUR FORECAST VALID 0600 UTC DEC 20

.WARNINGS.

...STORM WARNING...
.LOW 64N38W 964 MB MOVING N 30 KT. OVER FORECAST WATERS WITHIN
180 NM N SEMICIRCLE AND 420 NM S AND SE QUADRANTS WINDS 40 TO 55
KT. SEAS 20 TO 36 FT. ELSEWHERE N OF 55N E OF 42W WINDS 25 TO 40
KT. SEAS 11 TO 24 FT.
.24 HOUR FORECAST LOW DISSIPATED INLAND WITH NEW LOW 63N40W 975
MB. BETWEEN 60 NM AND 240 NM S AND SE QUADRANTS WINDS 35 TO 50
KT. SEAS 14 TO 25 FT. ELSEWHERE WITHIN 300 NM SE SEMICIRCLE
WINDS 25 TO 35 KT. SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW 65N39W 984 MB. BETWEEN 90 NM AND 360 NM S
QUADRANT WINDS 35 TO 50 KT. SEAS 12 TO 24 FT. ELSEWHERE WITHIN
600 NM S QUADRANT WINDS 25 TO 35 KT. SEAS 9 TO 17 FT.

...STORM WARNING...
.24 HOUR FORECAST NEW LOW 38N60W 1009 MB. WITHIN 240 NM S
QUADRANT WINDS 25 TO 35 KT. SEAS 8 TO 12 FT. ELSEWHERE OVER
FORECAST WATERS S OF A LINE FROM 41N72W TO 37N65W TO 36N56W
WINDS 20 TO 30 KT. SEAS TO 10 FT.
.48 HOUR FORECAST LOW 42N50W 995 MB. WITHIN 240 NM E AND SE
QUADRANTS WINDS 35 TO 50 KT. SEAS 10 TO 18 FT. ELSEWHERE WITHIN
90 NM W...300 NM N...360 NM S AND 540 NM E AND SE QUADRANTS
WINDS 25 TO 35 KT. SEAS TO 11 FT.

...GALE WARNING...
.LOW 55N45W 982 MB MOVING E 05 KT. WITHIN 300 NM SW QUADRANT
WINDS 25 TO 35 KT. SEAS 13 TO 20 FT. ELSEWHERE FROM 50N TO 55N
BETWEEN 35W AND 58W WINDS 20 TO 30 KT. SEAS 9 TO 19 FT.
.24 HOUR FORECAST LOW 56N40W 998 MB. WITHIN 540 NM S SEMICIRCLE
WINDS 20 TO 30 KT. SEAS 9 TO 18 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS E OF AREA.

...GALE WARNING...
.LOW E OF AREA 54N31W 992 MB MOVING NE 45 KT. OVER FORECAST
WATERS E OF A LINE FROM 33N41W TO 45N37W WINDS 25 TO 35 KT. SEAS
9 TO 18 FT. ELSEWHERE FROM 31N TO 50N E OF 63W WINDS TO 25 KT.
SEAS 8 TO 16 FT.
.24 HOUR FORECAST FROM 31N TO 44N E OF 46W WINDS LESS THAN 25
KT. SEAS TO 11 FT.
.48 HOUR CONDITIONS WELL E OF AREA.

...GALE WARNING...
.LOW 59N56W 984 MB MOVING SE 15 KT. OVER FORECAST WATERS W OF A
LINE FROM 55N52W TO 62N60W AND WITHIN 420 NM N AND NE QUADRANTS
WINDS 25 TO 40 KT. SEAS 8 TO 19 FT.
.24 HOUR FORECAST LOW 58N47W 990 MB. WITHIN 240 NM S...SE AND NW
QUADRANTS WINDS 20 TO 30 KT. SEAS 8 TO 15 FT.
.48 HOUR FORECAST LOW AND ASSOCIATED CONDITIONS ABSORBED BY LOW
65N39W ABOVE.

...GALE WARNING...
.48 HOUR FORECAST LOW INLAND 48N64W 987 MB. OVER FORECAST WATERS
WITHIN 360 NM E AND 540 NM S QUADRANTS WINDS 25 TO 40 KT. SEAS 8
TO 15 FT. ELSEWHERE WITHIN 420 NM E AND 900 NM S QUADRANTS WINDS
20 TO 30 KT. SEAS TO 10 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS FROM 47N
TO 50N W OF 60W...AND W OF A LINE FROM 51N53W TO 54N54W TO
60N59W TO 67N54W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY W OF LINE
FROM 52N51W TO 60N59W TO 67N55W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY N OF 63N W OF
58W.

.SYNOPSIS AND FORECAST.

.48 HOUR FORECAST WITHIN 360 NM S OF A LINE FROM 60N44W TO
54N55W AREA OF S TO SW WINDS 20 TO 30 KT. SEAS TO 11 FT.

.24 HOUR FORECAST HIGH 43N50W 1022 MB.
.48 HOUR FORECAST HIGH 46N35W 1026 MB.

.FORECASTER KOSIER. 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 0600 UTC MON DEC 18.
24 HOUR FORECAST VALID 0600 UTC TUE DEC 19.
48 HOUR FORECAST VALID 0600 UTC WED DEC 20.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E WINDS 30 TO 35 KT.
SEAS 12 TO 15 FT. ELSEWHERE FROM 09.5N TO 17.5N BETWEEN 72W AND
83W...NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. N OF 14N
BETWEEN 64W 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.
.12 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E
WINDS 25 TO 30 KT. SEAS 10 TO 13 FT. ELSEWHERE FROM 10N TO 17.5N
BETWEEN 69W AND 81W NE TO E WINDS 20 TO 25 KT. SEAS 8 TO 13 FT.
REMAINDER OF AREA S OF 18N BETWEEN 76W AND 83W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN NE TO E SWELL.
.18 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E
WINDS 30 TO 35 KT. SEAS 12 TO 14 FT. ELSEWHERE FROM 10N TO 17N
BETWEEN 72W AND 81W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
N OF 15N BETWEEN 70W AND 72W NE WINDS 20 TO 25 KT. SEAS TO 9 FT.
REMAINDER OF AREA S OF 18N BETWEEN 76W AND 83W WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN NE TO E SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.36 HOUR FORECAST FROM 10.5N TO 16N BETWEEN 73W AND 80W NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 12 FT. ELSEWHERE S OF 17.5N BETWEEN
69W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN NE TO E
SWELL.
.42 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 77W NE TO E
WINDS 30 TO 35 KT. SEAS 11 TO 13 FT. ELSEWHERE FROM 10N TO 17.5N
BETWEEN 70W AND 80W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. REMAINDER OF AREA S OF 17.5N
BETWEEN 76W AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE
TO E SWELL.
.48 HOUR FORECAST LITTLE CHANGE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N43W TO 25N55W TO 21N70W. N OF A LINE
FROM 31N40W TO 25N51W TO 24N62W TO 31N64W WINDS 20 KT OR LESS.
SEAS 8 TO 12 FT IN NW SWELL...HIGHEST N OF 29N BETWEEN 46W AND
56W.
.24 HOUR FORECAST DISSIPATING STATIONARY FRONT FROM 31N39W TO
26N45W. N OF A LINE FROM 27N35W TO 20N50W TO 23N59W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.48 HOUR FORECAST FRONT DISSIPATED. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

.ATLC FROM 13N TO 20N E OF 45W WINDS 20 KT OR LESS. SEAS 8 TO 9
FT IN MIXED NE AND NW SWELL.
.12 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 LITTLE CHANGE.

.ATLC 36 HOUR FORECAST NEW COLD FRONT JUST N OF AREA. N OF 30N
BETWEEN 58W AND 68W SW TO W WINDS 20 TO 25 KT. SEAS TO 8 FT.
.48 HOUR FORECAST COLD FRONT FROM 31N56W TO 29N64W. N OF 30N
BETWEEN 52W AND 61W WINDS 20 KT OR LESS. SEAS 8 FT IN NW SWELL.

.CARIBBEAN N OF 18N BETWEEN 73W AND 76W...INCLUDING WINDWARD
PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT. N OF 18N
BETWEEN 76W AND 83W NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST N OF 18N BETWEEN 73W AND 83W...INCLUDING
WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS TO 8 FT. N OF 18N
BETWEEN 78W AND 80W NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST N OF 18.5N BETWEEN 73W AND 76W...INCLUDING
WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.

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

$$
.FORECASTER LATTO. NATIONAL HURRICANE CENTER.



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