High Seas Forecast
Issued by NWS

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000
FZNT01 KWBC 161611
HSFAT1

HIGH SEAS FORECAST FOR METAREA IV
NWS OCEAN PREDICTION CENTER WASHINGTON DC
1630 UTC SAT DEC 16 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 16
24 HOUR FORECAST VALID 1200 UTC DEC 17
48 HOUR FORECAST VALID 1200 UTC DEC 18

.WARNINGS.

...HURRICANE FORCE WIND WARNING...
.COMPLEX LOW WITH MEAN CENTER 43N56W 981 MB MOVING NE 35 KT AND
RAPIDLY INTENSIFYING. WITHIN 240 NM SE SEMICIRCLE WINDS 40 TO 60
KT. SEAS 15 TO 22 FT. ELSEWHERE FROM 34N TO 45N BETWEEN 59W AND
70W WINDS 30 TO 40 KT. SEAS 12 TO 19 FT. ELSEWHERE OVER FORECAST
WATERS S OF 46N AND W OF A LINE FROM 31N56W TO 40N47W TO 46N47W
WINDS 20 TO 30 KT. SEAS 8 TO 14 FT.
.12 HOUR FORECAST LOW 48N51W 969 MB. WITHIN 180 NM W AND SW
QUADRANTS WINDS 50 TO 65 KT. SEAS 14 TO 24 FT.
.24 HOUR FORECAST LOW 55N46W 956 MB. WITHIN 360 NM SE AND 180 NM
SW QUADRANTS WINDS 50 TO 65 KT. SEAS 24 TO 42 FT. ALSO WITHIN
240 NM NW SEMICIRCLE...480 NM E AND SE QUADRANTS WINDS 35 TO 50
KT. SEAS 15 TO 26 FT. ELSEWHERE BETWEEN 46N AND 61N FROM 35W TO
51W WINDS 25 TO 35 KT. SEAS 10 TO 20 FT.
.48 HOUR FORECAST LOW 65N37W 965 MB. WITHIN 180 NM OF CENTER
WINDS 30 TO 45 KT. SEAS 16 TO 28 FT. ELSEWHERE N OF 49N AND E OF
44W WINDS 20 TO 30 KT. SEAS 12 TO 22 FT.

...STORM WARNING...
.LOW 60N60W 958 MB MOVING S 05 KT WILL TURN E. WITHIN 120 NM OF
CENTER EXCEPT NE QUADRANT AND BETWEEN 50N TO 60N FROM 35W TO 60W
WINDS 30 TO 45 KT. SEAS 18 TO 25 FT. ELSEWHERE WITHIN 360 NM NE
AND 420 NM NW QUADRANTS AND FROM 48N TO 60N WINDS 25 TO 35 KT.
SEAS 12 TO 20 FT.
.24 HOUR FORECAST LOW 58N55W 971 MB. WITHIN 300 NM SW SEMICIRCLE
WINDS 30 TO 45 KT. SEAS IN ICE FREE WATERS 10 TO 18 FT.
ELSEWHERE W OF A LINE FROM 52N52W TO 58N55W TO 60N58W TO 65N53W
WINDS 20 TO 30 KT. SEAS 10 TO 16 FT.
.36 HOUR FORECAST LOW 56N50W 978 MB. WITHIN 240 NM S AND 540 NM
W AND NW QUADRANTS WINDS 25 TO 40 KT. SEAS 12 TO 21 FT.
.48 HOUR FORECAST LOW 57N45W 981 MB. WITHIN 480 NM S AND 600 NM
W QUADRANTS WINDS 30 TO 40 KT. SEAS 10 TO 20 FT. ELSEWHERE W OF
44W AND N OF 48N WINDS 20 TO 30 KT. SEAS 10 TO 18 FT.

...GALE WARNING...
.LOW 63N41W 980 MB MOVING NE 10 KT. OVER FORECAST WATERS N OF
61N E OF 42W WINDS 25 TO 40 KT. SEAS 9 TO 17 FT.
.24 HOUR FORECAST LOW 65N38W 992 MB. N OF 60N AND E OF 42W WINDS
20 TO 30 KT. SEAS 10 TO 16 FT.
.48 HOUR FORECAST LOW DISSIPATED. CONDITIONS DESCRIBED WITH LOW
65N37W ABOVE.

...GALE WARNING...
.12 HOUR FORECAST NEW LOW 42N57W 999 MB. WITHIN 540 NM SW
QUADRANT WINDS 30 TO 40 KT. SEAS 14 TO 21 FT. ELSEWHERE WITHIN
600 NM SW SEMICIRCLE WINDS 20 TO 30 KT. SEAS 10 TO 17 FT.
.24 HOUR FORECAST LOW 42N46W 999 MB. OVER FORECAST WATERS E OF
70W BETWEEN 31N AND A LINE FROM 50N58W TO 42N46W TO 47N35W WINDS
25 TO 40 KT. SEAS 12 TO 22 FT...HIGHEST NEAR 38N58W.
.36 HOUR FORECAST LOW 48N37W 991 MB. WITHIN 240 NM E OF A LINE
FROM 50N36W TO 39N40W WINDS 30 TO 45 KT. SEAS 12 TO 20 FT.
.48 HOUR FORECAST LOW WELL E OF AREA. E OF A LINE FROM 40N35W TO
34N39W WINDS 20 TO 30 KT. SEAS 10 TO 16 FT. ELSEWHERE FROM 39N
TO 51N BETWEEN 50W AND 60W WINDS 20 TO 20 KT. SEAS 8 TO 14 FT.

...HEAVY FREEZING SPRAY WARNING...
.MODERATE TO HEAVY FREEZING SPRAY OVER FORECAST WATERS FROM 47N
TO 50N W OF 62W AND W OF A LINE FROM 52N53W TO 58N59W.
.24 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY FROM 47N TO
50N W OF 60W AND N OF 61N W OF 60W.
.48 HOUR FORECAST MODERATE TO HEAVY FREEZING SPRAY FROM 47N TO
50N W OF 60W AND W OF A LINE FROM 50N53W TO 60N59W TO 66N54W.

.SYNOPSIS AND FORECAST.

.DENSE FOG. 24 HOUR FORECAST VSBY OCCASIONALLY LESS THAN 1 NM
WITHIN 120 NM E OF A LINE FROM 56N43W TO 50N35W.
.48 HOUR FORECAST CONDITIONS IMPROVED.

.HIGH 46N44W 1019 MB MOVING NE 45 KT.
.24 HOUR FORECAST HIGH E OF AREA.

.24 HOUR FORECAST NEW HIGH 35N77W 1027 MB.
.48 HOUR FORECAST HIGH 31N69W 1025 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 SAT DEC 16.
24 HOUR FORECAST VALID 1200 UTC SUN DEC 17.
48 HOUR FORECAST VALID 1200 UTC MON DEC 18.

.WARNINGS.

...CARIBBEAN GALE WARNING...
.FROM 11N TO 12.5N BETWEEN 74W AND 76W NE TO E WINDS 25 TO 35
KT. SEAS 10 TO 12 FT. ELSEWHERE FROM 10.5N TO 17N BETWEEN 70W
AND 80W NE TO E WINDS 20 TO 30 KT. SEAS 8 TO 11 FT.
.06 HOUR FORECAST FROM 11N TO 17N BETWEEN 70W AND 80W NE TO E
WINDS 20 TO 25 KT...EXCEPT 25 TO 30 KT FROM 11N TO 12.5N BETWEEN
74W AND 76W. SEAS 8 TO 11 FT...EXCEPT 10 TO 12 FT FROM 11N TO
12.5N BETWEEN 74W AND 76W.
.12 HOUR FORECAST FROM 11N TO 12.5N BETWEEN 74W AND 76W NE TO E
WINDS 30 TO 35 KT. SEAS 10 TO 14 FT. ELSEWHERE FROM 11N TO 17N
BETWEEN 69W AND 80W 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. FROM 09.5N TO
16.5N BETWEEN 80W AND 82.5W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT
IN NE SWELL.
.24 HOUR FORECAST FROM 11N TO 12N BETWEEN 74W AND 76W NE TO E
WINDS 30 TO 35 KT. SEAS 11 TO 14 FT. ELSEWHERE FROM 09.5N TO 17N
BETWEEN 70W AND 81.5W...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 11 FT...EXCEPT 9 TO 13 FT S OF 13N BETWEEN
74W AND 76W. N OF 13N BETWEEN 64W AND 70W...INCLUDING CARIBBEAN
PASSAGES...NE TO E WINDS 20 TO 25 KT. SEAS TO 8 FT...EXCEPT LESS
THAN 8 FT CARIBBEAN PASSAGES. FROM 09.5N TO 16.5N BETWEEN 81.5W
AND 83W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE SWELL.
.30 HOUR FORECAST FROM 11N TO 13N BETWEEN 74W AND 76W NE TO E
WINDS 25 TO 30 KT. SEAS 11 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.
N OF 14.5N E OF 70W INCLUDING CARIBBEAN PASSAGES...NE TO E WINDS
20 TO 25 KT. SEAS 8 TO 9 FT EXCEPT LESS THAN 8 FT CARIBBEAN
PASSAGES. FROM 09.5N TO 16.5N BETWEEN 81.5W AND 83W WINDS 20 KT
OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.
.42 HOUR FORECAST FROM 11N TO 13N BETWEEN 73.5W AND 76W NE TO E
WINDS 30 TO 35 KT. SEAS 11 TO 15 FT. ELSEWHERE FROM 09.5N TO 17N
BETWEEN 70W AND 82W...INCLUDING THE GULF OF VENEZUELA...NE TO E
WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. N OF 14N BETWEEN 63W 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.
ELSEWHERE S OF 17N BETWEEN 79W 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 30 TO 35 KT. SEAS 11 TO 15 FT. ELSEWHERE FROM 09.5N TO
16.5N BETWEEN 71W AND 82W NE TO E WINDS 20 TO 25 KT...EXCEPT 25
TO 30 KT S OF 14N BETWEEN 74W AND 76W. SEAS 9 TO 14 FT. N OF 14N
BETWEEN 64W AND 71W...INCLUDING CARIBBEAN PASSAGES...NE TO E
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT EXCEPT LESS THAN 8 FT
CARIBBEAN PASSAGES. ELSEWHERE S OF 18N BETWEEN 74W AND 83.5W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NE TO E SWELL.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N70W TO 28N81W. N OF 30N E OF FRONT TO
62W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. N OF 30N W OF
FRONT TO 74W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N53W TO 26N64W. N OF 30N
WITHIN 270 NM E OF FRONT SW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
N OF 28N W OF FRONT TO 66W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT
IN NW SWELL.
.48 HOUR FORECAST WEAKENING COLD FRONT 31N43W TO 25N49W. N OF A
LINE FROM 31N64W TO 23N64W TO 24N49W TO 27N42W TO 31N35W WINDS
20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL...EXCEPT 10 TO 12 FT
N OF 29N.

.ATLC E OF A LINE FROM 31N62W TO 15N62W TO 17N45W TO 12N35W
WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW SWELL.
.24 HOUR FORECAST E OF A LINE FROM 31N47W TO 22N49W TO 17N52W TO
12N45W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN MIXED NE AND NW
SWELL.
.48 HOUR FORECAST FROM 15N TO 20N BETWEEN 37W AND 45W WINDS 20
KT OR LESS. SEAS 8 FT IN DECAYING MIXED NE AND NW SWELL.

.ATLC 12 HOUR FORECAST 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 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. FROM 23N TO 24N BETWEEN 75W AND 83W...INCLUDING
STRAITS OF FLORIDA...E WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.30 HOUR FORECAST 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.
.48 HOUR FORECAST LITTLE CHANGE.

.CARIBBEAN 18 HOUR FORECAST N OF 19N BETWEEN 73W AND 77W...
INCLUDING WINDWARD PASSAGE...NE WINDS 20 TO 25 KT. SEAS LESS
THAN 8 FT. N OF 20N BETWEEN 78W AND 82W NE TO E WINDS 20 TO 25
KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST N OF 18N BETWEEN 73W AND 82.5W...INCLUDING
WINDWARD PASSAGE...NE TO E WINDS 20 TO 25 KT. SEAS 8 FT.

.GULF OF MEXICO STATIONARY FRONT FROM 28N83W TO 25N93W TO
18N94W. S OF 22N W OF FRONT NW TO N WINDS 20 TO 25 KT. SEAS 8 TO
10 FT.
.06 HOUR FORECAST LOW PRES NEAR 26N97W 1016 MB WITH WARM FRONT
TO 26N92W TO 24N89W. WITHIN 120 NM N OF FRONT E TO SE WINDS 20
TO 25 KT. SEAS LESS THAN 8 FT.
.12 HOUR FORECAST LOW PRES NEAR 28N97W 1016 MB WITH WARM FRONT
TO 28N92W TO 26N89W. WITHIN 90 NM N OF WARM FRONT E TO SE WINDS
20 TO 25 KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST LOW PRES NEAR 29N95W 1016 MB WITH WARM FRONT
TO 30N92W TO 27N91W. FRONTAL TROUGH FROM LOW TO 27N95W TO 24N96W
TO 23N97W. WITHIN 60 NM SE QUADRANT OF LOW S TO SW WINDS 20 TO
25 KT. SEAS TO 8 FT. WITHIN 60 NM S OF WARM FRONT BETWEEN 93W
AND 94W SE TO S WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST LOW PRES TO MOVE INLAND AND WEAKEN NEAR 30N94W
1017 MB WITH WARM FRONT TO LIFT N OF AREA. FRONTAL TROUGH TO
EXTEND FROM LOW TO 27N94W TO 24N96W. WINDS 20 KT OR LESS. SEAS
LESS THAN 8 FT.

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.



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