000
FZNT02 KNHC 201617
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1630 UTC THU DEC 20 2018

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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

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

SYNOPSIS VALID 1200 UTC THU DEC 20.
24 HOUR FORECAST VALID 1200 UTC FRI DEC 21.
48 HOUR FORECAST VALID 1200 UTC SAT DEC 22.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC N OF 23N W OF 78W SE TO S WINDS 25 TO 30 KT. SEAS 6 TO 8 
FT. ELSEWHERE W OF 72W SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 
8 FT. SCATTERED SHOWERS AND TSTMS N OF 26N W OF 75W.
.06 HOUR FORECAST N OF 27N W OF 78W SE TO S WINDS 30 TO 35 KT. 
SEAS 9 TO 12 FT. ELSEWHERE N OF 24N W OF 73W S WINDS 20 TO 30 
KT. SEAS 8 TO 10 FT. NUMEROUS SHOWERS AND SCATTERED TSTMS N OF 
26N W OF 75W.
.18 HOUR FORECAST COLD FRONT OVER SE U.S. NW OF LINE FROM 31N75W 
TO 27N80W S TO SW WINDS 30 TO 35 KT. SEAS 10 TO 16 FT. ELSEWHERE 
NW OF A LINE FROM 31N69W TO 27N74W TO 23N81W S WINDS 20 TO 30 
KT. SEAS 8 TO 12 FT. SCATTERED TO NUMEROUS TSTMS NEAR FRONT.
.24 HOUR FORECAST COLD FRONT FROM 30N78W TO 23N81W. E OF FRONT 
TO 73W S TO SW WINDS 30 TO 35 KT. SEAS 12 TO 18 FT. W OF FRONT 
SW TO W WINDS 30 TO 40 KT. SEAS 12 TO 20 FT. ELSEWHERE NW OF A 
LINE FROM 31N64W TO 27N69W TO 22N77W SE TO S WINDS 20 TO 30 KT.
SEAS 8 TO 12 FT.
.42 HOUR FORECAST COLD FRONT FROM 31N70W TO 21N75W. N OF 27N 
BETWEEN 68W AND 77W S TO SW WINDS 30 TO 40 KT. SEAS 12 TO 24 FT. 
ELSEWHERE W OF LINE FROM 31N62W TO 26N68W TO 22N79W S TO SW 
WINDS 20 TO 30 KT. SEAS 8 TO 12 FT...EXCEPT 12 TO 16 FT E OF 
FRONT TO 68W. SCATTERED TSTMS NEAR FRONT.
.48 HOUR FORECAST COLD FRONT FROM 31N69W TO 27N71W TO 20N74W. N 
OF 26N E OF FRONT TO LINE FROM 31N60W TO 26N760W S TO SW WINDS 
20 TO 30 KT. SEAS 8 TO 12 FT...EXCEPT 12 TO 16 FT BETWEEN FRONT 
AND 67W. N OF 27N W OF FRONT TO 80W W TO NW WINDS 20 TO 30 KT. 
SEAS 10 TO 17 FT...EXCEPT 15 TO 20 FT N OF 28N BETWEEN FRONT AND 
75W AND 8 TO 10 FT BETWEEN 79W AND 80W. ELSEWHERE W OF A LINE 
FROM 31N62W TO 25N69W S TO SW WINDS 20 TO 25 KT. SEAS 9 TO 13 
FT. 

...GULF OF MEXICO GALE WARNING...
.GULF OF MEXICO LOW PRES NEAR 31N88W 1002 MB WITH COLD FRONT TO 
26N89W TO 19N96W. E OF FRONT S TO SW WINDS 20 TO 30 KT. SEAS 8 
TO 11 FT. N OF 25N W OF FRONT W TO NW WINDS 25 TO 35 KT. SEAS 8 
TO 12 FT. WINDS AND SEAS HIGHER IN AND NEAR NUMEROUS SHOWERS AND 
TSTMS ALONG AND E OF FRONT.
.06 HOUR FORECAST COLD FRONT FROM 30N87W TO 26N88W TO 20N88W. E 
OF FRONT S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. N OF 22N W 
OF FRONT NW WINDS 20 TO 25 KT...EXCEPT 25 TO 25 KT N OF 26N W OF 
FRONT TO 94W AND NW 25 TO 30 KT N OF 26N W OF 94W. SEAS 10 TO 13 
FT. SCATTERED TO NUMEROUS TSTMS E OF FRONT.
.18 HOUR FORECAST COLD FRONT FROM 30N84W TO 26N86W TO 20N87W. 
FROM 23N TO 30N W OF FRONT TO 94W W TO NW WINDS 30 TO 35 KT. 
SEAS 14 TO 20 FT. ELSEWHERE W OF FRONT NW TO N WINDS 20 TO 25 
KT...EXCEPT W TO NW WINDS 25 TO 30 KT N OF 22N W OF FRONT TO 
94W. SEAS 8 TO 12 FT..EXCEPT 10 TO 14 FT N OF 22N W OF FRONT TO 
94W. SCATTERED TO NUMEROUS TSTMS NEAR FRONT.
.24 HOUR FORECAST COLD FRONT FROM 30N83W TO 25N85W TO 20N86W.
FROM 23N TO 30N W OF FRONT TO 92W W TO NW WINDS 30 TO 35 KT. 
SEAS 16 TO 20 FT. ELSEWHERE W TO NW WINDS 20 TO 30 KT...EXCEPT W 
WINDS 30 TO 40 KT STRAITS OF FLORIDA. SEAS 12 TO 18 FT N OF 22N 
AND 8 TO 12 FT S OF 22N. SCATTERED TO NUMEROUS TSTMS NEAR FRONT.
.36 HOUR FORECAST FRONT TO MOVE E OF AREA. E OF 90W NW WINDS 20 
TO 30 KT. SEAS 14 TO 20 FT. ELSEWHERE E OF 96W WINDS 20 KT OR 
LESS. SEAS 8 TO 13 FT IN NW TO N SWELL.
.42 HOUR FORECAST E OF 85W NW WINDS 20 TO 25 KT. SEAS 10 TO 16 
FT IN NW SWELL. ELSEWHERE E OF 92W WINDS 20 KT OR LESS. SEAS 8 
TO 12 FT IN NW SWELL.
.48 HOUR FORECAST E OF LINE FROM 30N86W TO 26N88W TO 21N90W 
WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL...HIGHEST SE 
PART.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N43W TO 26N54W AND STATIONARY TO 24N70W. 
N OF LINE FROM 31N35W TO 22N49W T0 24N65W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT NW SWELL.
.24 HOUR FORECAST WEAKENING COLD FRONT FROM 31N40W TO 25N53W. N 
OF LINE FROM 20N35W TO 16N47W TO 16N58W WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT IN NW SWELL.
.48 HOUR FORECAST FRONTAL TROUGH FROM 31N35W TO 23N45W. E OF A 
LINE FROM 31N46W TO 21N53W TO 14N59W TO 07N53W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN NW TO N SWELL. 

.ATLC S OF 10N BETWEEN 36W AND 54W WINDS 20 KT OR LESS. SEAS 8 
TO 9 FT IN MIXED N AND SE SWELL. 
.24 HOUR FORECAST S OF 10N BETWEEN 45W AND 54W WINDS 20 KT OR 
LESS. SEAS 8 FT IN MIXED N AND SE SWELL.   
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 10.5N TO 15N BETWEEN 71W AND 78W NE TO E WINDS 
20 TO 25 KT. SEAS 8 TO 11 FT.
.18 HOUR FORECAST FROM 12.5N TO 14.5N BETWEEN 70W AND 74W NE TO 
E WINDS 20 TO 25 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 12.5N TO 14N BETWEEN 72W AND 74W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.36 HOUR FORECAST FROM 10.5N TO 14N BETWEEN 70W AND 75W NE TO E 
WINDS 20 TO 25 KT. SEAS TO 8 FT.
.42 HOUR FORECAST FROM 11N TO 14N BETWEEN 72W AND 76W NE TO E 
WINDS 20 TO 25 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST 11N TO 14N BETWEEN 73W AND 79W NE TO E WINDS 
20 TO 25 KT. SEAS 8 TO 10 FT.

.CARIBBEAN N OF 15N W OF 85W SE TO S WINDS 20 TO 25 KT. SEAS 
LESS THAN 8 FT.
.18 HOUR FORECAST COLD FRONT FROM 23N83W TO 16N87W. NW OF FRONT 
NW WINDS 20 TO 25 KT. SEAS 8 TO 10 FT YUCATAN CHANNEL. SCATTERED 
TSTMS NEAR FRONT. 
.24 HOUR FORECAST COLD FRONT FROM 22N81W TO 15N84W. NW OF FRONT 
NW WINDS 20 TO 25 KT. SEAS 9 TO 13 FT IN NW SWELL N OF 19N 
BETWEEN 82W AND 86W...INCLUDING YUCATAN CHANNEL.
.42 HOUR FORECAST COLD FRONT FROM 20N76W TO 15N80W TO 09N81W. S 
OF 16N W OF FRONT N WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. 
ELSEWHERE W OF FRONT TO 86W WINDS 20 KT OR LESS. SEAS 8 TO 10 FT 
IN NW SWELL.
.48 HOUR FORECAST COLD FRONT FROM 20N75W TO 15N78W TO 09N80W. S 
OF 16N W OF FRONT N WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. 
ELSEWHERE W OF FRONT WINDS 20 KT OR LESS. SEAS 8 TO 9 FT IN NW 
SWELL. 

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

$$
.FORECASTER AGUIRRE. NATIONAL HURRICANE CENTER.