000
FZNT02 KNHC 200300
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
0430 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC THU DEC 20.
24 HOUR FORECAST VALID 0000 UTC FRI DEC 21.
48 HOUR FORECAST VALID 0000 UTC SAT DEC 22.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC 12 HOUR FORECAST N OF 27N W OF 73W S TO SE WINDS 20 TO 25 
KT. SEAS LESS THAN 8 FT.
.18 HOUR FORECAST N OF 28N BETWEEN 78W AND 81W SE TO S WINDS 30 
TO 35 KT. SEAS 10 FT. ELSEWHERE N OF 24N W OF 73W S WINDS 20 TO 
30 KT. SEAS TO 9 FT N OF 27N. SCATTERED TSTMS N OF 28N W OF 78W.
.24 HOUR FORECAST COLD FRONT APPROACH SE UNITED STATES COAST. N 
OF 28N BETWEEN 76W AND 81W S WINDS 30 TO 35 KT. SEAS 10 TO 15 FT.
ELSEWHERE W OF LINE FROM 31N70W TO 23N80W SE TO S WINDS 20 TO 30 
KT. SEAS 8 TO 11 FT N OF 26.5N. SCATTERED TSTMS N OF 28N W OF 
78W.
.36 HOUR FORECAST COLD FRONT FROM 31N76W TO 23N80W. N OF 26.5N 
BETWEEN 73W AND 81W S TO SW WINDS 30 TO 40 KT. SEAS 10 TO 18 FT.
ELSEWHERE W OF LINE FROM 31N66W TO 22N78W S WINDS 20 TO 30 KT. 
SEAS TO 11 FT. NUMEROUS TSTMS IN LINES WITHIN 180 NM E OF FRONT.
.48 HOUR FORECAST COLD FRONT FROM 31N73W TO 22N76W. N OF 27N 
BETWEEN 70W AND 79.5W S TO SW WINDS 30 TO 40 KT. SEAS 12 TO 23 
FT. ELSEWHERE W OF LINE FROM 31N64W TO 27N63W TO 22N79W S WINDS 
20 TO 30 KT. SEAS 8 TO 13 FT. NUMEROUS TSTMS IN LINES WITHIN 150 
NM E OF FRONT.

...GULF OF MEXICO GALE WARNING...
.GULF OF MEXICO COLD FRONT FROM 30N92W TO 20N94W. E OF FRONT SE 
TO S WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT. SCATTERED TSTMS N 
OF 22N E OF 96W.
.12 HOUR FORECAST COLD FRONT FROM 30N86W TO 18.5N92W. E OF FRONT 
S TO SW WINDS 20 TO 30 KT. SEAS TO 10 FT. N OF 24N W OF 92W NW 
WINDS 20 TO 25 KT. SEAS BUILDING TO 8 FT. SCATTERED TSTMS N OF 
22N E OF 96W.
.18 HOUR FORECAST COLD FRONT FROM 30N85W TO 19N90W. E OF FRONT S 
TO SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. N OF 25N BETWEEN 91W 
AND 95W NW WINDS 30 TO 35 KT. SEAS 9 TO 14 FT. ELSEWHERE W OF 
THE FRONT W TO NW WINDS 20 TO 30 KT. SEAS TO 10 FT. SCATTERED 
TSTMS IN LINES E OF FRONT.
.24 HOUR FORECAST COLD FRONT FROM 30N83W TO 22N85W. E OF FRONT S 
TO SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. N OF 23N BETWEEN 86W 
AND 95W W TO NW WINDS 30 TO 40 KT. SEAS 10 TO 16 FT. ELSEWHERE W 
OF FRONT W TO NW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. SCATTERED 
TSTMS IN LINES E OF FRONT.
.48 HOUR FORECAST FRONT E OF AREA. E OF 90W NW WINDS 20 TO 30 
KT. SEAS 12 TO 20 FT. ELSEWHERE E OF 96W WINDS 20 KT OR LESS. 
SEAS 8 TO 12 FT PRIMARILY IN NW SWELL.  

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N48W TO 23.5N64W THEN FRONTAL TROUGH TO 
25N76W. WITHIN AREA BOUNDED BY A LINE FROM 31N66W TO 31N38W TO 
26N56W TO 27N65W TO 31N66W WINDS 20 KT OR LESS. SEAS 8 TO 14 FT 
PRIMARILY IN MIXED SE AND NW SWELL...HIGHEST SEAS AT 31N51W.
.24 HOUR FORECAST COLD FRONT FROM 31N41W TO 26N48W THEN FRONTAL 
TROUGH TO 24N60W TO 28N70W. WITHIN AREA BOUNDED BY A LINE FROM 
31N55W TO 31N35W TO 28N50W TO 21N50W TO 26N58W TO 31N55W WINDS 
20 KT OR LESS. SEAS 8 TO 11 FT PRIMARILY IN MIXED N SWELL... 
HIGHEST SEAS NEAR 30N42W.
.48 HOUR FORECAST FRONTAL TROUGH FROM 31N37W TO 24N43W TO 
23N60W. WITHIN AREA BOUNDED BY A LINE FROM 31N46W TO 31N35W TO 
20N35W TO 18N42W TO 26N51W TO 31N46W WINDS 20 KT OR LESS. SEAS 
TO 9 FT PRIMARILY IN MIXED N SWELL.
 
.ATLC S OF 11N BETWEEN 35W AND 50W WINDS 20 KT OR LESS. SEAS TO 
9 FT IN MIXED N AND E SWELL.
.24 HOUR FORECAST S OF 09N BETWEEN 43W AND 50W WINDS 20 KT OR 
LESS. SEAS TO 8 FT IN MIXED N AND E SWELL. 
.42 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 10.5N TO 16N BETWEEN 69W AND 79W NE TO E WINDS 
20 TO 25 KT. SEAS TO 10 FT.
.24 HOUR FORECAST S OF 14N BETWEEN 64W AND 74W NE TO E WINDS 20 
TO 25 KT. SEAS TO 9 FT.
.48 HOUR FORECAST S OF 14N BETWEEN 69W AND 74W NE TO E WINDS 20 
TO 25 KT. SEAS TO 8 FT.

.CARIBBEAN W OF 84W SE TO S WINDS 20 TO 25 KT. SEAS LESS THAN 8 
FT.
.24 HOUR FORECAST COLD FRONT 22N85W TO 17N87W. N OF 18N E OF 
FRONT TO 80W S TO SW WINDS 20 TO 30 KT. SEAS TO 8 FT. N OF 20N W 
OF FRONT WINDS NW 20 TO 25 KT. SEAS TO 9 FT. SCATTERED TSTMS N 
OF 18N.
.48 HOUR FORECAST COLD FRONT FROM 22N76W TO 09.5N81W. S OF 17N W 
OF FRONT TO 85W NW TO W WINDS 20 TO 30 KT. SEAS TO 11 FT 
ELSEWHERE W OF FRONT WINDS 20 KT OR LESS. SEAS 8 TO 12 
FT...HIGHEST SEAS ACROSS YUCATAN BASIN.
  
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.