000
FZNT02 KNHC 202136
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
2230 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1800 UTC THU DEC 20.
24 HOUR FORECAST VALID 1800 UTC FRI DEC 21.
48 HOUR FORECAST VALID 1800 UTC SAT DEC 22.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC N OF 27N W OF 77W S WINDS 30 TO 35 KT. SEAS 9 TO 14 FT. 
ELSEWHERE NW OF LINE FROM 31N71W TO 25N80W S WINDS 20 TO 30 KT. 
SEAS 8 TO 10 FT N OF 27N. SCATTERED TSTMS DEVELOPING IN LINES N 
OF 26N W OF 75W.
.12 HOUR FORECAST COLD FRONT MOVING OFF SE UNITED STATES COAST.
N OF 27N BETWEEN 75W AND 80W AND S OF 27N W OF 77W S TO SW WINDS 
30 TO 35 KT. SEAS 11 TO 17 FT. ELSEWHERE NW OF A LINE FROM 
31N68W TO 27N67W TO 22N79W S WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. 
SCATTERED TSTMS IN LINES WITHIN 240 NM E OF FRONT.
.24 HOUR FORECAST COLD FRONT FROM 30N78W TO 23N81W. W OF LINE 
FROM 31N70W TO 23N80W SW WINDS 30 TO 40 KT. SEAS 11 TO 22 
FT...HIGHEST SEAS AT 31N77W. ELSEWHERE NW OF A LINE FROM 31N65W 
TO 29N65W TO 22N78W S TO SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT.
SCATTERED TSTMS IN LINES WITHIN 360 NM E OF FRONT.
.36 HOUR FORECAST COLD FRONT FROM 31N75W TO 21N78W. N OF 29N 
BETWEEN 68W AND 78W S TO SW WINDS 30 TO 35 KT. SEAS 13 TO 23 FT. 
ELSEWHERE NW OF LINE FROM 31N62W TO 26N70W TO 23N80W S TO SW 
WINDS 20 TO 30 KT. SEAS 10 TO 15 FT N OF 27N AND 8 TO 12 FT S OF 
27N. SCATTERED TSTMS IN LINES WITHIN 360 NM E OF FRONT.
.42 HOUR FORECAST COLD FRONT FROM 31N69W TO 21N76W. N OF 27.5N W 
OF 63W SW TO W WINDS 20 TO 30 KT. SEAS 8 TO 21 FT WITH HIGHEST 
SEAS AT 31N71W. OPEN WATERS ELSEWHERE W OF FRONT WINDS 20 KT OR 
LESS. SEAS TO 9 FT IN MIXED SWELL. SCATTERED TSTMS IN LINES 
WITHIN 240 NM E OF FRONT. 
.48 HOUR FORECAST COLD FRONT FROM 31N66W TO 21N74W. N OF 30N 
BETWEEN 63W AND 79W SW TO W WINDS 20 TO 25 KT. SEAS 8 TO 18 FT 
WITH HIGHEST SEAS AT 31N69W. OPEN WATERS FROM 24N TO 30N BETWEEN 
65W AND 78W WINDS 20M KT OR LESS. SEAS 8 TO 14 FT PRIMARILY IN 
MIXED SWELL.
 
...GULF OF MEXICO GALE WARNING...
.GULF OF MEXICO COLD FRONT FROM 30N86W TO 21N89W. E OF FRONT S 
TO SW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT. W OF FRONT NW WINDS 20 
TO 30 KT. SEAS 8 TO 14 FT N OF 21N. SCATTERED TSTMS IN LINES E 
OF FRONT.
.03 HOUR FORECAST COLD FRONT FROM 30N86W TO 21N87W. E OF FRONT S 
TO SW WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. FROM 23N TO 28N 
BETWEEN 89W AND 95W NW WINDS 30 TO 35 KT. SEAS 10 TO 15 FT. 
ELSEWHERE W OF FRONT NW WINDS 20 TO 30 KT. SEAS 8 TO 12 FT N OF 
21N. SCATTERED TSTMS IN LINES E OF FRONT. 
.12 HOUR FORECAST COLD FRONT FROM 30N85W TO 21N85W. SW WINDS 20 
TO 30 KT. SEAS 8 TO 12 FT. FROM 23N TO 29N BETWEEN 83W AND 93W 
NW WINDS 30 TO 35 KT. SEAS 13 TO 20 FT. ELSEWHERE W OF FRONT NW 
TO N WINDS 20 TO 30 KT. SEAS 8 TO 13 FT. SCATTERED TSTMS ACROSS 
STRAITS OF FLORIDA. 
.24 HOUR FORECAST FRONT E OF AREA. FROM 23N TO 28N E OF 89W W TO 
NW WINDS 30 TO 35 KT. SEAS 13 TO 21 FT. ELSEWHERE W OF FRONT TO 
92W W TO NW WINDS 20 TO 30 KT. SEAS 8 TO 15 FT. BETWEEN 92W AND 
96W WINDS 20 KT OR LESS. SEAS TO 11 FT PRIMARILY IN NW SWELL.
.30 HOUR FORECAST E OF 90W W TO NW WINDS 20 TO 30 KT. SEAS 12 TO 
20 FT. ELSEWHERE E OF 94W WINDS 20 KT OR LESS. SEAS TO 11 FT 
PRIMARILY IN NW SWELL.
.42 HOUR FORECAST E OF 88W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT 
PRIMARILY IN NW SWELL. 
.48 HOUR FORECAST S OF 27N E OF 86W WINDS 20 KT OR LESS. SEAS TO 
9 FT IN NW SWELL. 

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT FROM 31N44W TO 25N60W THEN STATIONARY TO 
27N70W. WITHIN AREA BOUNDED BY A LINE FROM 31N60W TO 31N35W TO 
20N50W TO 25N65W TO 31N60W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT 
PRIMARILY IN NW SWELL...HIGHEST SEAS AT 31N43W.
.24 HOUR FORECAST FRONTAL TROUGH FROM 31N38W TO 24N43W. WITHIN 
AREA BOUNDED BY A LINE FROM 31N55W TO 31N35W TO 20N35W TO 15N55W 
TO 31N55W WINDS 20 KT OR LESS. SEAS TO 10 FT PRIMARILY IN NW 
SWELL.
.48 HOUR FORECAST TROUGH DIFFUSE. WITHIN AREA BOUNDED BY A LINE 
FROM 31N45W TO 31N35W TO 12N35W TO 07N50W TO 15N58W TO 20N40W TO 
31N45W WINDS 20 KT OR LESS. SEAS TO 8 FT PRIMARILY IN NW SWELL.

.ATLC S OF 09N BETWEEN 40W AND 51W WINDS 20 KT OR LESS. SEAS TO 
9 FT IN MIXED N AND SE SWELL. 
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.

.CARIBBEAN FROM 10.5N TO 16N BETWEEN 69W AND 78W NE TO E WINDS 
20 TO 25 KT. SEAS TO 9 FT.
.24 HOUR FORECAST S OF 14N BETWEEN 70W AND 76W NE TO E WINDS 20 
TO 30 KT. SEAS TO 9 FT.
.36 HOUR FORECAST FROM 10N TO 14N BETWEEN 70W AND 78W NE WINDS 
20 TO 30 KT. SEAS TO 11 FT.
.48 HOUR FORECAST S OF 13N BETWEEN 74W AND 80W NE WINDS 20 TO 30 
KT. SEAS TO 11 FT.

.CARIBBEAN COLD FRONT APPROACH YUCATAN CHANNEL. N OF 17N W OF 
82W S TO SW WINDS 20 TO 25 KT. SEAS TO 9 FT.
.12 HOUR FORECAST COLD FRONT FROM 22N83W TO 16N86W. W OF FRONT 
NW WINDS 20 TO 25 KT. SEAS TO 10 FT IN YUCATAN CHANNEL. N OF 20N 
E OF FRONT TO 79W SW WINDS 20 TO 25 KT. SEAS TO 8 FT. SCATTERED 
TSTMS IN LINES E OF FRONT. 
.24 HOUR FORECAST COLD FRONT FROM 21N79W TO 11N83W. W OF FRONT 
NW TO N WINDS 20 TO 25 KT. SEAS 9 TO 13 FT ACROSS YUCATAN BASIN.
.36 HOUR FORECAST COLD FRONT FROM 21N78W TO 09N81W. S OF 16N 
BETWEEN 80W AND 83W N WINDS 20 TO 30 KT. SEAS 8 TO 11 FT. 
ELSEWHERE W OF FRONT WINDS 20 KT OR LESS. SEAS TO 10 FT 
PRIMARILY IN NW SWELL.
.48 HOUR FORECAST STATIONARY FRONT FROM 21N74W TO 09N80W. S OF 
18N BETWEEN 79W AND 83W N WINDS 20 TO 25 KT. SEAS TO 9 FT.

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

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.