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NOAA NOAA United States Department of Commerce

High Seas Forecast (Tropical Atlantic)



000
FZNT02 KNHC 190954
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL 
1030 UTC WED DEC 19 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC WED DEC 19.
24 HOUR FORECAST VALID 0600 UTC THU DEC 20.
48 HOUR FORECAST VALID 0600 UTC FRI DEC 21.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC 36 HOUR FORECAST NW OF LINE FROM 31N71W TO 25N80W SE 
TO S WINDS 20 TO 30 KT. SEAS 8 TO 10 FT.
.48 HOUR FORECAST COLD FRONT APPROACH 31N81W. NW OF LINE FROM 
31N75W TO 27N80W S TO SW WINDS 30 TO 35 KT. SEAS 9 TO 17 FT. 
ELSEWHERE NW OF LINE FROM 31N69W TO 23N81W S WINDS 20 TO 30 KT. 
SEAS TO 11 FT. SCATTERED TO NUMEROUS TSTMS NEAR FRONT.

...GULF OF MEXICO GALE WARNING...
.GULF OF MEXICO 24 HOUR FORECAST COLD FRONT FROM 30N90W TO 
18N95W. S OF 26N E OF FRONT S TO SW WINDS 20 TO 25 KT. SEAS LESS 
THAN 8 FT. SCATTERED TSTMS E OF FRONT.
.36 HOUR FORECAST COLD FRONT FROM 30N85W TO 21N88W. E OF FRONT S 
TO SW WINDS 20 TO 30 KT. SEAS TO 11 FT. N OF 25N W OF 91W NW 
WINDS 30 TO 35 KT. SEAS 10 TO 13 FT. ELSEWHERE N OF 22N W OF 92W 
W TO NW WINDS 20 TO 30 KT. SEAS TO 11 FT. SCATTERED TO NUMEROUS 
TSTMS E OF FRONT.
.48 HOUR FORECAST COLD FRONT FROM 30N82W TO 23N83W. FROM 24N TO 
30N W OF FRONT TO 94W W TO NW WINDS 30 TO 35 KT. SEAS 12 TO 20 
FT. ELSEWHERE W TO NW WINDS 20 TO 30 KT. SEAS 8 TO 14 FT. 
SCATTERED TO NUMEROUS TSTMS NEAR FRONT. 

.SYNOPSIS AND FORECAST.

.ATLC TROUGH FROM 31N53W TO 23N67W. N OF 27N WITHIN 300 NM E OF 
TROUGH SW WINDS 20 TO 25 KT. SEAS 8 TO 12 FT. ELSEWHERE N OF 
LINE FROM 31N34W TO 27N59W TO 31N71W WINDS 20 KT OR LESS. SEAS 8 
TO 11 FT IN NW SWELL.
.24 HOUR FORECAST COLD FRONT FROM 31N45W TO 24N57W. N OF LINE 
FROM 31N35W TO 24N56W TO 25N66W WINDS 20 KT OR LESS. SEAS 8 TO 
14 FT IN NW SWELL.
.48 HOUR FORECAST WEAKENING COLD FRONT FROM 31N39W TO 25N48W. N 
OF LINE FROM 24N35W TO 18N52W TO 27N57W WINDS 20 KT OR LESS. 
SEAS 8 TO 11 FT IN NW SWELL.

.ATLC S OF LINE FROM 15N35W TO 10N53W WINDS 20 KT OR LESS. SEAS 
8 TO 9 FT IN MIXED N AND SE SWELL.
.24 HOUR FORECAST S OF 11N BETWEEN 36W AND 54W WINDS 20 KT OR 
LESS. SEAS 8 TO 9 FT IN MIXED N AND SE SWELL. 
.48 HOUR FORECAST S OF 10N BETWEEN 45W AND 54W WINDS 20 KT OR 
LESS. SEAS 8 FT IN MIXED N AND SE SWELL.   

.CARIBBEAN FROM 10.5N TO 14N BETWEEN 73W AND 78W NE TO E WINDS 
20 TO 30 KT. SEAS 8 TO 10 FT.
.24 HOUR FORECAST FROM 10.5N TO 15N BETWEEN 71W AND 78W NE TO E 
WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.48 HOUR FORECAST FROM 12.5N TO 14.5N BETWEEN 70W AND 74W NE TO 
E WINDS 20 TO 25 KT. SEAS TO 8 FT.

.CARIBBEAN 24 HOUR FORECAST W OF 85W SE TO S WINDS 20 TO 25 KT. 
SEAS LESS THAN 8 FT.
.48 HOUR FORECAST COLD FRONT FROM 23N83W TO 16N87W. NW OF FRONT 
NW WINDS 20 TO 25 KT. SEAS TO 10 FT YUCATAN CHANNEL. SCATTERED 
TSTMS NEAR FRONT. 

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

$$
.FORECASTER MUNDELL. NATIONAL HURRICANE CENTER.