000
FZNT02 KNHC 202056
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
2230 UTC THU OCT 20 2011

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 OCT 20.
24 HOUR FORECAST VALID 1800 UTC FRI OCT 21.
48 HOUR FORECAST VALID 1800 UTC SAT OCT 22.

.WARNINGS.

.NONE.

.SYNOPSIS AND FORECAST.

.ATLC COLD FRONT 31N71W TO 21N77W. N OF 27N W OF FRONT W WINDS 
20 KT. SEAS TO 11 FT IN NW SWELL. S OF 27N W OF FRONT N WINDS 20 
KT. SEAS LESS THAN 8 FT. N OF 27N WITHIN 240 NM E OF FRONT SE TO 
S WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.
.24 HOUR FORECAST FRONTAL TROUGH 31N70W TO 21N76W. S OF 27N W OF 
TROUGH N WINDS 20 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST FRONTAL TROUGH 31N72W TO 22N77W. S OF 27N W OF 
TROUGH N TO NE WINDS 20 KT. SEAS LESS THAN 8 FT.

.ATLC N OF 28N BETWEEN 38W AND 60W NE TO E WINDS 20 TO 25 KT. 
SEAS 8 TO 10 FT.
.24 HOUR FORECAST N OF 23N BETWEEN 35W AND 62W E WINDS 20 KT. 
SEAS TO 11 FT IN E SWELL.
.48 HOUR FORECAST N OF 23N BETWEEN 35W AND 65W E TO SE WINDS 20 
KT. SEAS TO 9 FT IN E SWELL.

.ATLC TROUGH 10N55W TO 19N35W. E OF 40W WITHIN 180 NM S OF 
TROUGH S TO SW WINDS 20 KT. SEAS TO 8 FT. ISOLATED TSTMS E OF 
45W WITHIN 180 NM S OF TROUGH.
.24 HOUR FORECAST TROUGH 12N55W TO 14N44W TO 22N35W. E OF 40W 
WITHIN 180 NM S OF TROUGH S TO SW WINDS 20 KT. SEAS TO 8 FT. 
.48 HOUR FORECAST TROUGH 15N48W TO 19N35W. WITHIN 180 NM N OF 
TROUGH NE WINDS 20 KT. SEAS TO 8 FT. 

.CARIBBEAN FRONTAL TROUGH 21N77W TO LOW PRES 15N80W 1010 MB WITH 
TROUGH S TO 11N80W. W OF TROUGH AND LOW NW TO N WINDS 20 KT. 
SEAS TO 8 FT. SCATTERED TSTMS S OF 18N BETWEEN 80W AND 85W.
.24 HOUR FORECAST FRONTAL TROUGH 21N76W TO 15N83W AND LOW PRES 
13N80W 1010 MB. W OF TROUGH AND LOW NW TO N WINDS 20 KT. SEAS TO 
8 FT. SCATTERED TSTMS S OF 17N BETWEEN 80W AND 85W.
.48 HOUR FORECAST FRONTAL TROUGH 22N77W TO 16N85W AND LOW PRES 
NEAR 12N81W 1009 MB. NW OF TROUGH NE WINDS 20 KT. SEAS TO 8 FT. 
WITHIN 90 NM W OF LOW NW TO N WINDS 20 KT. SEAS TO 8 FT.

.GULF OF MEXICO N OF 24N E OF 88W AND S OF 24N E OF 94W WINDS 
LESS THAN 20 KT. SEAS TO 10 FT PRIMARILY IN NW SWELL.
.18 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT. 

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

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.