000
FZNT02 KNHC 210237
HSFAT2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC THU APR 21 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0000 UTC THU APR 21.
24 HOUR FORECAST VALID 0000 UTC FRI APR 22.
48 HOUR FORECAST VALID 0000 UTC SAT APR 23.

.WARNINGS.

...ATLC GALE WARNING...
.ATLC LOW PRES 23N62W 1010 MB. WITHIN 300 NM NE QUADRANT WINDS 
25 TO 35 KT. SEAS 10 TO 15 FT.
.18 HOUR FORECAST WINDS LESS THAN GALE FORCE. 

.SYNOPSIS AND FORECAST.

.ATLC EXCEPT AS NOTED IN WARNINGS WITHIN 540 NM NE SEMICIRCLE 
WINDS 20 TO 25 KT. SEAS 8 TO 11 FT. ELSEWHERE N OF 09N E OF 55W 
AND FROM 23N TO 30N BETWEEN 55W AND 71W NE TO E WINDS 20 KT. 
SEAS 8 TO 12 FT PRIMARILY IN MIXED NE AND E SWELL. SCATTERED 
TSTMS FROM 23N TO 28N E OF 73W.

.18 HOUR FORECAST LOW PRES 26N64W 1011 MB. N OF 26N BETWEEN 45W 
AND 63W NE TO E WINDS 20 TO 30 KT. SEAS 9 TO 14 FT IN NE SWELL.
ELSEWHERE FROM 20N TO 27N E OF 74W AND S OF 20N E OF 57W WINDS 
LESS THAN 20 KT. SEAS TO 9 FT IN IN MIXED NE AND E SWELL.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST TROUGH 31N57W TO LOW PRES 26N65W 1011 MB WITH 
TROUGH S TO 20N63W. W OF LOW AND TROUGH TO 74W N TO NE WINDS 20 
TO 30 KT. SEAS 8 TO 12 FT. N OF 22N WITHIN 480 NM E OF LOW AND 
TROUGH SE TO S WINDS 20 KT. SEAS TO 9 FT. ELSEWHERE S OF 24N E 
OF 52W NE TO E WINDS 20 KT. SEAS TO 9 FT IN NE SWELL.

.CARIBBEAN S OF 19N W OF 85W E TO SE WINDS 20 KT. SEAS LESS THAN 
8 FT. FROM 10N TO 13N BETWEEN 74W AND 77W N TO NE WINDS 20 KT. 
SEAS LESS THAN 8 FT.
.18 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.CARIBBEAN N OF 18N BETWEEN 73W AND 76W NE WINDS 20 KT. SEAS 
LESS THAN 8 FT. 
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST LITTLE CHANGE.

.GULF OF MEXICO FROM 20N TO 28N W OF 89W SE WINDS 20 KT. SEAS TO 
8 FT.
.24 HOUR FORECAST FROM 20N TO 27N BETWEEN 89W AND 96W SE WINDS 
20 KT. SEAS TO 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

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

$$
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.