000
FZNT02 KNHC 210331
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC SUN AUG 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

PAN PAN

ATLANTIC FROM 07N TO 31N W OF 35W INCLUDING CARIBBEAN SEA AND 
GULF OF MEXICO

SYNOPSIS VALID 0000 UTC SUN AUG 21.
24 HOUR FORECAST VALID 0000 UTC MON AUG 22.
48 HOUR FORECAST VALID 0000 UTC TUE AUG 23.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM IRENE NEAR 15.3N 59.9W 1006 MB AT 0300 UTC AUG
21 MOVING W OR 280 DEG AT 19 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S
SEMICIRCLE...105 NM NE QUADRANT AND 45 NM NW QUADRANT.SEAS 12
FT OR GREATER WITHIN 0 NM S SEMICIRCLE...360 NM NE QUADRANT AND
45 NM NW QUADRANT WITH SEAS TO 13 FT.
.24 HOUR FORECAST TROPICAL STORM IRENE NEAR 16.6N 65.9W. MAXIMUM
SUSTAINED WINDS 55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS
WITHIN 45 NM S SEMICIRCLE...105 NM NE QUADRANT AND 75 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM NE...90 NM 
NW...AND 45 NM S SEMICIRCLE WITH SEAS TO 15 FT.
.48 HOUR FORECAST HURRICANE IRENE NEAR 18.0N 70.7W. MAXIMUM
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS
WITHIN 90 NM NW AND SE QUADRANTS...120 NM NE QUADRANT AND 60 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 300 NM NE...120 NM 
NW...90 NM SE...60 NM SW QUADRANTS WITH SEAS TO 18 FT.
.72 HOUR FORECAST TROPICAL STORM IRENE NEAR 19.5N 75.0W. MAXIMUM
SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRENE INLAND NEAR 21.5N 78.0W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM IRENE OVER WATER NEAR 24.5N
80.5W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.

.SYNOPSIS AND FORECAST.

.ATLC FROM 18N TO 27N E OF 42W NE TO E WINDS 20 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 20N TO 30N E OF 42W NE TO E WINDS 20 KT. 
SEAS TO 8 FT.
.48 HOUR FORECAST TROUGH FROM 15N TO 24N ALONG 35W. FROM 20N TO 
30N E OF 42W NE TO E WINDS 20 TO 25 KT. SEAS TO 10 FT PRIMARILY 
IN E SWELL.

.ATLC/CARIBBEAN EXCEPT AS NOTED IN IRENE WARNING...WITHIN 480 NM 
NW AND 600 NM NE QUADRANTS AND WINDS 20 TO 33 KT. SEAS 8 TO 11 
FT. 
.24 HOUR FORECAST EXCEPT AS NOTED IN IRENE WARNING...WITHIN 480 
NM NW...600 NM NE...330 NM SE...AND 210 NM SW QUADRANTS WINDS 20 
TO 33 KT. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST EXCEPT AS NOTED IN IRENE WARNING...WITHIN 510 
NM N SEMICIRCLE...270 SE AND 180 NM SW QUADRANTS WINDS 20 TO 33 
KT. SEAS 8 TO 11 FT.  

.CARIBBEAN S OF 18N W OF 85W E TO SE WINDS 20 KT. SEAS 8 TO 10 
FT.
.18 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.GULF OF MEXICO 12 HOUR FORECAST TROUGH S OF 20N ALONG 92W. 
WITHIN 60 NM OF TROUGH NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST TROUGH S OF 20N ALONG 94W. WITHIN 600 NM OF 
TROUGH NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT.
.48 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 AL. NATIONAL HURRICANE CENTER.