000
FZNT02 KNHC 211000
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SUN AUG 21.
24 HOUR FORECAST VALID 0600 UTC MON AUG 22.
48 HOUR FORECAST VALID 0600 UTC TUE AUG 23.

.WARNINGS.

...HURRICANE WARNING...
.TROPICAL STORM IRENE NEAR 16.4N 61.3W 1006 MB AT 0900 UTC AUG
21 MOVING W OR 280 DEG AT 18 KT. MAXIMUM SUSTAINED WINDS 45 KT
GUSTS 55 KT. TROPICAL STORM FORCE WINDS WITHIN 0 NM S
SEMICIRCLE...130 NM NE QUADRANT AND 80 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 18 FT.
.24 HOUR FORECAST TROPICAL STORM IRENE NEAR 17.5N 66.7W. MAXIMUM
SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE WINDS
WITHIN 50 NM S SEMICIRCLE...130 NM NE QUADRANT AND 90 NM NW 
QUADRANT. SEAS 12 FT OR GREATER IN AREA OF TROPICAL STORM FORCE 
WINDS WITH SEAS TO 18 FT.
.48 HOUR FORECAST TROPICAL STORM IRENE INLAND NEAR 18.6N 71.5W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM FORCE
WINDS WITHIN 140 NM NE QUADRANT...90 NM SE QUADRANT...60 NM SW 
QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER IN AREA 
OF TROPICAL STORM FORCE WINDS WITH SEAS TO 15 FT.
.72 HOUR FORECAST TROPICAL STORM IRENE INLAND NEAR 20.3N 75.3W.
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM IRENE OVER WATER NEAR 22.8N
78.2W. MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
.120 HOUR FORECAST HURRICANE IRENE INLAND NEAR 26.1N 80.7W.
MAXIMUM SUSTAINED WINDS 75 KT GUSTS 90 KT.

.SYNOPSIS AND FORECAST.

.ATLC FROM 20N TO 27N E OF 37W NE TO E WINDS 20 KT. SEAS TO 8 FT.
.24 HOUR FORECAST FROM 21N TO 28N E OF 42W NE TO E WINDS 20 KT. 
SEAS TO 8 FT.
.48 HOUR FORECAST LOW PRES NEAR 22N38W 1010 MB. WITHIN 480 NM N 
SEMICIRLCE WINDS 20 TO 25 KT. SEAS 8 TO 11 FT.

.ATLC/CARIBBEAN EXCEPT AS NOTED IN IRENE WARNING...WITHIN 540 NM 
N SEMICIRCLE WINDS 20 TO 33 KT. SEAS 8 TO 11 FT. 
.24 HOUR FORECAST EXCEPT AS NOTED IN IRENE WARNING...WITHIN 210 
NM NW...480 NM NE...240 NM SE...AND 180 NM SW QUADRANTS WINDS 20 
TO 33 KT. SEAS 8 TO 11 FT. 
.48 HOUR FORECAST EXCEPT AS NOTED IN IRENE WARNING...WITHIN 480 
NM N SEMICIRCLE...180 S SEMICIRCLE 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.
.12 HOUR FORECAST WINDS LESS THAN 20 KT. SEAS LESS THAN 8 FT.

.GULF OF MEXICO 06 HOUR FORECAST TROUGH S OF 20N ALONG 93W. 
WITHIN 60 NM OF TROUGH NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST TROUGH S OF 20N ALONG 95W. WITHIN 60 NM OF 
TROUGH NE TO E WINDS 20 KT. SEAS LESS THAN 8 FT.
.42 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 CHRISTENSEN. NATIONAL HURRICANE CENTER.