000
FZNT02 KNHC 270956
HSFAT2

HIGH SEAS FORECAST 
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC SAT AUG 27 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 0600 UTC SAT AUG 27.
24 HOUR FORECAST VALID 0600 UTC SUN AUG 28.
48 HOUR FORECAST VALID 0600 UTC MON AUG 29.

.WARNINGS.

...TROPICAL STORM WARNING...
.HURRICANE IRENE N OF AREA NEAR 34.1N 76.5W 952 MB AT 0900 UTC 
AUG 27 MOVING NNE OR 020 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS 
80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS WITHIN 225 NM E 
SEMICIRCLE AND 140 NM W SEMICIRCLE. SEAS 12 FT OR GREATER OVER 
FORECAST WATERS WITHIN 360 NM E SEMICIRCLE AND 320 NM SW QUADRANT
WITH SEAS TO 19 FT.
.24 HOUR FORECAST HURRICANE IRENE WELL N OF AREA NEAR 38.4N 
74.6W. MAXIMUM SUSTAINED WINDS 70 KT GUSTS 85 KT. LITTLE CHANGE 
IN RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR 
GREATER. SEAS TO 14 FT OVER FORECAST WATERS N OF 28N BETWEEN 69W 
AND 78W.. 
.48 HOUR FORECAST POST TROPICAL EXTRATROPICAL IRENE NEAR 46.3N 
69.6W. MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT. TROPICAL STORM 
FORCE WINDS WITHIN 210 NM E SEMICIRCLE...70 NM SW QUADRANT AND 
125 NM NW QUADRANT. SEAS 8 TO 12 FT ALONG 31N BETWEEN 63W AND
68W.
.72 HOUR FORECAST POST TROPICAL EXTRATROPICAL IRENE NEAR 54.0N 
59.0W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST POST TROPICAL EXTRATROPICAL IRENE NEAR 57.0N 
41.0W. MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
.120 HOUR FORECAST POST TROPICAL EXTRATROPICAL IRENE NEAR 58.0N 
23.0W. MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT.

.SYNOPSIS AND FORECAST.

.ATLC...EXCEPT AS NOTED IN WARNINGS...ELSEWHERE N OF 27N BETWEEN
69W AND 77W WINDS 20 TO 33 KT. SEAS 8 TO 12 FT. N OF 27N W OF 77W
SW TO W WINDS 20 KT. SEAS TO 8 FT. FROM 24N TO 27N BETWEEN 
BAHAMAS AND 70W S TO SW WINDS TO 20 KT. SEAS TO 8 FT IN NW SWELL.
.24 HOUR FORECAST N OF 28N BETWEEN 69W AND 78W S TO SW WINDS 20 
TO 25 KT. SEAS 9 TO 14 FT IN MIXED SE AND NW SWELL. N OF 28N 
W OF 78W SW TO W WINDS TO 20 KT. SEAS LESS THAN 8 FT. ELSEWHERE
N OF 25N BETWEEN 69W AND 76W S TO SW WINDS 20 KT. SEAS 8 TO 10 FT
IN MIXED NW AND SE SWELL.
.48 HOUR FORECAST N OF 26N BETWEEN 63W AND 77W S TO SW WINDS 20 
KT. SEAS 8 TO 10 FT IN MIXED SE AND NW SWELL BETWEEN 63W AND 68W
AND TO 8 FT BETWEEN 68W AND 77W.

.ATLC LOW...REMNANTS OF TROPICAL DEPRESSION TEN...JUST E OF AREA 
NEAR 17N34W 1011 MB MOVING NW 07 KT. FROM 16N TO 23N E OF 39W N 
TO NE WINDS 20 TO 25 KT. SEAS 8 TO 10 FT. ELSEWHERE FROM 13N TO 
23N E OF 42W WINDS LESS THAN 20 KT. SEAS TO 9 FT PRIMARILY IN NE 
SWELL.
.24 HOUR FORECAST WEAKENING LOW NEAR 18N36W 1012 MB. WITHIN 240 
NM NW QUADRANT OF LOW N TO NE WINDS 20 TO 25 KT. SEAS 8 TO 10 
FT. ELSEWHERE FROM 15N TO 23N E OF 41W WINDS LESS THAN 20 KT. 
SEAS TO 8 FT IN MIXED NE AND SE SWELL.
.48 HOUR FORECAST DISSIPATING LOW NEAR 18N37W 1012 MB. TROUGH TO
EXTEND FROM 24N35W TO LOW AND TO 15N40W. FROM 18N TO 24N BETWEEN
37W AND 42W NE WINDS 20 KT. SEAS TO 8 FT. FROM 18N TO 24N E OF 
TROUGH SE WINDS TO 20 KT. SEAS LESS THAN 8 FT.

.ATLC LOW NEAR 28N63W 1011 MB MOVING NW AT 10 KT. WITHIN 180 NM
E SEMICIRCLE WINDS 20 TO 25 KT. SEAS TO 9 FT. FROM 26N TO 30N 
BETWEEN 54W AND 60W E TO SE WINDS 20 TO 25 KT. SEAS 8 FT.
.24 HOUR FORECAST LOW NEAR 29N65W 1012 MB. WITHIN 180 NM NE 
SEMICIRCLE WINDS 20 KT. SEAS TO 8 FT.
.36 HOUR FORECAST LOW DISSIPATED. WINDS LESS THAN 20 KT. SEAS 
LESS THAN 8 FT. 

.CARIBBEAN S OF 14N BETWEEN 67W AND 72W E TO SE WINDS 20 KT. 
SEAS LESS THAN 8 FT.
.24 HOUR FORECAST LITTLE CHANGE.
.48 HOUR FORECAST S OF 17N BETWEEN 64W AND 76W E TO SE 20 KT.
SEAS LESS THAN 8 FT.

.GULF OF MEXICO N OF 26N E OF 87W W TO NW WINDS TO 20 KT. SEAS 
LESS THAN 8 FT.
.24 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 AGUIRRE. NATIONAL HURRICANE CENTER.