No longer concentric eyewalls:

Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 25th day of the month at 03:19Z
Aircraft: Air Force Aircraft (Last 3 digits of the tail number are 302)
Storm Number & Year: 09L in 2011
Storm Name: Irene (flight in the North Atlantic basin)
Mission Number: 17
Observation Number: 16
A. Time of Center Fix: 25th day of the month at 3:07:20Z
B. Center Fix Coordinates: 23Â°50'N 75Â°35'W (23.8333N 75.5833W)
B. Center Fix Location: 140 miles (225 km) to the SE (128Â°) from Nassau, Bahamas.
C. Minimum Height at Standard Level: 2,685m (8,809ft) at 700mb
D. Estimated (by SFMR or visually) Maximum Surface Wind: 71kts (~ 81.7mph)
E. Location of the Estimated Maximum Surface Wind: 22 nautical miles (25 statute miles) to the WNW (292Â°) of center fix
F. Maximum Flight Level Wind Inbound: From 45Â° at 90kts (From the NE at ~ 103.6mph)
G. Location of Maximum Flight Level Wind Inbound: 28 nautical miles (32 statute miles) to the WNW (296Â°) of center fix
H. Minimum Sea Level Pressure: 953mb (28.14 inHg)
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 8Â°C (46Â°F) at a pressure alt. of 3,048m (10,000ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 16Â°C (61Â°F) at a pressure alt. of 3,045m (9,990ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 13Â°C (55Â°F)
K. Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Open in the west
M. Eye Shape & Diameter: Circular with a diameter of 8 nautical miles
N. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
N. Fix Level: 700mb
O. Navigation Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 0.1 nautical miles
Remarks Section:
Maximum Flight Level Wind: 99kts (~ 113.9mph) in the northeast quadrant at 1:41:00Z
Maximum Flight Level Temp: 16Â°C (61Â°F) which was observed 10 nautical miles (12 statute miles) to the W/WNW (281Â°) from the flight level center