Irma is headed now NNW towards the Keys, and has regained CAT 4 status:
https://twitter.com/NHC_Atlantic/status ... 9047906304
Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 10th day of the month at 6:00Z
Agency: United States Air Force
Aircraft: Lockheed WC-130J Hercules with reg. number AF96-5302
Storm Number & Year: 11 in 2017
Storm Name: Irma (flight in the North Atlantic basin)
Mission Number: 29
Observation Number: 14 ( See all messages of this type for this mission. )
A. Time of Center Fix: 10th day of the month at 5:42:30Z
B. Center Fix Coordinates: 23°43'N 81°16'W (23.7167N 81.2667W)
B. Center Fix Location: 67 statute miles (108 km) to the SSE (151°) from Key West, FL, USA.
C. Minimum Height at Standard Level: 2,480m (8,136ft) at 700mb
D. Estimated (by SFMR or visually) Maximum Surface Wind Inbound: 101kts (~ 116.2mph)
E. Location of the Estimated Maximum Surface Wind Inbound: 10 nautical miles (12 statute miles) to the WSW (254°) of center fix
F. Maximum Flight Level Wind Inbound: From 339° at 113kts (From the NNW at ~ 130.0mph)
G. Location of Maximum Flight Level Wind Inbound: 10 nautical miles (12 statute miles) to the WSW (254°) of center fix
H. Minimum Sea Level Pressure: 930mb (27.47 inHg)
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 11°C (52°F) at a pressure alt. of 3,051m (10,010ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 19°C (66°F) at a pressure alt. of 3,049m (10,003ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 14°C (57°F)
K. Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Not Available
M. Eye Shape & Diameter: Circular with a diameter of 20 nautical miles (23 statute miles)
N. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
N. Fix Level: 700mb
O. Navigational Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 1 nautical mile
Remarks Section:
Maximum Outbound and Flight Level Wind: 128kts (~ 147.3mph) which was observed 15 nautical miles (17 statute miles) to the NE (49°) from the flight level center at 5:47:00Z
Dropsonde Surface Wind at Center: From 150° at 5kts (From the SSE at 6mph)