danielwAdministrator
(Moderator)
Sun Aug 21 2011 08:48 AM
Re: Tropical Storm Irene Forms East of the Leeward Islands

Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 21st day of the month at 12:28Z
Aircraft: Air Force Aircraft (Last 3 digits of the tail number are 300)
Storm Number & Year: 09L in 2011
Storm Name: Irene (flight in the North Atlantic basin)
Mission Number: 2
Observation Number: 02
A. Time of Center Fix: 21st day of the month at 12:08:00Z
B. Center Fix Coordinates: 16°46'N 62°22'W (16.7667N 62.3667W) (View map)
B. Center Fix Location: 10 miles (16 km) between the W and WNW (281°) from Salem, Montserrat.
C. Minimum Height at Standard Level: 1,477m (4,846ft) at 850mb
D. Estimated (by SFMR or visually) Maximum Surface Wind: 36kts (~ 41.4mph)
E. Location of the Estimated Maximum Surface Wind: 33 nautical miles (38 statute miles) to the WNW/NW (304°) of center fix
F. Maximum Flight Level Wind Inbound: From 43° at 43kts (From the NE at ~ 49.5mph)
G. Location of Maximum Flight Level Wind Inbound: 43 nautical miles (49 statute miles) to the NW (307°) of center fix
H. Minimum Sea Level Pressure: 1006mb (29.71 inHg)
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 16°C (61°F) at a pressure alt. of 1,529m (5,016ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 17°C (63°F) at a pressure alt. of 1,524m (5,000ft)
K. Dewpoint Temp & Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Not Available
M. Eye Shape: Not Available
N. Fix Determined By: Penetration, Wind, Pressure and Temperature
N. Fix Levels (sfc and flt lvl centers are within 5nm of each other): Surface and 850mb
O. Navigation Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 3 nautical miles
Remarks Section:
Maximum Flight Level Wind: 43kts (~ 49.5mph) in the northwest quadrant at 11:48:00Z