Hurricane Irene over the Turks and Caicos Islands

Product: NOAA Vortex Message (URNT12 KWBC)
Transmitted: 23rd day of the month at 23:17Z
Aircraft: Lockheed WP-3D Orion (Reg. Num. N42RF)
Storm Number: 09
Storm Name: Irene (flight in the North Atlantic basin)
Mission Number: 10
Storm Number & Year: 09L in 2011
Observation Number: 36
A. Time of Center Fix: 23rd day of the month at 22:42Z
B. Center Fix Coordinates: 21Â°2'N 71Â°45'W (21.0333N 71.75W)
B. Center Fix Location: 49 miles (79 km) to the SW (233Â°) from Cockburn Town, Turks and Caicos Islands (GBR).
C. Minimum Height at Standard Level: Not Available
D. Estimated (by SFMR or visually) Maximum Surface Wind: 67kts (~ 77.1mph)
E. Location of the Estimated Maximum Surface Wind: 15 nautical miles (17 statute miles) to the WNW (284Â°) of center fix
F. Maximum Flight Level Wind Inbound: From 26Â° at 81kts (From the NNE at ~ 93.2mph)
G. Location of Maximum Flight Level Wind Inbound: 27 nautical miles (31 statute miles) to the WNW (291Â°) of center fix
H. Minimum Sea Level Pressure: 969mb (28.61 inHg)
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 15Â°C (59Â°F) at a pressure alt. of 2,438m (7,999ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 20Â°C (68Â°F) at a pressure alt. of 2,418m (7,933ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 14Â°C (57Â°F)
K. Sea Surface Temp (collected at same location as temp inside eye): Not Available
L. Eye Character: Open in the south
M. Eye Shape & Diameter: Circular with a diameter of 35 nautical miles (40 statute miles)
N. Fix Determined By: Penetration, Radar, Wind, Pressure and Temperature
N. Fix Level: Other - Not surface, 1500ft, 925mb (if vortex is newer than about mid 90's; see note for more), 850mb, 700mb, 500mb, 400mb, 300mb or 200mb
O. Navigation Fix Accuracy: 1 nautical mile
O. Meteorological Accuracy: 1 nautical mile
Remarks Section - Remarks That Were Decoded...
Maximum Flight Level Wind: 81kts (~ 93.2mph) in the northwest quadrant at 22:35Z
Remarks Section - Additional Remarks...
CENTER DROP SPLASHED AT 20 KT

Outside/ Inside Temp Spread is 5C
Inside Temp/ Dewpoint Spread is 6C
With an Open Eye Wall. The spreads should begin to increase shortly.
Convection is consolidating and Dmax is about 6 hours from now.
Dmax is the Diurnal Maximum near Sunrise. Whereas Dmin is the Diurnal Minimum near Sunset.

Edited by danielw (Tue Aug 23 2011 10:28 PM)

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