danielwAdministrator
(Moderator)
Tue Jul 09 2013 08:33 AM
Re: Chantal Moves Toward the Caribbean

Circulation appears to be intact after passing over Barbados.
Latest Vortex. 1218Z or 8:18 AM EDT

Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 9th day of the month at 12:18Z
Aircraft: Air Force Aircraft (Last 3 digits of the tail number are 302)
Storm Number & Year: 03L in 2013
Storm Name: Chantal (flight in the North Atlantic basin)
Mission Number: 2
Observation Number: 03
A. Time of Center Fix: 9th day of the month at 12:04:10Z
B. Center Fix Coordinates: 13°52'N 60°19'W (13.8667N 60.3167W)
B. Center Fix Location: 46 miles (74 km) to the ESE (102°) from Castries, Saint Lucia.
C. Minimum Height at Standard Level: Not Available
D. Estimated (by SFMR or visually) Maximum Surface Wind: 52kts (~ 59.8mph)
E. Location of the Estimated Maximum Surface Wind: 25 nautical miles (29 statute miles) to the N (356°) of center fix
F. Maximum Flight Level Wind Inbound: From 80° at 64kts (From the E at ~ 73.6mph)
G. Location of Maximum Flight Level Wind Inbound: 25 nautical miles (29 statute miles) to the N (358°) of center fix
H. Minimum Sea Level Pressure: 1003mb (29.62 inHg) - Extrapolated
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 21°C (70°F) at a pressure alt. of 391m (1,283ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 23°C (73°F) at a pressure alt. of 363m (1,191ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 23°C (73°F)
K. 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 and Temperature
N. Fix Level: 1,500 feet
O. Navigational Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 2 nautical miles
Remarks Section:
Maximum Flight Level Wind: 64kts (~ 73.6mph) which was observed 25 nautical miles (29 statute miles) to the N (358°) from the flight level center at 11:52:00Z emphasis added~danielw
Sea Level Pressure Extrapolation From: Below 1,500 feet
Maximum Flight Level Temp: 24°C (75°F) which was observed 7 nautical miles to the NNE/NE (34°) from the flight level center