danielwAdministrator
(Moderator)
Sun Aug 25 2013 07:35 PM
Re: Tropical Storm Fernand in the Bay of Campeche`

RECON Vortex.
Impressive system.

Product: Air Force Vortex Message (URNT12 KNHC)
Transmitted: 25th day of the month at 23:00Z
Aircraft: Air Force Aircraft (Last 3 digits of the tail number are 309)
Mission Purpose: Investigate second suspect area (flight in the North Atlantic basin)
Mission Number: 1
Observation Number: 06
A. Time of Center Fix: 25th day of the month at 22:31:10Z
B. Center Fix Coordinates: 19°06'N 95°43'W (19.1N 95.7167W)
B. Center Fix Location: 198 miles (319 km) to the WNW (293°) from Villahermosa, Tabasco, México.
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: 18 nautical miles (21 statute miles) to the NNW (348°) of center fix
F. Maximum Flight Level Wind Inbound: From 63° at 42kts (From the ENE at ~ 48.3mph)
G. Location of Maximum Flight Level Wind Inbound: 18 nautical miles (21 statute miles) to the NNW (348°) of center fix
H. Minimum Sea Level Pressure: 1003mb (29.62 inHg) - Extrapolated
I. Maximum Flight Level Temp & Pressure Altitude Outside Eye: 18°C (64°F) at a pressure alt. of 491m (1,611ft)
J. Maximum Flight Level Temp & Pressure Altitude Inside Eye: 23°C (73°F) at a pressure alt. of 501m (1,644ft)
K. Dewpoint Temp (collected at same location as temp inside eye): 18°C (64°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, Radar, Wind, Pressure and Temperature
N. Fix Level: 1,500 feet
O. Navigational Fix Accuracy: 0.02 nautical miles
O. Meteorological Accuracy: 3 nautical miles
Remarks Section:
Maximum Flight Level Wind: 42kts (~ 48.3mph) which was observed 18 nautical miles (21 statute miles) to the NNW (348°) from the flight level center at 22:24:30Z
Sea Level Pressure Extrapolation From: Below 1,500 feet

bold emphasis added~danielw