aterpster:
at 8:00PM EDT, began descending from FL 380 to 340, and changed heading from 255 to 247. Groundspeed 464 knots.
at 8:14 PM EDT (time of the turbulence) was at FL 340 and a heading of 254. Groundspeed of 459 knots. (Had been at 482 knots at 8:09 PM.) Then ramped up the groundspeed to as high as 499 knots.
Began the descent into Denver at 9:07 PM; at FL 240 at 9:19PM; at FL 146 at 9:27 PM; at FL 54 at 9:35 PM; landed at 9:40 PM.
Doubt they could have been on the ground at MCI in 10 or 15 minutes.