I just got off of UA894 (A319) from EWR to DEN. It was a bumpy ride most of the way, and I surprised and how quickly we descended from cruise. I pulled up Flight Aware and saw that we spent a couple minutes at over 5,000 fpm.
https://flightaware.com/live/flight/.../KDEN/tracklog
Any idea what could've caused this? It was pretty jarring. Was it just turbulence avoidance?