Large Transport; Low Wing; 2 Turbojet Eng
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 5
Situational Awareness
Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance; Inflight Event / Encounter Weather / Turbulence
Air Traffic Control Issued New Clearance; Flight Crew Took Evasive Action
Weather
Aircraft X keyed up; unable to hold altitude. I gave him a descent clearance and asked if it was because of severe turbulence (we had no reports of severe but it was near the Rockies and we had light to moderate chop in places). He said yes. He leveled off at FL290 and diverted to Denver to check the aircraft for damage and reported no injuries.
ZDV Center Controller reported a pilot needed an immediate descent due to severe turbulence.