B737-800 captain and dispatcher reported a severe mountain wave encounter over the rocky mountains.

Attributes
ACN	1409429
Time
Date	201612
Local Time Of Day	0601-1200
Environment
Light	Dawn
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Cruise
Flight Plan	IFR
Person 1
Function	Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Dispatcher
Qualification	Dispatch Dispatcher
Events
Anomaly	Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Illness Inflight Event / Encounter Weather / Turbulence

Narrative:

Cruising FL370 in the clear [and] encountered severe mountain wave turbulence. During encounter momentary low speed stick shaker. After landing #2 flight attendant reported an injured shoulder. No other reports of injuries or aircraft cabin damage. After landing noted turbulence in logbook and called maintenance to inform them of the event.

Original NASA ASRS Text

Title: B737-800 Captain and Dispatcher reported a severe mountain wave encounter over the Rocky Mountains.

Narrative: Cruising FL370 in the clear [and] encountered severe mountain wave turbulence. During encounter momentary low speed stick shaker. After landing #2 FA reported an injured shoulder. No other reports of injuries or aircraft cabin damage. After landing noted turbulence in logbook and called Maintenance to inform them of the event.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.