Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 157
Other / Unknown
Deviation - Altitude Excursion From Assigned Altitude; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Flight Deck / Cabin / Aircraft Event Illness / Injury; Inflight Event / Encounter Weather / Turbulence
General Physical Injury / Incapacitation
Weather
We encountered severe turbulence on descent from FL240 - FL200. It was reported by ATC as moderate about 20 seconds prior to entering the turbulence.  After receiving the weather report from ATC; the Captain immediately turns the Fasten Seatbelt sign on and made a PA.While he was making the PA we entered the turbulence around FL240. The turbulence we encountered fit the book definition of severe turbulence. Some navigational deviation as well as altitude deviations may have occurred during the turbulence episode. One Flight Attendant was taken to the hospital for evaluation.Earlier warnings by ATC if they have the information.
An aircrew while on descent for landing encountered severe turbulence. One flight attendant was injured enough to require hospital care. The reporter stated that earlier warning by ATC would have been helpful.