Flight Deck / Cabin / Aircraft Event Illness / Injury; Inflight Event / Encounter Weather / Turbulence
General Physical Injury / Incapacitation
Weather; Environment - Non Weather Related
I was Flight Attendant (FA) 3; and Flight Attendant 2 was also present. There were 4 people total in the aft galley and all of a sudden the turbulence hit. The female passenger went down first and she put her leg out to catch herself and when she did that she caught my leg and I was not able to brace myself. When I went to the ground I went backward and landed up on my bottom hitting extremely hard and hurting my back immediately. Flight Attendant 2 slid against the aft right door. The other passenger was coming out of the lav. Both passengers appeared to be ok. The captain came over the PA and told everyone to put on seatbelts. It took me a while to get up off the floor because of how I felt. I then called the purser and notified her of all us in the back and told her to notify the cockpit. After that the captain called back and first spoke to Flight Attendant 2 and then the captain wanted to speak to me and I said I did appear to hurt my back. He apologized because they did not see this coming and captain said it was 'wake' turbulence and mountain turbulence and he said it was so hard that it took the airplane off autopilot. He had us sit the remainder of the flight because we didn't have to much further to landing.
A Flight Attendant reported being injured by unexpected turbulence.