Incident Overview
According to the captain, the aircraft experienced a moderate bump of turbulence lasting about one second. The airplane was skimming a broken layer of clouds with approximately 2,000 feet of vertical buildup. The preparation for landing public address had been given about six minutes before the turbulence encounter.
Crew Actions
The captain stated there was nothing on the radar or visual observation of the sky condition to suggest more than light turbulence. The number one flight attendant reported that the captain told the flight attendants there might be turbulence ahead and instructed them to clean up and sit down. She stated they were in the process of cleaning up when "it got really bad," and she had to hold onto the seatback. She saw the number two flight attendant's legs extending into the aisle.
Injuries and Response
The number one flight attendant stated that the number two flight attendant had fallen onto her ankle, and she helped her into her seat. At the gate, emergency personnel put a splint on her ankle and transported her to the hospital, where it was later discovered that her ankle was broken.