AN A319 EXPERIENCED MODERATE TO SEVERE TURB WITH NO WARNING; RESULTING IN 2 CABIN ATTENDANTS BEING INJURED; DURING APCH TO RIC.

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DURING DSCNT; FLT ATTENDANTS IN AFT GALLEY AREA WERE DISPLACED BY TURB ASSOCIATED WITH CONVECTIVE ACTIVITY S OF OUR COURSE. SEAT BELT SIGN HAD BEEN TURNED ON EARLIER IN ANTICIPATION OF CHOP; ALTHOUGH ATC HAD TOLD US PREVIOUS ACFT HAD BEEN SMOOTH THROUGHOUT THE AREA AT OUR ALT. RADAR PAINTED GREEN AND YELLOW RETURNS TO THE S OF OUR COURSE; AND PRIOR TO THE SINGULAR JOLT OF TURB; OUR RIDE HAD BEEN ONLY LIGHT CHOP. WITHIN 1-2 MI OF OUR JOLT; WE STARTED GETTING DOPPLER RETURNS SLIGHTLY R OF OUR COURSE; FOLLOWED BY THE JOLT THAT DISPLACED THE FLT ATTENDANT #1. THE JOLT WAS SIGNIFICANT. I CALLED FLT ATTENDANT ON THE INTERPHONE AND DIDN'T GET A RESPONSE BECAUSE HE HAD TAKEN A SEAT IN THE CABIN. I CALLED THE AFT GALLEY; AND ONE FLT ATTENDANT ANSWERED AND SAID THAT THEY WERE OK; BUT THAT SHE HAD HIT HER HEAD DURING THE EVENT. LATER I WAS ABLE TO CONTACT #1 FLT ATTENDANT; AND HE WAS OK. THE FLT PROCEEDED UNEVENTFULLY. ON THE WALK TO THE HOTEL VAN; BOTH AFT GALLEY FLT ATTENDANTS MENTIONED POSSIBLE INJURIES FROM THE EVENT. THE ONE WHO HAD HIT HER HEAD HAD A VISIBLE BRUISE ON HER SCALP. THE OTHER FLT ATTENDANT FEARED SHE HAD RE-STRESSED HER PREVIOUSLY INJURED SHOULDER. DURING THE NIGHT; THE FLT ATTENDANT WHO HAD HIT HER HEAD; WENT TO AN ALL NIGHT CLINIC WHERE THEY PRESCRIBED HER PAIN KILLERS; TOLD HER SHE HAD STRAINED HER NECK AND SHOULDER; AND CHKED HER COGNITIVE FUNCTION AS OK. SHE WAS DISPLACED FOR THE OUTBOUND LEG THE NEXT MORNING BY THE CREW DESK. THE FLT ATTENDANT WITH THE FEARED SHOULDER INJURY WAS PLANNING TO SEE A DOCTOR AT THE END OF THE TRIP. SUPPLEMENTAL INFO FROM ACN 588435: DSNDING INTO RIC WITH SOME CONVECTIVE ACTIVITY IN THE AREA; WE ENCOUNTERED A MOMENTARY JOLT OF MODERATE TO SEVERE TURB; WHICH CAUSED OUR 2 AFT FLT ATTENDANTS TO BE BOUNCED TO THE GND. WE HAD VERY LITTLE WARNING OF THE TURB; AND HAD TURNED ON THE SEAT BELT SIGN AT LEAST 5 MINS PRIOR TO THE ENCOUNTER.