A B737-300 FO RPTED THAT TURB; IN THE VICINITY OF SAN DIEGO; CAUSED INJURY TO 2 FLT ATTENDANTS WHO WERE REMOVED FROM THE SEQUENCE.

Narrative

WE FLEW TO SAN DIEGO AT FL280 AND THE CRUISE PORTION WAS SMOOTH AND UNEVENTFUL. WHEN VACATING FL280; THE CAPT TURNED ON THE SEATBELT SIGN. UPON CONTACT WITH SOCAL APCH (APPROX FL180-FL190) WE WERE ADVISED AN EARLIER ACFT HAD ENCOUNTERED MODERATE TURB BTWN 8000-10000 FT. THE CAPT MADE A PA ANNOUNCEMENT ADVISING OF A POSSIBLE BUMPY RIDE; AND HE ASKED THE FLT ATTENDANTS TO 'SECURE THE CABIN FOR ARR.' WE CONTINUED A DSCNT (250 KIAS AND 1500 FPM) AND LEVELED AT 10000 FT MSL. AFTER BEING LEVEL FOR A SHORT PERIOD (ESTIMATE 2-3 MINS); THE ACFT ROLLED TO 10-15 DEGS OF BANK TO THE R AND THEN REVERSED TO A L BANK OF 10-15 DEGS. BY THEN THE CAPT HAD DISENGAGED THE AUTOPLT AND LEVELED THE ACFT. SHORTLY THEREAFTER; THE ACFT ENTERED MORE ROUGH AIR AND REPEATED THE SAME MANEUVER. WE REQUESTED AN IMMEDIATE DSCNT AND THE RIDE SMOOTHED WHEN PASSING ABOUT 8000 FT. THE CAPT QUERIED THE 'A' FLT ATTENDANT AS TO THE STATUS IN THE CABIN AND WAS TOLD EVERYONE WAS OK. HOWEVER; AFTER LNDG WE WERE INFORMED 2 FLT ATTENDANTS WERE STILL UP WHEN THE ROUGH AIR HAPPENED. ALTHOUGH THEY DIDN'T APPEAR INJURED; THEY WERE VISIBLY SHAKEN AND WERE REMOVED FROM THE REST OF THE SEQUENCE. NO OTHER PROBS WERE NOTED.