PLT RPT; B737-700. FLYING AT FL370 OVER YUCATAN PENINSULA; MODERATE TURB TWICE; 2 MINS APART. 2 CABIN ATTENDANTS INJURED WITH FOOT AND HEAD INJURIES.

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CRUISING IN IMC OVER YUCATAN PENINSULA; MEXICO; WE EXPERIENCED MODERATE-PLUS TURB. THE RADAR WAS ON; BUT NO RADAR ECHOES WERE DISPLAYED DIRECTLY ON OUR PATH OF FLT. LIGHT PRECIPITATION (GREEN COLOR) WAS DISPLAYED TO THE L AND R AT A DISTANCE OF 25-30 MI. WE HAD 2 EPISODES OF MODERATE-PLUS TURB LASTING 20 SECONDS A PIECE; ABOUT 2 MINS APART. AND THE SECOND EPISODE; 2 FLT ATTENDANTS IN THE AFT GALLEY WERE INJURED; ONE WITH A CUT TO THE HEAD THAT LATER REQUIRED 3 STITCHES TO CLOSE AND ANOTHER WITH A FOOT AND HIP IMPACT. NO BROKEN BONES. BOTH FLT ATTENDANTS WERE ABLE TO CONTINUE ON TO THE DEST WHICH WAS PANAMA. THE SEAT BELT SIGN HAD BEEN TURNED ON AND WAS ON AT THE TIME THE TURB STRUCK. THE FLT ATTENDANTS WERE WARNED TO DISCONTINUE CABIN SVC AT THE TIME OF THE FIRST EPISODE; BUT HAD NOT COMPLETED PUTTING THEIR SVC CARTS AWAY BY THE TIME THE SECOND EPISODE OCCURRED AND THUS WERE INJURED AT THAT TIME. NO PAX INJURIES WERE RPTED; AS ALL BUT ONE CUSTOMER WAS SEATED. THE ONE PAX NOT SEATED WAS IN THE AFT LAVATORY; BUT ALSO RPTED THAT HE WAS OKAY. THE TURB DID NOT EFFECT THE CTL OF THE ACFT.