As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT#2954, DCA-BOS. 'ENCOUNTERED SEVERE TURBULENCE FOR ROUGHLY 30 SECONDS. AIRSPEED INCREASE OF 40KTS FOLLOWED BY A DROP OF 60KTS. NO AIRSPEED EXCEEDANCE WAS NOTED. WAS IN CLOUD DURING WX EVENT NO RADAR RETURNS AT TIME OF EVENT; PERFORMED PHASE-1 INSPECTION IN REF WITH AMM 05-50-28. NO DEFECTS WERE NOTED. DUE TO DVDR ANALYSIS. PHASE-2 INSPECTION REQUIRED.' (SUPPLEMENTAL TO FOLLOW)