MIA84FA206

During the pre-flt wx briefing, the non-instrument rated plt was advised of numerous thunderstorms along his proposed route of flt & that VFR flt was not recommended. While en route, he contacted miami center, requested flt following & was instructed to maintain VFR. In the vicinity of numerous lvl 3 & 4 precipitation areas, the plt inquired about the wxahead & was provided vectors to the clearest area. However, radio & radar contact were lost & the acft crashed. A witness near the crash site saw the acft falling without wings just prior to impact. He noted that there was a dark cloud behind the acft, light rain was falling & the surface wind was from the east & was gusting. The wings, cabin door & elevator counterweights were found about 1/2 mi west of the fuselage. The wings had failed upward, the vertical stabilizer had separated at the top of the tailcone & the entire tailcone had broken from the fuselage. No preexisting cracks or fatigue was found. The plt's last medical certificate was dated 4/6/81.