The pilot initiated the takeoff roll in the tailwheel equipped airplane, raised the tail to a level attitude, and the airplane yawed to the right. The airplane’s nose pitched up and the airplane began to roll left, at which point the pilot attempted to regain directional control; however, the airplane departed the left side of the runway into a bean field. The pilot reduced engine power to idle and utilized the wheel brakes; however, the airplane subsequently nosed over and came to rest inverted which resulted in substantial damage to the outboard section of the right wing and the vertical stabilizer. The pilot reported that there were no mechanical malfunctions or failures of the airplane that would have precluded normal operation. Weather radar data revealed that about the time of the accident a line of thunderstorms, associated with a front, were approaching the airport from the west and were observed over the airport about 8 minutes after the accident. According to a Federal Aviation Administration inspector, the recorded winds at the time of the accident were 320 degrees at 23 knots with peak winds of 27 knots.