What happened
The pilot was engaged in practice sessions involving takeoffs and landings in a tailwheel configured airplane. During the landing portion of the flight, the pilot reported that a wind component picked up the aircraft's wing during the flare for touchdown. The pilot described the wind conditions as an approximate 50-degree crosswind at nine knots, with gusts reaching about thirteen knots.
After leveling the wings, the airplane touched down on the runway; however, the landing roll was not parallel to the runway centerline. As the aircraft continued down the runway, it exited the runway edge. The tires of the aircraft sank into soft ground, causing the airplane to nose over.
A flight instructor witnessing the event noted that the winds were unusually variable during the period of the accident. The instructor observed the left wing strike the ground, after which the aircraft cartwheeled and came to rest with its nose and left wingtip on the ground. The pilot was not injured.