Accident Overview
A pilot reported that during the initial takeoff climb, at about 20 feet above ground level, a "heavy wind started." The airplane was pushed to the right by approximately 30 to 40 feet, and then the right wing "went straight up." The pilot took corrective action and leveled the wings. Immediately after, the airplane "quit flying," struck the ground, and nosed over, coming to rest inverted.
Sequence of Events
The takeoff began with calm winds. After becoming airborne and climbing to 20 feet, a heavy wind suddenly arose. The airplane was displaced laterally to the right. The right wing then pitched upward sharply. The pilot responded by leveling the wings, but the airplane then ceased flying, impacted the ground, and flipped onto its back.
Pilot Report
The pilot stated that before the takeoff, winds were calm. However, after starting the takeoff roll, "black clouds came in over the west mountain ridge," indicating rapidly changing weather conditions.