On August 14, 1994, at 1110 central daylight time, a Beech B-35 Bonanza, N5095C, was substantially damaged when it landed hard and skidded off Runway 22 at Boyceville Municipal Airport, Boyceville, Wisconsin. Neither the pilot or the sole passenger aboard were injured. The personal 14 CFR Part 91 flight originated in Strum, Wisconsin, at 1035. The flight operated in visual meteorological conditions without flight plan. In a written statement, the pilot reported everything was normal on final approach to land until approximately 15 to 20 feet above the runway surface. The pilot stated, "...we hit an extreme downdraft. I flared the plane to correct but was unable to stop the plane from being slammed into the runway on its main gear." The pilot stated, after the initial impact the airplane bounced back into the air in an extreme nose high attitude. He immediately pushed the airplane's nose down and increased the engine power. The pilot stated the airplane then impacted the grass adjacent to the runway. The nose wheel collapsed and the right wing struck the ground before the airplane came to rest. No preimpact mechanical anomalies were reported by the pilot.