The pilot implemented crosswind landing procedures to include a left crab angle of approximately seven degrees. While on final approach to land on Runway 17R, the winds were reported as being from 120 degrees at 15 knots. Upon reaching the runway threshold, the pilot transitioned the airplane to a left side slip and aligned with the runway. During the flare, the left main wheel touched the runway and the airplane "weather vaned" to the left. The pilot's corrective measures failed to realign the airplane with the runway heading; the airplane flipped inverted and came to rest upside down on the runway, resulting in substantial damage. A special automated weather observation report, taken near the time of the accident, reported the winds as being from 140 degrees at 13 knots, gusting to 20 knots. No mechanical anomalies were reported with the airplane.