According to the pilot's written statement, he had made two uneventful night full-stop landings, noting "swirling winds" on final approach that were "strange" but had "no considerable impact." As he flared for the third landing, the airplane "went nose down in a quick motion." He heard the nose gear strut collapse so he added power and made a go-around. He then landed uneventfully. Post-accident examination revealed the firewall and related structural components had been bent. There were also 1/6-inch nicks on 2 of the 3 propeller blade tips.
According to the airport's AWOS (Automated Weather Observing System), the wind was calm at the time of the accident.