Some years ago, while investigating asteroid diversion, I ran across a reference to a meteorite that struck just west of the city limits of Pittsburgh on June 24, 1938. The source claimed that it was estimated to be a 500 ton object and that the explosion cracked windows in the department stores downtown. I have searched the web and found a couple of similar references.

Does anyone have further information or corroboration about this event? Does anyone know where the impact site was? Is this something that people from Pittsburgh all know about?

The articles I have found claim that if the trajectory of the object had been more vertical, it would have hit Pittsburgh and wiped out a large amount of the population.