Charles Hatfield's Rainmaking Methods

Charles Hatfield was a late 19th and early 20th century Pluvaculturalist or rainmaker. He claimed to be able to cause precipitation by sending chemical vapors into the air. No statistical investigation has been conducted to demonstrate the efficacy of his work relative to baseline precipitation data. Michael parent concludes that Hatfield's 1904 rainmaking efforts were ineffective, but that the 1916 San Diego flood looks like something he really did influence.