The weather was semi-stormy

A report in L'Astronomie, 1886-310, tells of a resident of Pondicherry, Madras, India, who, on June 13, 1885, was sitting in a closed room when a mist appeared near him. At the same time there was a violent explosion. The reporter explained it as “at the time the weather was semi-stormy, and…an hour later rain fell heavily.”

–Charles Fort, Wild Talents, p. 945-946 (The Complete Books of Charles Fort, Dover, c1974).