San Juanico disaster: A series of explosions at the Pemex petroleum storage facility at San Juan Ixhuatepec in Mexico City starts a major fire and kills about 500 people.

The San Juanico disaster was an industrial disaster caused by a massive series of explosions at a liquid petroleum gas (LPG) tank farm in San Juanico, Tlalnepantla de Baz, Mexico (outside of Mexico City, Mexico) on 19 November 1984. The explosions consumed 11,000 m3 of LPG, representing one third of Mexico City's entire liquid petroleum gas supply. The explosions destroyed the facility and devastated the local town of San Juan Ixhuatepec, with 500–600 people killed, and 5000–7000 others suffering severe burns. The San Juanico disaster was one of the deadliest industrial disasters in world history.