1906 San Francisco earthquake

On 18 April 1906, San Francisco was ravaged by an earthquake and consumed by fire. Azathoth and her rakshassi army, having been diverted here by the Seventh Doctor, were consumed in the fire. (PROSE: All-Consuming Fire) The Sonomancer attempted to destroy the Earth with this earthquake, amplifying it with the Gift. (AUDIO: The Gift) The vampire known as Weird Harold was found buried alive after the earthquake. (PROSE: Vampire Science)

While wondering why the residents of Pompeii didn't move away after the 62 earthquake, the Tenth Doctor answered his own question by saying, "then again, San Francisco". (TV: The Fires of Pompeii)

Behind the scenes

The "Earth-Skaro Timescale" of Terry Nation's Dalek Annual 1976, while claiming that any corresponding events may be purely coincidental, acknowledges that in Skaro-year 10,823 (1906), a Dalek task force landed on Earth to examine the core of the planet, causing much disturbance to the surface.