Calaveras Fault 6.5 that occurred in 1911 in the Morgan Hill area. The most recent of these was a magnitude 6.2 earthquake near Morgan Hill in 1984. A magnitude 5.6 earthquake occurred on the Calaveras Fault on October 30, 2007 at 20:04 PDT (October 31, at 03:04 UTC), near Alum Rock. Prior to the 2014 South Napa earthquake, it was the most powerful quake to hit the Bay Area since the Loma Prieta earthquake of 1989, and the largest on the Calaveras Fault since 1984. Although it has been known for some time that the Calaveras and Hayward faults merge in the
San Francisco Opera which followed. One of Mansouri's triumphs was the overseeing of the reconstruction and renovation of the opera house following the October 1989 earthquake. After closing at the end of the 1995 Fall season for "a 21-month, US$88.5 million renovation, San Francisco's War Memorial Opera House reopened on 5 September 1997 with a gala concert celebrating this occasion, as well the 75th anniversary of the San Francisco Opera. Fittingly, the concert featured operatic greats of the past, present and future. The project included repairs of damage caused by the 1989 Loma Prieta earthquake, improvements for the audience and performers, seismic strengthening