when did san francisco last have an earthquake
1989 Loma Prieta earthquake The 1989 Loma Prieta earthquake occurred in Northern California on October 17 at 5:04 p.m. local time. The shock was centered in The Forest of Nisene Marks State Park approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and was named for the nearby Loma Prieta Peak in the Santa Cruz Mountains. With a moment magnitude of 6.9 and a maximum Mercalli intensity of IX (Violent), the shock was responsible for 63 deaths and 3,757 injuries. The Loma Prieta segment of the San Andreas Fault System had been relatively inactive since the 1906 San Francisco earthquake (to the degree that it was designated a seismic gap) until two moderate foreshocks occurred in June 1988 and again in August 1989.
Mission San Gabriel Arcángel Mission San Gabriel was founded on September 8, 1771 by Fray Angel Francisico de Sonera and Fray Pedro Benito Cambon. The planned site for the Mission was along the banks of the Río de los Temblores (the River of the Earthquakes—the Santa Ana River). The priests chose an alternate site on a fertile plain located directly alongside the Rio Hondo in the Whittier Narrows.[12] The site of the Misión Vieja (or "Old Mission") is located near the intersection of San Gabriel Boulevard and Lincoln Avenue. In 1776, a flash flood destroyed much of the crops and ruined the Mission complex, which was subsequently relocated five miles closer to the mountains in present-day San Gabriel (the native settlement of 'Iisanchanga). The Mission is the base from which the pueblo that became the city of Los Angeles was sent. On December 9, 1812 (the "Feast Day of the Immaculate Conception of the Blessed Virgin"), a series of massive earthquakes shook Southern California. The 1812 Wrightwood earthquake caused the three-bell campanario, located adjacent to the chapel's east façade, to collapse. A larger, six-bell structure was subsequently constructed at the far end of the capilla. While no pictorial record exists to document what the original structure looked like, architectural historian Rexford Newcomb deduced the design and published a depiction in his 1916 work The Franciscan Mission Architecture of Alta (upper) California.