Earlier in the day two other quakes had been felt. The first, at 8:38 a.m., was 3 on the Richter scale, and the second, at 10:48 a.m., registered 3.75. No lives were lost, there were no serious injuries, and structural damage to homes was slight, although a large number of homes in the Westlake--Palisades--Daly City area suffered more or less superficial damage, generally confined to exterior plaster.
The quake was centered on the San Andreas fault near Daly City. Damage to buildings in San Francisco was noted throughout the city, but was most extensive in the western portions. This earthquake, along with the 1906 and 1989 jolts, continues to be studied by scientists. Subsequent investigation indicates that the 1957 earthquake may have been centered near the epicenter of the Great Earthquake of 1906.
From Gladys Hansen's San Francisco
©1995 Chronicle Books
The Great Earthquake of 1865
The San Francisco Earthquake of 1868
The Great Earthquake and Fire of 1906
The 1989 Earthquake and Fires
Chronology of San Francisco Earthquakes 1769 - 1994