The first preliminary waves of the California earthquake of June 6, 1932

On the morning of June 6, 1932, at 44 minutes past midnight the region about Humboldt Bay was severely shaken by an earthquake which attained a maximum intensity of VIII on the Rossi‐Forel scale. One death and a number of injuries were caused by the shock. It was felt as far north as Coos Bay, as far south as San José, and as far east as Sierra County. Records from the following stations were collected for a study of the earthquake: Ukiah, Berkeley, Tinemaha, Santa Barbara, Pasadena, Riverside, La Jolla, Bozeman, and Tucson.