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Geological structures near Santa Rosa, showing the epicenters of the 1969 earthquakes. At 04:56 and 06:19 UTC on October 2, 1969 (21:56 and 23:19 PDT October 1), a pair of earthquakes of magnitude 5.6 and 5.7, respectively, struck the city of Santa Rosa, California, killing one person and damaging buildings.
The maximum credible earthquake expected to be generated from the Healdsburg Fault is estimated to be about 7.5 on the Richter scale. [1] The last major event in Sonoma County were the 1969 Santa Rosa earthquakes, a magnitude 5.6 and 5.7 doublet that occurred on this fault. The county anticipates similar events every 20–30 years.
The earliest known earthquake in the U.S. state of California was documented in 1769 by the Spanish explorers and Catholic missionaries of the Portolá expedition as they traveled northward from San Diego along the Santa Ana River near the present site of Los Angeles. Ship captains and other explorers also documented earthquakes.
In the past 10 days, there have been two earthquakes of magnitude 3.0 or greater centered nearby. Skip to main content. News. 24/7 Help. For premium support please call: 800-290 ...
In Northern California, the magnitude 6.9 Loma Prieta earthquake of 1989 was centered in the Santa Cruz Mountains, yet still caused collapses in San Francisco and Oakland, about 60 miles from the ...
1969 Santa Rosa earthquakes; 1971 San Fernando earthquake; 1973 Point Mugu earthquake; 1975 Oroville earthquake; ... 2010 Baja California earthquake;
The United States Geological Survey says there have been at least 40 other earthquakes of a magnitude 6.0 or larger in the region during the last 100 years. 7.0 California Shake Intensity
The Santa Rosa Fire Department, like many departments across the United States, made its start as a volunteer organization on February 12, 1861. [81] Decades later in 1894 the department made its transition to a paid organization. In 1906 a massive 7.8 magnitude earthquake destroyed most of Santa Rosa. [82]