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There have been just under 40 earthquakes of magnitude 6.0 or larger in the past century within 150 miles of Thursday’s earthquake, which was the most powerful to rattle the state since a 7.1 ...
The threat of a tsunami has passed following a 7.0 earthquake off the northern coast of California, the National Weather Service said Thursday. The earthquake struck around 40 miles west-northwest ...
Northern California was rocked by a 7.0 magnitude earthquake late Thursday morning.. After the tremor struck at 10:45 a.m., just over 60 miles to the west-southwest of Humboldt County’s Ferndale ...
That earthquake caused close to $100 million in damage in the most recent estimate, according to Lori Dengler, an emeritus professor in geology at California State Polytechnic University, Humboldt.
The probability of a serious earthquake on various faults has been estimated in the 2008 Uniform California Earthquake Rupture Forecast. According to the United States Geological Survey, Southern California experiences nearly 10,000 earthquakes every year. [3] Details on specific faults can be found in the USGS Quaternary Fault and Fold Database.
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.
Shake map provided by the US Geological Survey of the earthquake. / Credit: USGS The earthquake was first registered as having a preliminary magnitude of 6.6, but USGS updated it to 7.0.
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. On October 25, 2022, at 11:42 PDT (October 25, at 18:42 UTC), a magnitude 5.1 earthquake occurred on the fault near Lick Observatory. [5]