It hit at 3:28 p.m., according to the U.S. Geological Survey. Linda works with the California Earthquake Authority and she talked about 5 things to know about Earthquake Risk in California: Risk is Real in California. The earthquake occurred less than a mile from Castro Valley, Calif., less than a mile from Oakland, less than a mile from Ashland, Calif., and two miles from San Lorenzo, Calif. Sixteen earthquakes have struck the North Bay near the Geysers in the past 24 hours, with the strongest … Rotary Club of Castro Valley. The urban infrastructure in the Bay Area has been tested only by the relatively remote, 1989 magnitude 6.9 Loma Prieta earthquake, and the smaller 2014 magnitude 6.0 South Napa earthquake. In the magnitude 6 earthquake that hit … There were no immediate reports of any damage or injuries. In 1956 a magnitide-6.8 earthquake originated on the San Miguel-Vallecitos fault. Topics: Earthquake Index Volcano Index Tornado Index Other Weather Extremes Events Volcanos Nearby Historical Earthquake Events Historical Tornado Events Earthquake … Alameda County, CA has a very high earthquake risk, with a total of 234 earthquakes since 1931. CASTRO VALLEY, CA — A magnitude 2.7 earthquake was centered in the Castro Valley Monday afternoon. The risk of tornado damage in Castro Valley is about the same as California average and is much lower than the national average. The United States Geological Survey reports a preliminary magnitude 3.0 earthquake struck near Castro Valley, CA on Sunday. A 3.1-magnitude earthquake was reported near Castro Valley, according to the U.S. Geological Survey. The quake hit at 10:52 AM local time at a depth of 5 kilometers. Full Story. In 1892 a magnitide-7-7.5 earthquake occurred on the Laguna Salada Fault. ... Elf on the Shelf patrols, enforces speed with Castro Valley CHP. Meeting Highlights - March 5, 2019. This type of home is quite common throughout areas of California at high risk for significant shaking. The largest earthquake within 30 miles of Alameda County, CA was a 6.1 Magnitude in 1984. For example, in 1931 a magnitide-7.1 earthquake occurred on the Cerro Prieto Fault. A preliminary magnitude 2.7 earthquake struck near Castro Valley Monday afternoon, according to the United States Geological Survey.. ... COVID-19 holiday risk: The safest and most dangerous activities. COVID-19 holiday risk: The safest and most dangerous activities ... San Leandro, Castro Valley, Hayward, Union City, Fremont and San Jose. The population at greatest risk from a Hayward Fault earthquake is 100 times greater than in 1868. 2.6 magnitude earthquake followed by 3.4 near San Leandro. The USGS database shows that there is a 99.51% chance of a major earthquake within 50km of Alameda County, CA within the next 50 years. 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