He believed the large amounts of air trapped underground would make weather on Earth’s surface before a quake hot and calm. that earthquakes were caused by trapped winds escaping from subterranean caves. The myth stems from the Greek philosopher Aristotle, who proposed in the 4 th century B.C. A common one is that there’s such a thing as “earthquake weather” - certain types of weather conditions that typically precede earthquakes, such as hot and dry, or dry and cloudy. There are lots of myths about earthquakes. They also got people talking about all aspects of earthquakes. While the remote location undoubtedly minimized impacts, the quakes did serve as a wake-up call for complacent Californians that they live in Earthquake Country and need to prepare for the inevitable “Big One” that scientists say is sure to come. KTVU's Jana Katsuyama and Associated Press contributed to this report.The twin magnitude 6.4 and 7.1 earthquakes that struck the Ridgecrest area in California’s Mojave Desert northeast of Los Angeles on July 4 and 5, respectively, were felt by up to 30 million people in California, Nevada, Arizona and Baja California, resulting in loss of life, injuries, billions in damage and lots of frazzled nerves. It's an important reminder to have an earthquake preparedness plan ready. Allen said aftershocks could continue over the next few days or weeks and could even be larger than the 6.0 felt near Antelope Valley. Officials said the system was working and that alerts did go out. "It's rare, but from time to time earthquakes may be detected automatically that are not real earthquakes when you actually have a human go in and take a look at the data," Minson said.Ĭalifornia's MyShake app alert, an early earthquake warning system for mobile devices, was launched in 2019. The information is then immediately reviewed by someone to determine whether the automated algorithm is correct or if adjustments need to be made. Sarah Minson with USGS explained to KTVU that it uses an automated system to detect earthquakes. Initially, the USGS reported that a magnitude 4.8 earthquake stuck Farmington, California two minutes after the 6.0 shaker, but the agency pulled the reading after further review. Sarah Minson with the United States Geological Survey spoke with KTVU by phone to break down a series of quakes that struck between Nevada and California. Magnitude 5.9 earthquake, series of aftershocks strike along Nevada-California border And so this is part of a long term tectonic process that happens over millions and millions of years. "That motion is actually moving further and further east into this eastern California shear zone. Richard Allen, director of the UC Berkeley Seismological Laboratory.Īllen said this is an area being moved by shifting plates to the west along the more famous Hayward and San Andreas faults. "This is just one of the more unusual locations where we see earthquakes from time to time," said Prof. The earthquake swarm happened on the Antelope Valley fault. "We have a team of folks who are actively working to do those assessments, check on the roads, check on the infrastructure, any sites of note whether it be sewage treatment, a jail, hospital that could be impacted," said Ferguson. The state's Office of Emergency Services says there were no immediate reports of large damage. We saw some of the light fixtures swaying," said Brian Ferguson, Deputy Director of Crisis Communications at CAL-OES. "We actually felt the earthquake here in our office in Sacramento. Officials with the California Office of Emergency Services said they felt the quake in their Sacramento area offices when it happened. Cluster of quakes causes rockslides near Sierra NevadaĬaltrans said rockslides occurred on Highway 395 and State Route 89 in Mono County, near Sierra Nevada.
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