This website provides resources for ShakeAlert System partners, including Technical Partners, Emergency Managers, and Communication, Education & Outreach partners. To get ShakeAlert-powered alerts on your phone, please visit: /faqs/how-do-i-sign-shakealertr-earthquake-early-warning-system Who is this website for? ![]() These automated actions could include slowing trains, closing water valves, turning on backup generators, issuing public announcements, and many others.įor general information about ShakeAlert, please visit: /ShakeAlert The USGS works with licensed technical partners who use USGS-issued ShakeAlert Messages to alert people to take a protective action or to trigger automated actions. The purpose of the system is to reduce the impact of earthquakes to save lives and property. Geological Survey, detects significant earthquakes quickly enough so that alerts can be delivered to people and automated systems potentially seconds before shaking arrives. KTVU's Jana Katsuyama and Associated Press contributed to this report.The ShakeAlert ® Earthquake Early Warning System, managed by the U.S. Jennings (1992, California Division of Mines and Geology Open-File Report 92-03). It's an important reminder to have an earthquake preparedness plan ready. For California the faults on the individual zoomed-in and special maps come from the three categories of faults believed to have been active in the last 700,000 years shown on the Preliminary Fault Activity Map of California by C.W. 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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