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 M6.4 event ruptured along the NE-SW trending fault, and the subsequent M7. The purpose of the system is to reduce the impact of earthquakes and save lives and property. Mainshock and aftershock locations shortly after M7.1 event, exhibiting a distinctive T pattern created by two perpendicular fault zones. Geological Survey, detects significant earthquakes quickly enough so that alerts can be delivered to people and automated systems potentially seconds before shaking arrives. Learn more about the USGS Earthquake Hazards Program and ShakeAlert.The ShakeAlert® Earthquake Early Warning System, managed by the U.S. Visit the and Twitter accounts for the latest updates. Each year seismic networks record more than 30,000 earthquakes with magnitudes (M) as small as 1.0 in California and Nevada. The earthquake occurred about 20 miles southwest of Smith Valley, NV. A magnitude 6.0 (M6.0) earthquake struck Little Antelope Valley, California near the Nevada border on Jat 3:49pm local time (July 8 at 22:49 UTC). The USGS operates a 24/7 National Earthquake Information Center in Colorado that can be reached for more information at 30. The USGS has up-to-date details on the Jevent. If you felt this earthquake, report your experience on the “USGS Did You Feel It?” website for this event. The Wireless Emergency Alert system did not distribute alerts for the earthquake because the underestimation of the quake meant it did not reach the system's threshold of alerting for earthquakes that are M5.0 or stronger. ![]() App providers, including MyShake, and QuakeAlertUSA, as well as Google Android have an alerting threshold of M4.5. The apps also sent alerts for a M4.6 aftershock at 23:33 UTC (4:33 pm local time) that was correctly located. Maps are updated within 1-5 minutes of an earthquake or once an hour. USGS All Earthquakes, Past Day 199 earthquakes. Magnitude for new earthquakes until a magnitude is determined (takes 4-5 minutes). The Latest Earthquakes application supports most recent browsers. Brown lines are known hazardous faults and fault zones. ShakeAlert Messages were distributed via app partners for the inaccurately located M4.8 (near Stockton) that occurred as shaking from the M6.0 travelled across the state. Search Earthquakes Near You ( Relative2Me ). As the USGS builds more stations, it expects to see most of these issues resolved. The system is constantly growing and learning from events like these. This can cause issues like inaccurately locating and miscalculating the quake. ![]() The system initially thought it was detecting three different smaller earthquakes rather than one larger one. With relatively few seismic stations in this part of California, earthquake waves have to travel further to be detected. The ShakeAlert Earthquake Early Warning System detected the earthquake 25.6 seconds after it started, but under-estimated the magnitude as a M4.8 at an estimated location that was about 31 miles (50 km) south of the actual location. For estimates of casualties and damage, visit the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) website. USGS Significant Earthquakes, Past Month 10 earthquakes. Visit the USGS earthquake event page for more information. The Latest Earthquakes application supports most recent browsers, view supported browsers. The USGS is coordinating its response with the California Geological Survey and the University of Nevada at Reno. USGS scientists expect that this event will trigger aftershocks, but these will decrease in frequency over time. The event was widely felt, with over 25,000 "Did You Feel It?" reports thus far submitted. The quake is a result of normal faulting at approximately 6.2 miles (10 km) depth near the Antelope Valley fault, which runs north-south along the Sierra Nevada range front. Perceived shaking for the quake was very strong. The earthquake occurred about 20 miles southwest of Smith Valley, NV.
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