Learn more about the USGS Earthquake Hazards Program and ShakeAlert. Visit the and Twitter accounts for the latest updates. The USGS operates a 24/7 National Earthquake Information Center in Colorado that can be reached for more information at 30. Geological Survey and the Los Angeles Fire Department, the earthquake occurred at 2 a.m. If you felt this earthquake, report your experience on the “USGS Did You Feel It?” website for this event. A magnitude 4.2 earthquake shook Southern California early Wednesday, officials said. 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. 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. 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. Update time Tue Jul 18 23:00:00 2023 Here are the earthquakes appearing on this map, most recent at top. Click on an arrow at edge or corner of above map to go to an adjacent map. Click on an earthquake on the above map for more information. For estimates of casualties and damage, visit the USGS Prompt Assessment of Global Earthquakes for Response (PAGER) website. Recent Earthquakes in California and Nevada. Visit the USGS earthquake event page for more information. 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 epicenter was about 27 miles south of Intipucá, El Salvador.Īccording to the Associated Press, residents in El Salvador's capital ran into the streets as the ground shook, but there were no immediate reports of damage or injuries.The earthquake occurred about 20 miles southwest of Smith Valley, NV. Update time Wed Jul 19 14:00:01 2023 Here are the earthquakes appearing on this map, most recent at top. There was also a 6.5 magnitude earthquake registered in the Pacific Ocean off the coast of El Salvador that shook large parts of Central America, according to the USGS. Recent Earthquakes in California and Nevada. Nevada earthquake: 5.1 magnitude earthquake registered no damage or injuries immediately reported The earthquake hit about 30 miles east of Austin, Nevada and about 175 miles east of Carson City, Nevada. The earthquakes hit a few hours before a 5.1 magnitude quake hit Nevada around midnight local time Wednesday. No damages or injures were immediately reported. PT with the second one coming minutes later, at 9:40 p.m., according to the survey.īoth quakes struck in Bell, California, which is a city in Los Angeles County and sits less than 10 miles southeast of downtown Los Angeles. Update time Wed Jul 19 22:00:03 2023 Here are the earthquakes appearing on this map, most recent at top. A pair of 3.0 magnitude earthquakes hit Southern California Tuesday night, according to the United States Geological Surve y. List of Earthquakes for 119-34 Recent Earthquakes in California and Nevada Click on an earthquake on the above map for more information.
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