Latest Earthquakes
Advanced National Seismic System
Latest earthquakes map and list (past 24 hours, M2.5+). Tap/click on "gear icon" for options and settings.
FAQ - Frequently Asked Questions
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Significant Earthquakes, Past 30 Days
Significant Earthquakes Archive
The USGS Earthquake Hazards Program is part of the National Earthquake Hazards Reduction Program (NEHRP), established by Congress in 1977, and the USGS Advanced National Seismic System (ANSS) was established by Congress as a NEHRP facility. The USGS and its partners monitor and report earthquakes, assess earthquake impacts and hazards, and perform research into the causes and effects of earthquakes.
Highlights
Glen Avon Earthquake Swarm 5/25/2019-?
The Pasadena field office along with Caltech has been monitoring and reporting on a swarm of small earthquakes that began in the Glen Avon area, southwest of Fontana on May 25. As of June 17 the swarm produced over 1000 recorded events, including five magnitude 3.0-3.2 events and 49 earthquakes between M2 and M3. (SCSN)
How to Explain California’s Recent Earthquake Hiatus?
There have been no major ground rupturing earthquakes along California’s San Andreas, San Jacinto and Hayward faults in the past 100 years. At the 2019 SSA Annual Meeting, researchers discussed why this “hiatus” might exist, and what we might expect for California earthquakes over the next century. (SSA News Release)
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