A shallow earthquake registered by the USGS as M5.5 hit Lake Almanor, Northern California at 23:19 UTC on May 11, 2023. The quake was followed by a series of aftershocks, including M5.2 at 10:18 UTC on May 12.
A strong and shallow earthquake registered by the USGS as M6.4 hit near the coast of Northern California at 10:34 UTC (02:34 LT) on December 20, 2022. The agency is reporting a depth of 16 km (9.9 miles). EMSC is reporting M6.3 at a depth of 40 km (24.8 miles).
A very strong earthquake registered by the USGS as M6.2 hit near the coast of Petrolia, California, U.S. at 20:10 UTC on December 20, 2021. The agency is reporting a depth of 9.3 km (5.8 miles). EMSC is reporting M6.2 at a depth of 15 km (9.3 miles). The epicenter…
A shallow M6.0 earthquake struck Little Antelope Valley, California, near the Nevada border at 22:49 UTC on July 8, 2021 (15:49 LT). This is the largest earthquake to hit California since the July 2019 Ridgecrest earthquake. The epicenter was located about 32 km (20…
An intense earthquake swarm is taking place near the Salton Sea in Southern California, U.S. on June 5, 2021, starting with M2.2 at 08:05 UTC (01:05 LT). The USGS has registered 285 earthquakes by 21:24 UTC. The swarm is still in progress and new earthquakes are…
A swarm of earthquakes rattled the Los Angeles area in California early Monday, April 5, 2021, following an M4.0 earthquake 2 km (1.2 miles) east of Lennox. The USGS received more than 7 400 'I felt it' reports. The Lennox quake was 19.9 km (12.4 miles) deep…
An intense earthquake swarm started near Salton Sea, California on September 30, 2020, with 421 earthquakes detected by 07:00 UTC on October 1. The swarm is centered just southeast of Salton Sea, near Westmorland in Imperial Valley, in an area with a history of…
A new earthquake swarm started beneath the Salton Sea in California on August 10, 2020. The risk of a larger earthquake over the next 7 days is considerably elevated due to the swarm when compared to background levels. The southernmost section of the San Andreas…
A strong and shallow earthquake registered by the USGS as M5.8 hit central California at 17:40 UTC on June 24, 2020. The agency is reporting a depth of 4.7 km (2.9 miles). 12 aftershocks were reported over the next 47 minutes, with the strongest one M4.5. The…
A new seismological study found that a naturally-occurring injection of underground fluids triggered an earthquake swarm near Cahuilla, California, that lasted for nearly four years. The research shows an evolving understanding of how fault architecture drives…
