A very strong and shallow earthquake registered by the USGS as M7.1 hit Southern California at 03:19 UTC on July 6, 2019 (20:19 local time, July 5). The agency is reporting a depth of 17 km (10.5 miles). EMSC is reporting M7.1 at a depth of 10 km (6.2 miles). This…
A strong and shallow earthquake registered by the USGS as M6.4 hit Central California at 17:33 UTC (10:33 local time) on July 4, 2019. The agency is reporting a depth of 8.7 km (5.4 miles). EMSC is reporting M6.4 at a depth of 2 km (1.2 miles). At least 160…
Five minor to moderately strong earthquakes were registered at Mendocino Triple Junction, west of Eureka, California at a depth of 10 km (6.2 miles) on May 5, 2019. The strongest was M4.8 detected at 06:46 UTC on May 5. The sequence started with M3.1 at 04:17 UTC,…
Caltech seismologists have identified nearly two million previously unidentified tiny earthquakes that occurred between 2008 and 2017 in Southern California, expanding the region's earthquake catalog by a factor of 10. Their efforts, published online by the…
A strong earthquake measuring M5.3 on the Richter scale hit near the coast of Los Angeles, California at 19:29 UTC (12:29 PDT) on April 5, 2018. The USGS is reporting a depth of 16.8 km (10.4 miles). The epicenter was located 28 km (17.4 miles) SW of Santa Cruz Is….
A strong and shallow earthquake registered by the USGS as M5.8 hit off the coast of Northern California at 16:39 UTC (08:39 PST) on January 25, 2018. The agency is reporting a depth of 5 km (3.1 miles). EMSC is reporting M5.8 at a depth of 2 km (1.2 miles). The…
A sharp M4.7 earthquake hit 3 km (1.9 miles) ESE of Berkley, California at 10:39 UTC (02:39 PST) on January 4, 2017, according to the USGS. The quake hit at a depth of 13 km (8 miles) and was felt for about 5 – 10 seconds as far away as Marin and Sonoma counties as…
Following a M4.6 earthquake that hit just NE of Gonzales, California on November 13, 2017, the USGS has registered more than 130 aftershocks within the 5 km (3.1 miles) of the epicenter. Although most of those aftershocks weren't felt by the Central Coast, the…
A shallow earthquake registered by the USGS as M5.7 hit off the coast of Northern California, US at 19:50 UTC on September 22, 2017. The agency is reporting a depth of 9.1 km (5.6 miles). The epicenter was located 58 km (36 miles) W of Ferndale, 58 km WNW of…
A new study shows how seasonal changes in large-scale water cycles in California influence small-scale quake activity. It confirms that the annual hydrological loading cycle modulates microseismicity in California. The results of the study reveal how snow, rain,…
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