8/12/2023 0 Comments 1990 california earth quake![]() These maps also show what earthquake data are available from the Southern California Seismographic Network. This earthquake atlas presents maps to describe this ongoing earthquake activity and to facilitate a comparison of the activity with mapped tectonic structures such as late Quatemary faults. 1) has recorded more than 139,000 earthquakes in southern California since 1978. The Southern California Seismographic Network (SCSN) (Fig. February 1971: The Magnitude-6.Earthquake Atlas of Southern California 1978 - 1990 Egill Hauksson, Kate Hutton, Katrin Hafner, & Lucile M. A day after the magnitude-6.4 Searles Valley quake, a magnitude-7.1 earthquake generated a strong swaying motion throughout Los Angeles and the surrounding area. What we thought to be the main event turned out to be a foreshock. The quake caused damage in the immediate area, but only rattled a few nerves in the LA area. It was a magnitude-6.4 earthquake centered in the Searles Valley area about 150 miles northeast of Los Angeles. Just as Southern Californians were settling in for a day off and celebratory fireworks, the shaking set in - and kept going and going. The magnitude-7.2 quake generated moderate shaking in SoCal. Rumbling that originated from northern Baja California surged throughout Southern California and into parts of Arizona and Nevada. It's likely the quake involved a zone of faults that run parallel to, but are separate from, the infamous San Andreas Fault. The magnitude-5.8 Northern Baja quake was located about 22 miles southeast of Calexico, California. In late December 2009, the U.S.-Mexico border was again the site of a quake that rattled a large part of Southern California. The same fault likely produced a magnitude-7.0 quake in 1890 Thirteen significant aftershocks, measuring magnitude 3 or greater followed. 22, 2002, a magnitude-5.7 earthquake shook a widespread part of the U.S.-Mexico border region and as far north as Orange County. It was in such a remote location that it was named after an open quarry pit and caused little damage, aside from a surface rupture in the Twentynine Palms Marine Base.Ĭoachella unveils new advanced ticket sale for 2024 festival ![]() The magnitude-7.1 Hector Mine quake produced shaking throughout SoCal and in parts of Arizona to Nevada from its epicenter in the Mojave Desert. In October 1999, one of the largest earthquakes recorded in Southern California was centered in the desert east of LA. More than 1,900 aftershocks followed the September earthquake. At magnitude-5.8, it was likely on the same fault system as the earlier quake. 20 that same year, a second large earthquake struck the region. 17, 1995 earthquake, centered north of Ridgecrest, was followed by more than 2.500 aftershocks during the following five weeks. Thursday’s magnitude-6.4 quake was in the same area that was struck by a magnitude-5.4 quake in 1995. The destruction included collapsed buildings and freeway overpasses, snapped water and gas lines, rampant fires and landslides. More than 9,000 people were injured and 20,000 were displaced in a natural disaster that caused an estimated $20 billion in damage. 17, 1994 at 4:31 a.m., a moment seared into the memories of residents who were awakened by the terrifying shaking. The Northridge Earthquake centered in the west San Fernando Valley began rattling Los Angeles on Jan. ![]() It’s not the largest magnitude earthquake on this list, but it is by far the most devastating. The quakes listed here include those that measured 5.5 magnitude or greater in the nearly three decades since Northridge. Below, a look back at significant Southern California earthquakes since the Northridge Earthquake in January 1994.
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