Fault rupture crosses dirt road, with California Geologial Survey vehicles for scale. California State Route 178 SW of Trona, following the M7.1 earthquake. See the aftershock forecast for details. (Credit: USGS. The dirt track (center) is right-laterally offset approximately 2.5 m (~8 ft). USGS Earthquake Science Center Mobile Laser Scanning truck operated by Ben Brooks and Todd Ericksen scanning the surface rupture near the zone of maximum surface displacement of the M7.1 Searles Valley earthquake. The USGS operates a 24/7 National Earthquake Information Center in Colorado that can be reached for more information at 303-273-8500. The northeast-striking Garlock fault (orange) runs south of Ridgecrest through the center of the map. The blue dots are the events associated with the magnitude 6.4 and the red dots are associated with the magnitude 7.1 (USGS animation; background image copyright Google Earth Used with Permission). They included three initial main shocks of Mw magnitudes 6.4, 5.4, and 7.1, and many perceptible aftershocks, mainly within the area of the Naval Air Weapons Station China Lake. US Navy Captain Paul Dale discusses the collaborative efforts between the USGS and Naval Air Weapons Station, China Lake after the Ridgecrest earthquake sequence. These locally installed instruments provide more precise measurements of small aftershocks, ground shaking, and ground deformation than more remote regional instruments can. White circles are approximate S-shaking times at 15 second intervals away from the ANSS epicenter. Displacement at this location is primarily normal (vertical). “Events like these are an important opportunity to document what happens and could potentially happen in the future.”. The USGS has a revised the alert for economic losses to yellow, meaning that damage is possible, and the impact should be relatively localized. Mainshock and aftershock locations shortly after the magnitude 7.1 event, exhibiting a distinctive “T” pattern created by two perpendicular fault zones. A man inspects a crack in the earth after a 6.4-magnitude earthquake struck near Ridgecrest on July 4, 2019. Remember the July earthquakes? 2019-07-04 17:43:29 UTC at 17:43 July 04, 2019 UTC Location: Epicenter at 35.658, -117.554 11.2 km from Ridgecrest (7.2 miles) Southern California Jump to Navigation Significant Earthquakes - 2020. This research will help scientists understand the earthquakes, which faults broke during the earthquake, and the extent of faulting and surface displacement. Smaller earthquakes are likely during the next week, with 220 to 330 magnitude 3 or larger aftershocks. Ruptures from the July 5 magnitude 7.1 event appear in red. The ShakeAlert system initially estimated the location at 1.6 miles from the ANSS final location, and this measurement did not change significantly. (Credit: USGS. On July 12 at 6:11 a.m. Pacific Time a moderate magnitude 4.9 aftershock occurred near Ridgecrest. There have been thousands of aftershocks of the magnitude 6.4 earthquake on July 4 and the 7.1 quake that occurred the next day. California Geological Survey and USGS geologists and geophysicists with National Guard and Navy personnel view road damage from 3 to 5 feet of right-lateral motion near the expected maximum slip locality along the primary tectonic rupture associated with the M 7.1 event. (Credit: USGS. July 5, 2019 A road is damaged from an earthquake Thursday, July 4, 2019, in Trona, Calif. A strong earthquake rattled a large swath of Southern … Scientists from the USGS and other organizations continue field work and analyses to learn more about the series of earthquakes and aftershocks centered in the Southern California desert near Ridgecrest. Four stations initially detected the earthquake, with 226 stations contributing to the final alert 40 seconds after detection. by LAist Staff in News on July 6, 2019 3:50 PM Tweet An employee works at the cash register at Ridgecrest Market which remained open since a 7.1 earthquake struck the community. — Gabrielle Union (@itsgabrielleu) July 4, 2019 Ruptures from the magnitude 6.4 event trend northeast to southwest, and ruptures from the magnitude 7.1 event trend northwest to southeast. List of 10 largest earthquakes in the world during July 2019: #1: M 7.1 quake: 18km W of Searles Valley, CA (USA) on Sat, 6 Jul 03h19 #2: M 7.1 quake: Halmahera, Indonesia on Sun, 14 Jul 09h10 #3: M 6.8 quake: Northern Molucca Sea (Indonesia) on Sun, 7 Jul 15h08 #4: M 6.6 quake: Offshore Broome, WA (Australia) on Sun, 14 Jul 05h39 There were 110,000 aftershocks It started on July 4, when a 6.4-magnitude foreshock struck Southern California, the study said. Over the past 40 years, prior to the July 4th event, 8 other M5+ earthquakes have occurred within 50 km of the July 6th, 2019 earthquake. July 16, 2019 / 7:51 PM / CBS News A 4.3-magnitude earthquake and a 3.5 aftershock rocked northern California on Tuesday, less than two weeks after large earthquakes … Public domain. (MORE: New app warns LA residents seconds before a massive earthquake strikes) Public domain. Circles indicate where scientists have visited the fault surface rupture. USGS estimates that economic losses will exceed $10 million dollars, with a 30 % chance that losses exceed $100 million dollars. A resident inspects a crack in the earth after a 6.4 magnitude earthquake struck on July 4 near Ridgecrest, California. Maximum shaking was estimated at MMI IX (violent) near the epicenter and shaking was very strong (MMI VII) over a broader, approximately 25-mile wide region, including the city of Ridgecrest (see map below). Center line has been offset up and to the right as one looks across the fault towards the east. Learn more about the USGS Earthquake Hazards Program. USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. ShakeAlertLA is the nation’s first test of delivering USGS-generated ShakeAlerts to a large population using a city-developed cell phone app. Magnitude 4.5 earthquake at 1:15pm PDT strikes at Ridgecrest, California on July 16, 2019. The USGS earthquake forecasts help to understand the chances of having more earthquakes within a given time period in the affected area. So far, all of the magnitude 4 and above aftershocks are occurring within the original aftershock zone. During the week starting July 11, the USGS forecasts a 1 in 200 chance of a magnitude 7 or larger aftershock and a 43% chance of a potentially damaging magnitude 5 or larger aftershock. Rubbles lie outside a damaged house in Itbayat town, Batanes islands, northern Philippines after a strong earthquake struck on Saturday July 27, 2019. more than 540 magnitude 3 or larger events. A 6.4 earthquake struck in Southern California about 150 miles from Los Angeles on July 4, 2019. No one can predict the exact time or place of any earthquake, including aftershocks. This road is now closed for repairs. The earthquakes were large enough that the fault rupture reached the earth’s surface. That gave way 36 … Latest earthquakes worldwide past 24 hours, Sunday, 17 Jan 2021 Updated 17 Jan 2021 07:48 GMT - Refresh During the past 24 hours, there were 4 quakes of magnitude 5.0 or above, 35 quakes between 4.0 and 5.0, 118 quakes between 3.0 and 4.0, and 212 quakes between 2.0 and 3.0. (Credit: Ben Brooks, USGS. Magnitude 3 and above earthquakes are large enough to feel near the epicenter. Residents sleep on the ground after leaving their homes to find higher grounds following an earthquake in Gane Utara, North Maluku, Indonesia, Sunday, July 14, 2019. The field mapping and seismological work will continue from weeks to months as scientists analyze the collected data. (Credit: USGS. July 5, 2019 | 11:46pm | Updated July 6, 2019 | 2:14am Enlarge Image Smoke rises from a fire that broke out behind the Casa Corona restaurant following an earthquake in Ridgecrest, Calif. AP ), Relation to Coso Geothermal Field and Other Major Faults, Map showing the Coso Geothermal Field to the north. … A magnitude 7.1 earthquake struck Southern California on July 5, 2019, following on the heels of the massive Fourth of July quake. The assessment includes canvassing the impacted area for fault displacements, including offsets in roads or curbs, distortion of pipelines, and damage to structures. As of July 18, there is a 1 in 300 chance of a magnitude 7 or greater aftershock, a 3% chance of a magnitude 6 or greater aftershock and a 29% chance of a magnitude 5 aftershock in the next week. Their observations show that the magnitude 7.1 event caused a maximum of 6 to10 feet of right-lateral offset along about 30 miles of rupture. Smaller earthquakes are likely during the next week, with 55 to 120 magnitude 3 or greater aftershocks. This event was centered near the July 4, 2019 magnitude 6.4 earthquake. A magnitude 7.1 earthquake struck southern California on July 5, 2019 at 8:20 p.m. local time (July 6 at 03:20 UTC). Earthquakes on Friday, July 19, 2019 On Friday, July 19, 2019, there were 981 earthquakes The most powerful quake was a magnitude of 5,5 at 7/19/2019 9:22:15 AM UTC Earthquake … The 2 strong earthquakes of July 14, 2019 - the first a 6.6-magnitude off the western coast of Australia and the second a 7.3-magnitude in Indonesia - happened on or near the Pacific Ring of Fire. This includes conducting aerial and ground reconnaissance of the extensive surface rupture, deploying temporary seismic and geodetic stations to record aftershocks, and coordinating efforts with military, state, local and academic partners. Map showing the initial alert location (red “+” on green symbol), the four stations that reported the initial alert (green circles), and the USGS network location (yellow circle). This is a list of earthquakes in 2019.Only earthquakes of magnitude 6 or above are included, … The 7.1-magnitude earthquake took place at 03:19 UTC on July 6, 2019 (8:19 p.m. Pacific Daylight Time on July 5; translate UTC to your time ). The alert remains at green for shaking-related fatalities. The 2019 Ridgecrest earthquakes (more commonly referred to in scientific literature as the 2019 Ridgecrest earthquake sequence) of July 4 and 5 occurred north and northeast of the town of Ridgecrest, California and west of Searles Valley (approximately 200 km [122 mi] north-northeast of Los Angeles). This event was centered near the July 4, 2019 magnitude 6.4 earthquake. ShakeAlertLA is currently configured to send alerts for earthquakes of magnitude 5.0 or greater if potential damage from shaking is expected (MMI IV+) in Los Angeles County. The California Integrated Seismic Network, a network of about 400 high-quality ground motion sensors, enabled the USGS to produce a map of regional ground shaking shortly after the magnitude 7.1 event. During the last three days, scientists with the USGS and California Geological Survey -- with help from the U.S. Navy -- began to survey and map the surface ruptures and offset features that resulted from the earthquake. A newer version called the Global ShakeMap also incorporates public observations reported into Did You Feel It? The USGS has issued a red alert for economic losses meaning that extensive damage is probable, and the disaster is likely widespread. I remember the Nisqually Earthquake of February 28, 2001, and if you lived in the Pacific Northwest at the time, I’m sure you do too. The USGS is closely monitoring this situation using instruments installed where these fault systems meet. USGS Research Geologists Christopher DuRoss and Jessica Thompson Jobe examine rupture resulting from the M7.1 Searles Valley earthquake. In this location the fault has a main strand where much of the slip occurred, as well as distributed fractures. Between 39 to 73 such events are expected in the next week. USGS Earthquake Science Center Mobile Laser Scanning truck operated by Ben Brooks and Todd Ericksen scanning the surface rupture near the zone of maximum surface displacement of the M7.1 Searles Valley earthquake. The USGS is investigating why ShakeAlert underestimated the final magnitude by 0.8 units. Past events with this alert level have required a local or regional level response. Past events with this alert level have required a national or international level response. Rarely is the surface rupture for large earthquakes expressed as a single, clear break, and in this case the rupture along part of its length is unusually broadly distributed. Large aftershocks are still possible. The number of aftershocks will drop off over time, but a large aftershock can increase the numbers again, temporarily. The magnitude 6.4 and 7.1 earthquakes and their aftershocks. As of July 12, more than 8,900 aftershocks have been recorded including: This video shows earthquakes from a few hours before the July 4 magnitude 6.4 event through noon on July 8, 2019. The closest large population center is Ridgecrest, population 28,000. Interestingly, stopping southeast of the Coso geothermal field. A magnitude 7.1 earthquake struck southern California on July 5, 2019 at 8:20 p.m. local time (July 6 at 03:20 UTC). The Coso field itself is having very little aftershock activity. Another earthquake – on the heels of a 6.4 magnitude quake that struck Southern California – has hit the Ridgecrest, CA area on July 5, 2019. The USGS has received more than 40,000 “Did You Feel It?” reports. A magnitude 3.6 earthquake was reported Friday afternoon at 12:25 p.m. Pacific time, nine miles from Coachella, Calif., according to the U.S. Geological Survey. 2019-07-06 03:28:46 UTC at 03:28 July 06, 2019 UTC Location: Epicenter at 35.902, -117.723 30.2 km from China Lake Acres (18.2 miles) Central California Seismic stations are indicated by triangles and GPS stations are shown as squares. (Credit: USGS. Fault scarp close to the epicenter. Within 14 seconds, the system increased its estimated magnitude to 6.3. Beth McCoy, who lives in Glendora, California, isn't too anxious. If you felt this earthquake, report your experience on the “USGS Did You Feel It?” website for this event. Additional monitoring equipment will continue to be deployed to learn about this large earthquake. Public domain.). California State Route 178 southwest of Trona, following the magnitude 7.1 earthquake. Oblique photograph showing surface faulting from the M7.1 Searles Valley earthquake. Public domain.). 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