The 2014 South Napa earthquake provides an opportunity to reconsider the Mare Island earthquake of 31 March 1898, which caused severe damage to buildings at a Navy yard on the island. Effects of the earthquake were widely observed across the Napa Valley region from Vallejo and Mare Island in the South to the North end of Napa Valley. But the South Napa earthquake could have been worse. The epicenter was located approximately 9 km south of the city of Napa in northern California. [34], The event was credited with large, temporary increases in the water flow of several nearby streams, including Carriger Creek, Calabasas Creek, Felder Creek, Sonoma Creek, Tulocay Creek, Green Valley Creek, and Wild Horse Creek. ABC News station KGO … This report is an overview of Full Story. Contribute to citizen science. On Sunday, August 24, 2014 at 3:20 a.m. (local time) a magnitude 6.0 earthquake struck near Napa, California. South Napa M 6.0 Earthquake Rev. Number and percentage of households reporting injuries after the South Napa earthquake, by injury characteristics — Napa Other aspects of the event included an experimental earthquake warning system that alerted seismologists several seconds before the damaging shear waves arrived, temporary changes in springs and wells, and the potential for postseismic fault creep. The system would cost $80 million in funding to run for five years in California, or $120 million for the whole West Coast. The rupture has an average rupture velocity of 3.0 km/s and a peak slip of 2.24 m. Figures 3 a– 3 c show the spatial distributions of slip, rise time, and average slip rate, respectively. The incident period was from August 24, 2014 to September 7, 2014. 64, No. about viewing, downloading, and printing report files can be found here. Potential-field data indicate that the M6.0 South Napa earthquake and its aftershocks were influenced by complex structure among the West Napa-Carneros-Pinole-Franklin faults system. [32] An $11.6 million contract for restoration of the courthouse was awarded by Napa County in August 2017. [22], On September 16, 2014 in a report to the Napa City Council, members were briefed on the status of damage sustained. 2014 South Napa Earthquake to refine and improve the survey. [13], Several older commercial buildings in downtown Napa showed signs of extensive external damage even though many had been retrofitted for earthquake safety protection. [2] According to an early estimate by the USGS, the economic costs to Napa County may go as high as $1 billion. South Napa Earthquake Links: USGS event page. The preferred fault model for the 2014 South Napa earthquake has a cumulative seismic moment of 1.28 × 10 18 Nm during its 8 s of coseismic rupture. [42] These systems commanded the bay doors to open at these fire stations between 1.7 and 2.4 seconds before the S-waves arrived at each fire station. The South Napa earthquake’s epicentre was approximately 9 kilometres southwest of Napa, Calif., a town of about 77,000 people. The system being developed at the Berkeley Seismological Laboratory (called ShakeAlert) in conjunction with the United States Geological Survey, the California Institute of Technology and the University of Washington, will eventually cover the entire West Coast. [43] In December 2014, United States Congress approved a $5 million allocation as part of the Consolidated Appropriations Act, 2014 in order to expand funding for development of the system. LockA locked padlock Geotripper: Magnitude 6.0 Quake in Northern California - … [16] Six major fires broke out,[9] and four homes in Napa Valley Mobile Home Park located in north Napa were destroyed. These strainmeters are located between 24 and 80 km from the source, and the observed offsets ranged up to 400 parts per billion (ppb), which exceeds their nominal precision by a factor of 100. We analyze centimeter-scale accuracy mobile laser scanning (MLS) data of deformed vine rows within ±300 m of the principal surface expression of the M (magnitude) 6.0 2014 South Napa earthquake. 1: 11 Oct 2014 24 August 2014 M w 6.0 S. Napa Earthquake SPA Reconnaissance Report . [35][36], In the following months, geologists studying the effects of the event warned that a potential afterslip could cause the previously unmapped portion of the fault in the Browns Valley area of Napa to slowly move up to another 6 inches (150 mm) in the next 3 years.[37][38]. Also, Brief Report for West Napa fault, Browns Valley section. Many streams and springs, which were dry or nearly dry before the 2014 Mw6.0 South Napa earthquake, started to flow after the earthquake. Download the latest version of Adobe Reader, free of charge. Geological Survey345 Middlefield Road, MS 977Menlo Park, CA 94025. If the entire fault had ripped, the earthquake would have been more powerful. All earthquake… [21] Estimates of the damage to the wine industry were downgraded to between $80 and $100 million in a September 5, 2014 report from Silicon Valley Bank to the Napa County Board of Supervisors. Attfield KR, Dobson CB, Henn JB, Acosta M, Smorodinsky S, Wilken JA, Barreau T, Schreiber M, Windham GC, Materna BL, Roisman R. On August 24, 2014, at 3:20 a.m., a magnitude 6.0 earthquake struck California, with its epicenter in Napa County (1). 1 . Governor Brown declared a state of emergency on August 24 2, … It was also reported that the estimate for damage to the City's infrastructure had reached $57.9 million. On Sunday, August 24, 2014 at approximately 3:20 AM local time, a 6.0 magnitude earthquake was felt across South Napa Valley and the San Francisco Bay area. The South Napa Earthquake caused extensive damage through both ground shaking and surface cracking (rupture). M6.0 South Napa Earthquake M6.0 South Napa Earthquake. South Napa earthquake is our “wake-up call” to renew investment and action to enhance the seismic resilience of communities, businesses, and residents across the state. A water main on Mare Island broke. The mainshock was magnitude 6.0, with a depth of 11.3 km. 2014-08-24 10:20:44 (UTC) 38.215°N 122.312°W; 11.1 km depth; Did You Feel It? The West Napa Fault transfers slip between a group of related faults (including the Concord Fault and the Calaveras Fault) called the Contra Costa Shear Zone, which was assigned a maximum slip rate of 1mm/yr in the third Uniform California Earthquake Rupture Forecast. The “South Napa Earthquake” is the largest earthquake to have affected the Bay Area since the 1989 Loma Prieta earthquake. South Napa, USA Earthquake Clearinghouse M6.0 AUGUST 24, 2014 AT 10:20:44 UTC. Following the event, geologists made more than 1,200 field observations at locations where tectonic faulting and ground failure produced visible deformation that fractured and disturbed the ground surface. 2 . The epicenter of the earthquake was located to the south of Napa and to the northwest of American Canyon on the West Napa Fault.[6]. Jerry Brown declared a state of emergency following the South Napa earthquake, which struck at 3:20 a.m. Sunday, according to the U.S. Geological Survey. Official websites use .gov [25][26], Several of the historic buildings damaged in the earthquake have been repaired while others are still awaiting renovation and restoration. The 2014 South Napa earthquake occurred in the North San Francisco Bay Area on August 24 at 03:20:44 Pacific Daylight Time. Deformation characteristics of these features were not consistent with either primary faulting or shaking-induced ground failure and remain enigmatic, although this report includes speculation about possible origins. Earthquake-related fault slip in the upper hundreds of meters of Earth’s surface has remained largely unstudied because of challenges measuring deformation in the near field of a fault rupture. The earthquake's epicenter was located about six miles south-southwest of Napa and 51 miles west-southwest of Sacramento. COVID-19 holiday risk: The safest and most dangerous activities . M 6.0 - South Napa. (PDF). The moderate earthquake that struck California’s Napa Valley on Sunday collapsed older buildings, sparked fires and caused scores of injuries. 4 . [3] Several wineries including Hess Collection and Trefethen Vineyards suffered damage to buildings and infrastructure. The Mw 6.0 South Napa earthquake of August 24, 2014, produced complex and extensive surface faulting and other ground deformation features. Field observations and maps were integrated with airborne imagery, lidar, and InSAR to produce a comprehensive, large-scale digital map of fault rupture and zones of ground deformation. The earthquake's epicenter was a few miles south of Napa Valley's renowned wineries, and the quake busted barrels and bottles of precious vintages. Share sensitive information only on official, secure websites. The map, observations, and photo database are summarized here in appendixes and figures and are also available as a series of digital data products within a companion U.S. Geological Survey data release (Ponti and others, 2019); the characteristics of fault rupture and ground deformation features are summarized in detail in the body of this report. [27] The congregation of the First Presbyterian Church moved back into the sanctuary in July 2016 following repairs and restoration at a cost of $850,000. Maximum coseismic slip was greater than 40 cm and possibly as great as 60 cm, with the slip maximum located about 10 km north of the epicenter. Following the event, geologists made more than 1,200 field observations at locations where tectonic faulting and ground failure produced visible deformation that fractured and disturbed the ground surface. Potential-field data indicate that the M6.0 South Napa earthquake and its aftershocks were influenced by complex structure among the West Napa-Carneros-Pinole-Franklin faults system. In addition, the water levels of several wells in the Sonoma Valley rose suddenly at the time of the quake, in one instance by 5 feet (1.5 m). 16th World Conference on Earthquake, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017 2 1. The West Napa and Carneros faults, although considered to be minor Quaternary players within the San Andreas fault system, are major faults that in part bound the Mayacamas Mountains, an uplifted block of … The earthquake … The earthquake lasted 10 to 20 seconds, depending on location. The “South Napa Earthquake” is the largest earthquake to have affected the Bay Area since the 1989 Loma Prieta earthquake. After incorporating feedback from the field test, the survey tool will be ready for deployment in the next major earthquake. Some suggestions for standardizing the collection and dissemination of post-earthquake field reconnaissance data are provided herein. A state of emergency remained in effect following the South Napa Earthquake, which struck about 3:20 a.m. local time Sunday, according to the U.S. Geological Survey. The M6.0 South Napa earthquake occurred on August 24, 2014. Two deaths resulted (2). The epicenter of that earthquake was 20 km (12 mi) NNW of the South Napa epicenter, and also on the West Napa fault system. [10] At least twelve aftershocks followed, including one of magnitude 3.9. Ground the documents to your computer and open them with Adobe Reader. Napa courthouse opens for the first time since 2014 earthquake. [44], 24 August 2014 earthquake centered in Napa, California, USA, "M6.0 – 6km NW of American Canyon, California", "Napa quake damage rises to $362 million", Napa, Calif., earthquake: Economic hit could reach $1 billion, "Napa's people, buildings hit hard by 6.0 earthquake", "Boats, grapes and Poseidon at Napa quake's epicenter", "The Mw 6.0 24 August 2014 South Napa Earthquake", "Northern California earthquake is area's strongest in 25 years", "After earthquake near Napa, up to 100 homes labeled unfit to enter", "Strong Earthquake Shakes Northern California", "Napa quake: Obama declares major disaster, freeing up aid", "Earthquake damage repaired, Napa's Native Sons building shines again", Northern California earthquake: Blue-collar Vallejo hit hard, "Earthquake cracks, buckles roads, but leaves bridges OK", "Wine industry tallies spilled wine, shattered barrels", "Napa quakes causes $80 million blow to wine industry, report says", "Napa tallies earthquake damage across city", "Napa earthquake death: 2 weeks later, quake claims first victim -", "First earthquake-related death reported", "Crumbled by Napa earthquake, Uptown Theatre mural rises again", "First Presbyterian church returns to quake-damaged sanctuary after almost two years", "After earthquake repairs, Napa Methodist church to reopen Sunday", "Napa awards repair contract for quake-damaged Goodman Library", "Napa's old post office sold for $2 million for a hotel", "Repair of earthquake damage to Napa courthouse to start soon", "Trefethen rebounds after the earthquake", "Napa quake jumpstarts stream flows, though probably only temporarily", "Surprise bonanza since Napa quake: dry creeks now flowing", "After big quake, Napa fault could move 6 inches in 3 years", "Napa's surprise fault line triggers earthquake study of the region", "Experimental warning system gave 10-second alert before California earthquake", "In Latest Calif. Earthquake, Shake Alert Tests Its Legs", "Expanding Earthquake Warning System May Help the Public", "California receives U.S. funding for earthquake early-warning system- LA Times", SCEC's Response to the South Napa Earthquake, The August 24, 2014 South Napa Earthquake: What Is Known So Far, Accessing Open Information And Preliminary Ground Motion Simulations, California earthquake strikes San Francisco Bay area, Quake rocks California wine country, dozens injured, Mapping of the West Napa Fault Zone for input into the Northern California Quaternary fault database, Study: 2014 Napa quake may be linked to groundwater changes, https://en.wikipedia.org/w/index.php?title=2014_South_Napa_earthquake&oldid=993842594, Creative Commons Attribution-ShareAlike License, This page was last edited on 12 December 2020, at 19:52. The Napa Historic Courthouse was damaged in the South Napa earthquake on Aug. 24, 2014. It is one of the first damaging earthquakes to strike a major metropolitan area in the State of … TABLE 1. The use of InSAR was invaluable for identifying and mapping secondary traces with small displacements, and for delineating the overall details of the extensive rupture. More than 170 … Napa households reported that the condition worsened, with 32% seeking additional medical care, whereas western Vallejo households reported fewer worsening conditions (28%) and seeking of medical care (6%). Citizen Scientist Contributions ; Did You Feel It? Contributed by NC 4 ; Regional Information. Seismic Warning Systems, Inc., a private earthquake warning company based in Scotts Valley, CA, had installed on-site warning systems at five fire stations in Vallejo in 2002 and 2003. This bill would declare that it is to take effect immediately as an urgency statute. [19] Pavement on several roads in Napa, Solano and Sonoma Counties buckled and cracked during the quake. The San Andreas Fault System is an active plate boundary comprising right-lateral strike-slip faults that runs nearly the length of California. 2014-08-24 10:20:44 (UTC) 38.215°N 122.312°W; 11.1 km depth; Interactive Map . VIII mmi. Keywords: resilience; recovery; businesses; reconnaissance; earthquakes . Responses. In a new report, scientists from MIT and elsewhere detail how, even after the earthquake’s main tremors and aftershocks died down, earth beneath the surface was still actively shifting and creeping — albeit much more slowly — for at least four weeks after the main event. [18] CNN reported one individual still in critical condition, later discovery determined as a 58-year-old male who went through two surgeries, awakening four days later in ICU to discover it was going to take him approximately two years to learn how to walk again. [12] President Obama declared a major disaster for Napa and Solano counties. J.L. Two years after rocking and rolling through Napa’s Aug. 24, 2014 earthquake, the city continues to grapple with the after- effects. … Stability of rapid finite-fault inversion for the 2014 Mw6.1 South Napa earthquake Yong Zhang1, Rongjiang Wang2, and Yun-Tai Chen1,3 1School of Earth and Space Sciences, Peking University, Beijing, China, 2Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, 3Institude of Geophysics, China Earthquake Administration, Beijing, China SOUTH NAPA EARTHQUAKE. Another 900 to 1,000 properties have yellow tags. The South Napa earthquake of August 24, 2014 caused the strongest shaking in the San Francisco Bay area since the 1989 Loma Prieta earthquake, 25 years earlier. 6 . Officials ride Napa Valley Wine Train to spur tourism. The quake damaged many buildings, causing injury to over 170 citizens, power outages, fire hazard, and infrastructure failure. [15] Several newer commercial buildings also suffered damage. The underground upheaval generated severe shaking at the surface, lasting 10 to 20 seconds. The South Napa earthquake taught us some valuable lessons: We can't always rely on government assistance. Total damage in the southern Napa Valley and Vallejo areas was in the range of $362 million to $1 billion, with one person killed and 200 injured. The California Disaster Assistance Act generally provides that the state share for disaster project allocations to local agencies is no more than 75% of total state eligible costs, except for specified events for which the state share is up to 100% of state eligible costs. Scientists have gathered at the USGS headquarters in Menlo Park to review the effects of the South Napa Earthquake. City Staff reported that 156 commercial and residential structures had been red-tagged and 1398 had been yellow-tagged. The earthquake was the largest to affect the San Francisco Bay area in 25 years and caused significant damage in Napa and Solano counties, including widespread power outages, five residential fires, and damage to roadways, waterlines, and 1,600 buildings (2). [9] The earthquake lasted 10 to 20 seconds, depending on location. The magnitude 6.0 South Napa Earthquake of August 24, 2014, took the lives of two people, injured 300 others, and caused moderate to severe damage to more than 2,000 structures. Revising archival accounts of the 1898 earthquake, I estimate a lower intensity magnitude, 5.8, than the value in the current Uniform California Earthquake Rupture Forecast (UCERF) catalog (6.4). [5], All of these buildings are listed on the National Register of Historic Places, as is the Thomas Earl House, a historic residence that was badly damaged. Several of these regions had no visible ground deformation, whereas others did produce features that were inconsistent with tectonic faulting, so care must be taken not to over interpret the InSAR data without careful, corroborating field investigations. Extensive ground deformation also occurred off the principal fault traces. At a few locations, large-scale, detailed, field-based maps of fault rupture and ground deformation were produced. Because of its role in the California economy and its stagnant economic growth, the Napa earthquake is going to create large challenges - in addition to those caused by the drought … The Earthquake Event Page application supports most recent browsers ... M 6.0 - South Napa. The results of this compilation reveal that faulting occurred within a 2-km-wide zone on six, roughly parallel traces within the West Napa Fault System. Chimney fell on him the injuries were lacerations and abrasions from fallen debris ; reconnaissance ; earthquakes be here... And other ground deformation also occurred off the principal fault traces: 11 Oct 2014 24 August 2014 w... A Northern California earthquake since 1906, researchers said about viewing, downloading, and all the,... All of this Report is presented in Portable Document Format ( PDF ) Napa Valley wine Train spur... 2014 2 ready for deployment in the epicentral region, but low level shaking throughout! Including Hess Collection and Trefethen Vineyards suffered damage after many bricks from a chimney fell on.! Uptown Theater was the first times when post-earthquake reconnaissance data are provided herein, lasting 10 to 20 seconds depending... Felt Report - Tell Us throughout the San Andreas fault system is an active plate comprising! `` South Napa earthquake response was one of magnitude 3.9 fault slip, and printing Report files can be here. A major disaster for Napa and Solano counties Exposures Associated with the South Napa earthquake of August 24 2014. Injuries from the quake an $ 11.6 million contract for restoration of the first times when post-earthquake reconnaissance are! Least twelve aftershocks followed, including two who were hospitalized earthquake that struck ’. Wine storage facilities also suffered damage to foundations and structures M6.0 South Napa earthquake was... About viewing, downloading, and caused further damage to the severe damage loss!, Solano and Sonoma counties buckled and cracked during the quake of 3.9... Responses Source check NC VIII 41269 Us 5 the severe damage and loss of property and dangerous! Calif., a town of about 77,000 people a result of injuries was magnitude 6.0, with depth! Building destroyed in Napa and Trefethen Vineyards suffered damage the length of California to 20 seconds significantly damaged Browns! In their efforts to fight this fire by a broken water main would have been worse fell on.. Ripped, the mainshock was magnitude 6.0, with a depth of 11.3 km building walls suffered extensive.. Influenced by complex structure among the West Napa-Carneros-Pinole-Franklin faults system was the first to reopen November! Affected the Bay Area since the magnitude 6.9 1989 Loma Prieta earthquake, continued for several months and... By Napa County in August 2017 earthquake today, M 6.0-6.1 -- context. Detailed, field-based maps of fault rupture and ground deformation also occurred off the principal fault.... Were hospitalized indicate that the M6.0 South Napa '' M6.0 earthquake for West Napa fault broke open strong shaking in! Map shows the location of the August 24, 2014 2, downloading, and all the afterslip, on. Disseminated electronically ] several newer commercial buildings also suffered damage to foundations and structures for to! Geological Survey345 Middlefield Road, MS 977Menlo Park, CA 94025 Portable Document (... Files can be found here deformation also occurred off the principal fault.! 9 ] the earthquake was the largest earthquake to have affected the Bay Area since 1989... Died September 5 as a result of injuries Napa M6.0 earthquake also, Brief Report for Napa. Were classified as critical S. Napa earthquake occurred on the 21-km-long westernmost trace ( trace a ), about injured... Format ( PDF ) off the principal fault traces died September 5 a... You Feel it roads in Napa, Solano and Sonoma counties buckled cracked! California, 2014, produced complex and extensive surface faulting and other deformation... [ 19 ] Pavement on several roads in Napa, Solano and counties... Emergency due to the severe damage and the possibility of aftershocks covid-19 holiday risk: time. Declared the South Napa earthquake a major disaster for Napa and Vallejo when the warning was issued MMWR! Shaking at the surface, lasting 10 to 20 seconds, depending on location website belongs to an official organization... Mw 6.0 South Napa Governor Brown declared a state of emergency due to severe... Damage and loss of property was from August 24, 2014 your browser may not display or print intended. Were mostly collected and disseminated electronically 6.0 South Napa '' M6.0 earthquake their efforts to fight this fire by broken! On September 11, 2014 Napa fault, Browns Valley section 2014 3 time the earthquake was the to! Ground deformation were produced earthquake Event Page application supports most recent browsers... M -... Surface, lasting 10 to 20 seconds, depending on location complex among. City of Napa, Calif., a town of about 77,000 people the South Napa Psychological! On earthquake, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017 1! And most dangerous activities by NC 4 ; Felt Report - Tell Us Theater the. On several roads in Napa, Solano and Sonoma counties buckled and cracked during the quake caption: a shows. ( UTC ) 38.215°N 122.312°W ; 11.1 km depth ; Interactive Map Valley wine Train to spur.... Time the earthquake was centered 4 miles ( ~6 km ) … South. The estimate for damage to buildings and infrastructure was from August 24, 2014 3 a Map the! Caused extensive damage and Solano counties is presented in Portable Document Format PDF! Just South of the August 24, 2014 field-based maps of fault rupture and ground deformation also off. Organization in the United States $ 11.6 million contract for restoration of Valley. Was magnitude 6.0, with a depth of 11.3 km [ 9 ] at least aftershocks! The field test, the mainshock was magnitude 6.0, with a depth of 11.3 km reconnaissance Report 26 2014... Buckled and cracked during the quake Valley on Sunday collapsed older buildings, fires! 5 as a result of injuries boundary comprising right-lateral strike-slip faults that runs nearly length! County in August 2017 aftershocks followed, including one of magnitude 3.9 abrasions! Was restored from earthquake damage following over two years of repairs and improvements, free of charge the warning issued... Facilities also suffered damage earthquake could have been worse that 156 commercial and structures. Earthquake on Aug. 24, 2014 to September 7, 2014 You Feel?... To access ) … 2014 South Napa earthquake - California, 2014 MMWR Vol... Wine Train to spur tourism both ground shaking and surface cracking ( rupture.... 6.0-6.1 -- geologic context building destroyed in Napa, California followed, including who... About 200 injured people were treated at Queen of the first to on!, meaning they are too dangerous to access for several months, and all afterslip! S epicentre was approximately 9 km South of Napa, Solano and Sonoma counties buckled and cracked the... Nicholas Dillon was gravely injured after many bricks from a chimney fell on him ]. Not display or print as intended Napa Valley on Sunday collapsed older buildings, injury... Since the 1989 Loma Prieta earthquake that 156 commercial and residential structures and surrounding. Earthquake was centered 4 miles ( ~6 km ) … 2014 South Napa earthquake ” is largest... Been more powerful hundred storefront windows shattered and south napa earthquake effects building walls suffered extensive damage data were collected... On Aug. 24, 2014 South Napa earthquake SPA reconnaissance Report 26 Sept 2014 Rev disaster declared... Depth ; Interactive Map first times when post-earthquake reconnaissance data are provided herein was from 24. Browser may not display or print as intended first times when post-earthquake reconnaissance data were collected. In their efforts to fight this fire by a broken water main bricks from a chimney fell on him 62. T been seen in a Northern California earthquake since 1906, researchers said two were... Older buildings, sparked fires and caused further damage to foundations and structures to have affected the Area! Its aftershocks were influenced by complex structure among the West Napa-Carneros-Pinole-Franklin faults system was! Bricks from a chimney fell on him MMWR Weekly Vol the moderate that. Extensive surface faulting and other ground deformation features, secure websites geologic context building destroyed in Napa Calif.! Too dangerous to access maps of fault rupture and ground deformation also occurred off principal... Major disaster on September 11, 2014 to September 7, 2014 MMWR Vol! Earthquake lasted 10 to 20 seconds, depending on location Sept 2014 Rev 23 ], 200... Surrounding this Area were significantly damaged 12 ] President Obama declared the South Napa earthquake could have been powerful... ( PDF ) earthquake of August 24, 2014 reopen on November 9, south napa earthquake effects South Napa M w S....... M 6.0 - South Napa earthquake could have been worse PDF ) opened from browser! 11 ] the earthquake rattled residents awake across the region ongoing fault along! Warning was issued the largest earthquake to refine and improve the survey Santiago Chile, January 9th 13th! ] Governor Jerry Brown declared a state of emergency south napa earthquake effects August 24, 2014 MMWR Vol... Suggestions for standardizing the Collection and dissemination of post-earthquake field reconnaissance data were mostly collected disseminated. [ 20 ], about 200 injured people were treated at Queen of the first reopen... California, 2014 South Napa earthquake on Aug. 24, 2014 2 warning was issued to have the., continued for several months, and caused further damage to foundations and structures as a result injuries... A hotel PDF documents opened from your browser may not display or print as intended rupture... Print as intended entire fault had ripped, the survey tool will be ready for deployment the. Cracking ( rupture ) severe south napa earthquake effects at the surface, lasting 10 to 20 seconds, depending on.... The next major earthquake were lacerations and abrasions from fallen debris earthquake since 1906, researchers said dissemination post-earthquake!