After the earthquake, PEER summarized various preliminary observations, in which the following ground motion characteristics were described (Kishida … 1: 11 Oct 2014 24 August 2014 M w 6.0 S. Napa Earthquake SPA Reconnaissance Report . This report is an overview of The earthquake was centered 4 miles (~6 km) … Nicholas Dillon was gravely injured after many bricks from a chimney fell on him. [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]. 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 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. 2 March 12 2016 Page 1 1.0 Introduction This report describes the performance of lifelines systems due to the South Napa, M 6.0 earthquake of August 24, 2014. 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]. Geotripper: Magnitude 6.0 Quake in Northern California - … 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). InSAR data also highlighted other areas with possible ground deformation—some of which are found coincident with previously mapped fault traces, whereas others are in areas where no faults were previously mapped. More information Part or all of this report is presented in Portable Document Format California Earthquake Authority South Napa Home Impact Study Phases 1 and 2 Integrated Findings Report Executive Summary Prepared for the California Earthquake Authority (CEA) By Sharyl Rabinovici1 January 2017 OVERVIEW This report summarizes findings of an in-depth California Earthquake Authority (CEA) research project to survey and analyze what happened to single-family … Napa courthouse opens for the first time since 2014 earthquake. [23], About 200 injured people were treated at Queen of the Valley Medical Center in Napa. 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. President Obama declared the South Napa Earthquake a major disaster on September 11, 2014 3. J.L. The mainshock was magnitude 6.0, with a depth of 11.3 km. Another 900 to 1,000 properties have yellow tags. PDF documents opened from your Contribute to citizen science. 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. Full Story. [32] An $11.6 million contract for restoration of the courthouse was awarded by Napa County in August 2017. Director, Earthquake Science Center—Menlo ParkU.S. The developer plans to turn the building into a hotel. Initially this was reported to be a 10-second warning in Berkeley,[39][40] but revised information indicates only a 5-second warning was provided. about viewing, downloading, and printing report files can be found here. ABC News station KGO … Please tell us about your experience. [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. [2] According to an early estimate by the USGS, the economic costs to Napa County may go as high as $1 billion. It was also reported that the estimate for damage to the City's infrastructure had reached $57.9 million. 2.4 magnitude earthquake 2020-12-04 10:55:59 UTC at 10:55 December 04, 2020 UTC Location: Epicenter at 38.815, -122.812 7.2 km from Cobb (4.2 miles) The South Napa earthquake’s epicentre was approximately 9 kilometres southwest of Napa, Calif., a town of about 77,000 people. South Napa Earthquake Links: USGS event page. The 2014 South Napa earthquake occurred in the North San Francisco Bay Area on August 24 at 03:20:44 Pacific Daylight Time. 16th World Conference on Earthquake, 16WCEE 2017 Santiago Chile, January 9th to 13th 2017 2 1. Geological Survey345 Middlefield Road, MS 977Menlo Park, CA 94025. Strong shaking occurred in the epicentral region, but low level shaking extended throughout the San Francisco Bay area. [16] Six major fires broke out,[9] and four homes in Napa Valley Mobile Home Park located in north Napa were destroyed. 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. The incident period was from August 24, 2014 to September 7, 2014. [25][26], Several of the historic buildings damaged in the earthquake have been repaired while others are still awaiting renovation and restoration. The “South Napa Earthquake” is the largest earthquake to have affected the Bay Area since the 1989 Loma Prieta earthquake. [20], Within days, County officials estimated the damage at $362 million. Contributed by NC 4 ; Felt Report - Tell Us! Scientists have gathered at the USGS headquarters in Menlo Park to review the effects of the South Napa Earthquake. 6 . City Staff reported that 156 commercial and residential structures had been red-tagged and 1398 had been yellow-tagged. South Napa Quake: The Facts A 6.0-magnitude earthquake with an epicenter at the southern edge of Napa struck at 3:20 a.m on Sunday, Aug. 24, 2014. In Napa, 62 properties remain red-tagged, meaning they are too dangerous to access. Earthquake warning systems could potentially give people time to take cover in the event of a quake, preventing injuries caused by falling debris, automatically stopping trains or shutting off gas lines. 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. affected by the August 24, 2014 South Napa M6.0 earthquake. Governor Brown declared a state of emergency on August 24, 2014 2. 2 . It is one of the first damaging earthquakes to strike a major metropolitan area in the State of … The system would cost $80 million in funding to run for five years in California, or $120 million for the whole West Coast. 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. 2014-08-24 10:20:44 (UTC) 38.215°N 122.312°W; 11.1 km depth; Did You Feel It? Injuries and Traumatic Psychological Exposures Associated with the South Napa Earthquake - California, 2014. 0 . Download the latest version of Adobe Reader, free of charge. [22], On September 16, 2014 in a report to the Napa City Council, members were briefed on the status of damage sustained. … Caption: A map shows the location of the August 24, 2014 earthquake just south of Napa, California. The 24 August 2014 Mw 6.0 South Napa, California earthquake produced significant offsets on 12 borehole strainmeters in the San Francisco Bay area. South Napa Earthquake today, M 6.0-6.1--geologic context Building destroyed in Napa. [10] Governor Jerry Brown declared a state of emergency due to the severe damage and the possibility of aftershocks. On Sunday, August 24, 2014 at 3:20 a.m. (local time) a magnitude 6.0 earthquake struck near Napa, California. The moderate earthquake that struck California’s Napa Valley on Sunday collapsed older buildings, sparked fires and caused scores of injuries. The underground upheaval generated severe shaking at the surface, lasting 10 to 20 seconds. [9] The Goodman Library, Napa County Courthouse Plaza, Sam Kee Laundry Building, Downtown U.S. Post Office, Alexandria Hotel and Annex, Native Sons of the Golden West building,[14] First United Methodist Church, and First Presbyterian Church all suffered moderate to extensive damage. A .gov website belongs to an official government organization in the [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. the documents to your computer and open them with Adobe Reader. Residential structures and wineries surrounding this area were significantly damaged. 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. COVID-19 holiday risk: The safest and most dangerous activities . Several wine storage facilities also suffered damage and loss of property. [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. 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. [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. More than 170 … The United States Geological Survey (USGS) estimated that 15,000 people experienced severe shaking, 106,000 people felt very strong shaking, 176,000 felt strong shaking, and 738,000 felt moderate shaking. 4 . United States. 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. 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 Historic buildings in wine country were damaged, and power loss threatens wineries' stock. [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. Bay Area leaders discuss earthquake preparedness. [10] At least twelve aftershocks followed, including one of magnitude 3.9. [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. One person died September 5 as a result of injuries from the quake. Keywords: resilience; recovery; businesses; reconnaissance; earthquakes . [12] President Obama declared a major disaster for Napa and Solano counties. (PDF). LockA locked padlock 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. Gov. Two deaths resulted (2). 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. 64, No. [41] This means the S-waves had already arrived in Napa and Vallejo when the warning was issued. A lock ( Extensive ground deformation also occurred off the principal fault traces. 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. 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 … 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). [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. 9 . The Mw 6.0 South Napa earthquake of August 24, 2014, produced complex and extensive surface faulting and other ground deformation features. [3] Several wineries including Hess Collection and Trefethen Vineyards suffered damage to buildings and infrastructure. [31] The United States Postal Service determined that repairing the building would be too costly and sold it to a developer for $2 million. 3:20 a.m.: The time the earthquake rattled residents awake across the region. 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. This total included repairs made to 144 water mains, repairs or replacement of a compromised water tank in Brown's Valley that is part of the City's water system and repair of 294 locations where streets and sidewalks had been damaged. M 6.0 - South Napa. [24] In Vallejo, 49 people were injured, including two who were hospitalized. Most are … A water main on Mare Island broke. The earthquake's epicenter was located about six miles south-southwest of Napa and 51 miles west-southwest of Sacramento. browser may not display or print as intended. But the South Napa earthquake could have been worse. Ponti, D.J, Rosa, C.M, and Blair, J.L., 2019, The Mw 6.0 South Napa earthquake of August 24, 2014—Observations of surface faulting and ground deformation, with recommendations for improving post-earthquake field investigations: U.S. Geological Survey Open-File Report 2019–1018, 50 p., 15 appendixes, https://doi.org/10.3133/ofr20191018. This bill would declare that it is to take effect immediately as an urgency statute. Secure .gov websites use HTTPS 2019-1018, Explore recent publications by USGS authors, Browse all of Pubs Warehouse by publication type and year, Descriptions of US Geological Survey Report Series, The Mw 6.0 South Napa earthquake of August 24, 2014—Observations of surface faulting and ground deformation, with recommendations for improving post-earthquake field investigations, Characteristics of Off-fault Ground Deformation. [15] Several newer commercial buildings also suffered damage. Firefighters were hampered in their efforts to fight this fire by a broken water main. … The “South Napa Earthquake” is the largest earthquake to have affected the Bay Area since the 1989 Loma Prieta earthquake. An experimental earthquake warning system being developed by the Berkeley Seismological Laboratory issued a warning upon detecting the P-waves five seconds before the slower, more destructive S-waves arrived in Berkeley. Official websites use .gov Open-File Report At a few locations, large-scale, detailed, field-based maps of fault rupture and ground deformation were produced. The transit impact of the South Napa earthquake, as reported by Bay City News: Amtrak's Capitol Corridor train service has been temporarily suspended this morning between Sacramento and San Jose while crews inspect the tracks for damage following the earthquake early this morning near American Canyon. Number and percentage of households reporting injuries after the South Napa earthquake, by injury characteristics — Napa On August 24, 2014, the northern San Francisco Bay Area was struck by the largest earthquake to impact the Bay Area since the 1989 M6.9 Loma Prieta earthquake. Although the structure of the Uptown Theater was determined to be sound, the building was red-tagged due to damage to the theater's ceiling. 2014 South Napa Earthquake to refine and improve the survey. [28] The United Methodist Church received $2.2 million in repairs and upgrades and reopened the doors to its congregation in November 2015. The M6.0 South Napa earthquake occurred on August 24, 2014. This network of faults trends north-northwest in the area of the West Napa Fault, where it is 50 miles (80 km) wide from west to east. [17] In Vallejo, several hundred storefront windows shattered and many building walls suffered extensive damage. Artist impression of Chicxulub impact. Governor Brown declared a state of emergency on August 24 2, … 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 Mw 6.0 South Napa earthquake of August 24, 2014, produced complex and extensive surface faulting and other ground deformation features. ) or https:// means you’ve safely connected to the .gov website. 10-20 seconds: The length of the earthquake, which hit about six miles south of Napa… Only part of the West Napa Fault broke open. VIII mmi. Governor Brown declared a state of emergency on August 242, and President Obama declared the South Napa Earthquake a major disaster on September 11, 20143. The San Andreas Fault System is an active plate boundary comprising right-lateral strike-slip faults that runs nearly the length of California. The earthquake … All earthquake… This bill would add the August 24, 2014, South Napa Earthquake, Earthquake to the list of events for which the state share of state eligible cost is up to 100%. The South Napa earthquake taught us some valuable lessons: We can't always rely on government assistance. 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. 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. Two years after rocking and rolling through Napa’s Aug. 24, 2014 earthquake, the city continues to grapple with the after- effects. South Napa M 6.0 Earthquake Rev. Injuries and Traumatic Psychological Exposures Associated with the South Napa Earthquake — California, 2014 MMWR Weekly Vol. The disaster was declared on September 11, 2014. The Data Map displays earthquake damage and impact observations from EERI field teams and other contributors using EERI's Photo Upload … "South Napa" M6.0 earthquake occurred west of A Year After South Napa Earthquake, Damage Proves Widespread and Costly Ninety-one percent of respondents in CEA research experienced some kind of damage SACRAMENTO, Calif., August 24, 2015 – The California Earthquake Authority (CEA) today announced preliminary findings of research on how the 6.0-magnitude earthquake that struck Napa one year ago today affected single-family homes. Nearly two years ago, on August 24, 2014, just south of Napa, California, a fault in the Earth suddenly slipped, violently shifting and splitting huge blocks of solid rock, 6 miles below the surface. Through an online survey, interviews, and home inspections, a large amount of new data were collected about the characteristics of Napa area houses and the effects Interviews with members of households affected by the South Napa earthquake indicated that in addition to exten- sive property damage, many members of the community experienced injuries or mental health stressors, or both, and these findings suggest immediate public health and future preparedness priorities for affected communities. Federal assistance took over two months to be made available after the earthquake, meaning residents had to financially cope on their own for 60 days. The earthquake lasted 10 to 20 seconds, depending on location. Responses. Most of the fault slip, and all the afterslip, occurred on the 21-km-long westernmost trace (Trace A). At 6.0 on the moment magnitude scale and with a maximum Mercalli intensity of VIII (Severe), the event was the largest in the San Francisco Bay Area since the 1989 Loma Prieta earthquake. Share sensitive information only on official, secure websites. Contributed by NC 4 ; Regional Information. Officials ride Napa Valley Wine Train to spur tourism. 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. 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. The quake damaged many buildings, causing injury to over 170 citizens, power outages, fire hazard, and infrastructure failure. [9] At least six of the injuries were classified as critical. The earthquake was the largest earthquake in the Bay Area since the magnitude 6.9 1989 Loma Prieta earthq… Many streams and springs, which were dry or nearly dry before the 2014 Mw6.0 South Napa earthquake, started to flow after the earthquake. 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). Disaster relief: South Napa Earthquake. In addition, a M3.0 earthquake … Ground 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. ShakeMap. South Napa M w 6 Earthquake Reconnaissance Report 26 Sept 2014 Rev. M6.0 South Napa Earthquake M6.0 South Napa Earthquake. 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. The South Napa Earthquake caused extensive damage through both ground shaking and surface cracking (rupture). The Uptown Theater was the first to reopen on November 9, 2014. The South Napa earthquake response was one of the first times when post-earthquake reconnaissance data were mostly collected and disseminated electronically. [11] The earthquake was the largest earthquake in the Bay Area since the magnitude 6.9 1989 Loma Prieta earthquake. Such surface eruptions hadn’t been seen in a Northern California earthquake since 1906, researchers said. 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. 2014-08-24 10:20:44 (UTC) 38.215°N 122.312°W; 11.1 km depth; Interactive Map . Catalog MMI Source Description check NC VIII ATLAS 3 ShakeMap Atlas v4 ATLAS VIII ATLAS 3 NORTHERN CALIFORNIA NC VIII NC 4 6.4 km (3.9 mi) … Artist unknown. 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. 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. The South Napa earthquake produced rare fissures. Education and Outreach Best Practices Team of DR-4193-CA, the South Napa Earthquake Disaster. If the entire fault had ripped, the earthquake would have been more powerful. For best results viewing and printing PDF documents, it is recommended that you download TABLE 1. 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%). State Sen. Bill Dodd issued a … After incorporating feedback from the field test, the survey tool will be ready for deployment in the next major earthquake. 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. The South Napa earthquake along the San Andreas Fault reached 6.0, caused roughly $1 billion in damage, injured 200, killed one and jolted plenty of nerves. 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. 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. 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. [9] The earthquake lasted 10 to 20 seconds, depending on location. The quake was the strongest to strike the Bay Area since the 6.9 Loma Also, Brief Report for West Napa fault, Browns Valley section. The epicenter of that earthquake was 20 km (12 mi) NNW of the South Napa epicenter, and also on the West Napa fault system. At least twelve aftershocks followed, including one of magnitude 3.9. 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. [33] The heavily damaged Trefethen Vineyard Eschol building was restored from earthquake damage following over two years of repairs and improvements. Injuries were classified as critical and loss of property geologic south napa earthquake effects building destroyed in Napa and Solano.... Chimney fell on him most recent browsers... M 6.0 - South Napa earthquake its! Is the largest earthquake to have affected the Bay Area since the 1989 Loma Prieta earthquake first... Risk: the time the earthquake … the M6.0 South Napa earthquake south napa earthquake effects California, 2. Solano counties supports most recent browsers... 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