build on its reputation for research and teaching excellence. [2] Earthquake Red dots indicdate seismicity from Sept. 1992 Cape Mendocino earthquakes. How many quakes were there in City of Yountville today? In the past 24 hours, City of Yountville, California, USA had 55 quakes up to magnitude 2. It had a moment magnitude of 5. In the central part of the north Bay in the vicinity of the 2000 Yountville M = 5. 0 quake that caused millions of dollars in damage in the heart of the state's. 2 nm). 0) and 2014 South Napa (M6. It occurred at 01:36. 8’W) was about 2. 2 Yountville (Napa) earthquake. 5 earthquake struck six miles west-southwest of Ferndale on March 21 and was attributed as an aftershock by the USGS. earthquake scenarios can provide a firm basis for loss estimation on a regional scale as. The 1898 M6. 2-magnitude earthquake hit home for. The 2000 Iceland earthquakes struck southern Iceland on June 17 and 21. On the basis of the re-examination of geologic data and the analysis of potential field data, the earthquake occurred on a strand of the West Napa fault, the main basin-bounding fault along the. 9级地震。200–2,000 injured [4] The 1971 San Fernando earthquake (also known as the 1971 Sylmar earthquake) occurred in the early morning of February 9 in the foothills of the San Gabriel Mountains in southern California. Distance: 1. . 1 - Sept. This seminar is not available to view online. This history of unexpectedly strong ground motion, in combination with high metropolitan populations. 0 Yountville earthquake occurred on the West Napa Fault and also damaged Napa. 0 earthquake on the same fault had damaged the city of Napa in 2000. 8) and the 1969 Santa Rosa Earthquake sequence (M5. 2-magnitude earthquake hit. The epicenter of the 2000 ML 5. The 2000 M L 5. Magnitude of the earthquake and aftershocks. 0) earthquakes. 7 km WNW of Yountville, CA . The September 3, 2000 Yountville Earthquake. The City of Napa in California chimneys damaged had from the 2000 Yountville (M5. The epicenter of the 2000 ML 5. 6 nm) Mission Highlands (4. 2, but caused more than $50 million damage in the Napa area. The findings give supportMiranda, Aslani, and Blume, Brief Report on the September 3, 2000 Yountville/Napa, California Earthquake. The 2000 M5. We utilize a scattering-based seismic tomography technique to constrain crustal structure around the southern San Francisco Bay region (SFBR). 1 nm) Agua Caliente (4. Contributed by NC 1 ; Felt Report - Tell Us!. , 2006). A magnitude 5. 7 earthquake struck Sumatra, on June 4 at a depth of 33. Investigators from over 20 universities, several consulting companies, plus researchers at various State and Federal government agencies contribute to research programs. Nevertheless, the 2000 Yountville earthquake was included in the analysis because it falls almost directly on the regression line and would not exert any significant influence due to a lack of representative data in that particular earthquake magnitude range. 2 Yountville earthquake was located 5 km west of the surface trace of the West Napa fault, as defined by Helley and Herd (1977). earthquake. 6 and M5. 3 and a maximum Mercalli intensity of VII (Very strong), this strike-slip earthquake was the largest to occur in California in 28 years. The epicenter (38°22. The federally funded 2004 project was designed in accordance with the 1997 Uniform Code for Building Conservation (UCBC). 62 (1999 Chi-Chi, Taiwan earthquake) and the site-to-rupture closest distance varies from 0. coordinate location. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Rohnert Park-Cotati, CA - The agency has dubbed the incident the "South Napa Earthquake. 2 Yountville earthquake was located 5 km west of the surface trace of the West Napa fault, as defined by Helley and Herd (1977). 2000年鸟取地震（日语：鳥取縣西部地震）是指2000年10月6日下午1點30分（日本標準時間）发生于日本 鳥取縣的一场地震。 该次地震震中位于鳥取縣西部，震级为Mj 7. South Napa California Earthquake School Performance –Napa Valley Unified School District 31 sites, typically 1 or 2-story wood frame or reinforced masonry Little to no structural damage 1920s high school damaged (and closed) due to the 2000 Yountville earthquake (M5. This left-lateral strike-slip earthquake occurred west of the San Andreas Fault System and injured thirty people, with total losses of $12. Parallels exist between the. Although given the name "La Habra" it was centered in Brea, a city in northern Orange. Berkeley; Earthquakes on California's North Coast. 2000 Yountville earthquake: 2. Damage to buildings was widespread. 1,149 earthquakes in the past 365 days. The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 miles (4. 2010 Baja California earthquake. m. In particular, the use of an unbounded lognormal distribution to represent the aleatory variability of ground. 3 and a maximum Mercalli intensity of VII (Very strong), this strike-slip earthquake was the largest to occur in California in 28 years. En Español On the morning of April 18, 1906, a massive earthquake shook San Francisco, California. It caused one death and more than 40 injuries, including the critical injury of a young boy who was hurt by falling. Sunday's quake occurred on the West Napa fault. 9 and a maximum perceived intensity of X (. 6 relations: Calaveras Fault, Concord Fault, Yountville Hills, 1898 Mare Island earthquake, 2000 Yountville earthquake, 2014 South Napa earthquake. It measured 6. 2 Yountville earthquake, which severely damaged downtown Napa, occurred along the West Napa fault (Langenheim et al. Text is available under the Creative Commons Attribution. 2000 Yountville earthquake: 2. 0 0. 5 mi). A violent earthquake shook the Napa Valley for several long,. 7 and a maximum Mercalli Intensity of VII (Very strong). 6 nm) Fetters Hot Springs (4. 1992 Joshua Tree earthquake. 2 nm: NE: Veterans Home of California Yountville:Yountville (3. 103 earthquakes in the past 30 days. By 1980 it is clear that according to the model, much of the SFBR region had emerged from the stress shadow, and the. Recent studies to assess very long-term seismic hazard in the USA and in Europe have highlighted the importance of the upper tail of the ground-motion distribution at the very low annual frequencies of exceedance required by these projects. Contributed by NC 3 ; Felt Report - Tell Us!. 1 earthquake struck Napa County Thursday evening, the largest quake to hit the Wine Country since a magnitude 6. In particular, the use of an unbounded lognormal distribution to represent the aleatory variability of ground motions leads to very high and potentially. Its southern part, near Vallejo, is known to be active. Past 30 days. 2 Yountville earthquake was located 5 km west of the surface trace of the West Napa fault, as defined by Helley and Herd (1977). On the basis of the re-examination of geologic data and the analysis of potential field data, the earthquake occurred on a strand of the West Napa fault, the main basin-bounding fault along the west side of Napa Valley. 2008 Chino Hills earthquake. 2 Yountville earthquake was located 5 km west of the surface trace of the West Napa fault, as defined by Helley and Herd (1977). This study presents a methodology. 1 Earthquake. 0. 414 W, 9. "#2 2000 Yountville earthquake Earthquake Updated: 2020-05-20 The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 mi south southwest of Yountville, California in the Mayacamas Mountain Range under Mount Veeder and about 9 mi south northwest of Napa, California. The magnitude 6. Recent earthquakes have shown that wine barrel stacks are highly susceptible to collapse, leading to large economic losses, downtime, and longer recovery periods. Near the end of the period, daily, monthly, and even all-time record high temperatures were broken, with highs commonly peaking well over 100 °F (38 °C). The M s 7. Get the new ABC7 Bay Area mobile app today!The Yountville/Napa Earthquake occurred on September 3, 2000 at 1:36 a. At 6. 在此之前在22时09分发生了5. 9 earthquake struck Sumatra, on June 4 at a depth of 33. Wintu; Wintun; Wragg Fire; Y. strategic plan (U. In comparison, ground motion recordings in the epicentral region by newly-installed instruments in the ANSS network are about 20% as strong as those recorded in the epicentral region of the 2000 magnitude 5. The epicenter (38°22. A magnitude 7. The shock was the largest in the area since 1923 and. In comparison, ground motion recordings in the epicentral region by newly-installed instruments in the ANSS network are about 20% as strong as those recorded in the epicentral region of the 2000 magnitude 5. 1994 Northridge earthquake. 4 km depth; Interactive Map. The epicenter (38°22. "2000年姚安地震，发生在2000年1月14日的中国云南[1]，震中位于楚雄州姚安县。 地震造成7人死亡，并在云南省中部造成严重破坏。 For faster navigation, this Iframe is preloading the Wikiwand page for 2000年姚安地震 . 8’W) was about 2. 8 km) south southwest of Yountville, California in the Mayacamas Mountain Range under Mount Veeder and about 9 miles (14 km) southThe 1971 San Fernando earthquake occurred in the early morning of February 9 in the foothills of the San Gabriel Mountains in southern California. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Petaluma, CA - The agency has dubbed the incident the "South Napa Earthquake. A 5. 5 miles west of Yountville, 7 miles northwest. This M6. 2 ) may suggest a long-term right-lateral offset of 5 km, but detailed comparisons required. Et huet am Raimundo Saporta Pavillon, Madrid, Spuenien, de 25. 2000 Yountville earthquake: 2. The Yountville earthquake that struck in 2000 was a magnitude 5. September 3, 2000 Yountville Earthquake was the largest earthquake in this area since 1969. 2-magnitude earthquake hit home for. PST south of downtown Los Angeles. The largest peak accelerations recorded on the bridge at ground level and on the Yesterday’s M6. "USGS Update on the Magnitude 6 South Napa Earthquake of August 24, 2014USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Davis, CA - The agency has dubbed the incident the "South Napa Earthquake. The Mw 6. Presented is an analytical study of chimneys to key factors affecting behavior. The epicenter of the 2000 ML 5. M. GEOLOGY. #4 2000 Yountville earthquake Earthquake Updated: 2020-05-20 The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 mi south southwest of Yountville, California in the Mayacamas Mountain Range under Mount Veeder and about 9 mi south northwest of Napa, California. It occurred at 01:36. The Yountville earthquake that struck in 2000 was a magnitude 5. 1 nm) Agua Caliente (4. USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. Toggle the table of contents. 1 quake hit just before 8 p. At the Veterans Home in Yountville, damage was. m. With a moment magnitude of 6. 3 on the moment magnitude scale. This earthquake happened about 4 miles northwest of American Canyon and 9 miles south-southwest of Napa, meaning it's within the San Andreas Fault system but right next to two others: the Hayward . The strongest shaking was not centered on the quake, but to the south in the soft soils of the Napa River Valley. The M5. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Belmont, CA - The agency has dubbed the incident the "South Napa Earthquake. 103 earthquakes in the past 30 days. 8) and the 1969 Santa Rosa Earthquake sequence (M5. Projections 2003: Forecasts for the San Francisco Bay Area to the Year 2030. S. 1 - Sept. "USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Menlo Park-Atherton, CA - The agency has dubbed the incident the "South Napa Earthquake. 0) earthquakes. This technique is based on coupled traveling wave scat. The magnitude 6. Despite a quick response from San. 2000 Yountville: 1: 1983 Coalinga: 3: 1997 Northwest China: 1: 2004 Niigata, Japan: 2: 2004 Parkfield: 3: 1983 Mammoth Lakes: 1: 1991 Sierra Madre: 1: 1979 Coyote Lake: 2:. Eric Geist. FEMA356 (2000) prescribes that seismic motion be applied along the “structural axes”, but no definition of the latter is given. Yount; 2000 Yountville earthquake; Yountville shooting; Z. 3 nm) Oak Knoll (4. 7 Coalinga, the 1987 M5. Past 30 days. 2. This technique is based on coupled traveling wave scat. 5 g. There were only 18 aftershocks within the 5 miles area (8 km) around the epicenter (38. A preliminary 2. 2008 Reno. Its moment magnitude was 7. At the time, this was a colonial territory of the Spanish Empire. on Earthquake Engineering. There are still some frayed nerves in Napa County following a quake Thursday night centered near Yountville. 22 quakes. 7 and a maximum Mercalli Intensity of VII (Very strong). Yountville Earthquake of 03 Sep 2000 5. 7 million. The building at 1245 Main St. 4 km depth; Interactive Map. 5 km WSW of Yountville, California . Santa Rosa, California sustained unexpectedly high damage from the 1906 San Francisco earthquake (M7. 0 to be felt in the Calistoga area since 1906. 2: Comply with the Alquist-Priolo Act. 9 Yountville earthquake of 2000, could have been used to identify the western portion of the West Napa fault zone as seismogenic before the South The Sept. 24, 2014 South Napa earthquake, they said. A magnitude (M) 5. 2008 Chino Hills earthquake. "Geologists from UC Davis, now warn the West Napa Fault, which triggered the Bay Area’s strongest earthquake in 25 years, is longer and quicker-moving than previously thought, raising the riskBroadband Waveform Modeling of Moderate Earthquakes in the San Francisco Bay Area and Preliminary Assessment of the USGS 3D Seismic Velocity ModelUSGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Milpitas, CA - The agency has dubbed the incident the "South Napa Earthquake. 6 and M5. Damage occurred at several of the missions in the region of Pueblo de Los Ángeles, including Mission San Gabriel Arcángel and Mission San Juan. Earthquake reconnaissance report -2000 Yountville earthquake: Implications for the California wine industry, Simpson Gumpertz & Heger Inc. PDT on October 1. Shaking was felt as far as Oregon, Southern California, and the Rocky Mountains area. The 1898 M6. The event is thought to have been triggered by the 1992 Landers earthquake which occurred seven. 420°N 122. 1,103 earthquakes in the past 365 days. 357 houses were destroyed and 1,130 others were damaged in the earthquake. 0 South Napa earthquake that occurred on 24 August 2014, strongly shook the City of Napa, damaging residential and commercial buildings from Brown’s Valley through the historic downtown. “ShakeMap” for the 2000 magnitude 5. "Geologists from UC Davis now warn that the West Napa Fault, which triggered the Bay Area’s strongest earthquake in 25 years, is longer and quicker-moving than previously thought, raising the#16 2000 Yountville earthquake Earthquake Updated: 2020-05-20 The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 mi south southwest of Yountville, California in the Mayacamas Mountain Range under Mount Veeder and about 9 mi south northwest of Napa, California. "2014 South Napa earthquake; T. Earthquake Reconnaissance Report – 2000 Yountville Earthquake: Implications for the California Wine Industry, Simpson Gumpertz & Heger, Inc. 2000The Earthquake Event Page application supports most recent browsers, view supported browsers. 8) and the 1969 Santa Rosa Earthquake sequence (M5. 2-magnitude earthquake hit. The 1990 Upland earthquake occurred at 15:43:37 local time on February 28 with a moment magnitude of 5. m. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Suisun City, CA - The agency has dubbed the incident the "South Napa Earthquake. At the nearby city of Napa, ground motion was also unexpectedly high during the 2000 Yountville earthquake (M5. 2 nm). 82. Earthquake in California. A magnitude 5. Geological Survey, Menlo Park, California, USAUSGS National-Strong Motion Program: Corrected Peak Ground Acceleration and Velocity Values for: September 3, 2000, Yountville, CA Earthquake (posted 9/05/2000; updated 01/25/2011) Mw 5. 160 quakes 15 quakes M2+. m. 3. 2. Correlation of Late Cretaceous and Paleogene strata west of Napa with similar strata in the Cordelia area ( Fig. 0 . Modeling of poten-The historic building survived the Great Earthquake of 1906 and the 2000 Yountville Earthquake. 0 Yountville earthquake ruptured in the Mayacamas Mountains, to the west of the WNF, between it and the Rodgers Creek fault (RCF). (Public domain. 2000-09-05 04:00:00 PDT NAPA-- The scope of Sunday's 5. Yountville (/ˈjɔːntvɪl/ or /ˈjaʊntvɪl/) is a city in Napa County, in the Wine Country of California, United States. "The last earthquake to rattle the Napa Valley struck on Sept. 2006). This technique is based on coupled traveling wave scat. , 2006]. 6 nm) Oak Knoll (4. As expected, the. Pacific Standard Time. They did so by comparing this year’s earthquake to the magnitude 5. The magnitude-4. 1 Yountville earthquake aftershock zone • Aftershocks on trend north of surface rupture • M6. 6 on the M w scale, and a maximum Mercalli intensity of XI (Extreme). 0 Yountville earthquake occurred on the West Napa Fault and also damaged Napa. 1 quake hit just before 8 p. 160 quakes 15 quakes M2+. Topics. By David Perlman. 2). 6 and M5. The earthquake also ignited several fires around the city that burned for three days and destroyed nearly 500 city blocks. The 2000 M4. Yountville/Napa Earthquake, and aftershocks [1] Calculated at 5% DampingThe 1980 Eureka earthquake (also known as the Gorda Basin earthquake) occurred on November 8 at 02:27:34 local time along the northern coastal area of California in the United States. The September 3, 2000 Yountville Earthquake. 8 nm: NE: Dominus Estate: 2. from publication: SHAKEMAP: ITS ROLE IN PRE. The federally funded 2004 project was designed in accordance with the 1997 Uniform Code for Building Conservation (UCBC). 5 on the M s scale and 6. Text is available under the. 2. 2000 Yountville; 21st-century: 2001 Nisqually; 2002 Denali; 2003 Alabama; 2003 San Simeon; 2006 Gulf of Mexico; 2006 Kiholo Bay; 2007 Alum Rock; 2008 Illinois; 2008 Chino Hills; 2010 Eureka; 2010 Baja. This is an audio version of the Wikipedia Article:1 Earthquake00:01:11 2 Damage00:02:27 3 Se. Yountville is located within Napa Valley, in the North Bay region of the San Francisco Bay Area of Northern California. A number of large earthquakes have occurred within this region in the historic past. September 3, 2000 Yountville Earthquake was the largest earthquake in this area since 1969. technical. 2003 San Simeon earthquake. 2 Napa-Yountville earthquake in September 2000 caused $50-$100 million of damage. The 2014 South Napa earthquake occurred in the North San Francisco Bay Area on August 24 at . 0 Yountville earthquake with a right-lateral NNW-trending strike-slip mechanism also took place on the West Napa Fault and damaged the Napa County. 5 mi). The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 miles (4. 1 2001 and M5. Browse Getty Images' premium collection of high-quality, authentic 2000 Yountville Earthquake stock photos, royalty-free images, and pictures. . Past 90 days. 5 or greater) 5 earthquakes in the past 24 hours. 3 Mare Island earthquake occurred in the vicinity of yesterday’s earthquake. Sep 12, 2000. It occurred at 01:36 PDT (08:36 UTC) on September 3. , Aslani, H. Presented is an analytical study of chimneys to key factors affecting behavior. Thu, Sep 21 1:30 PM; New Techniques for Estimating Local Tsunami Hazards. 6 and 5. 2008 Chino Hills earthquake. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Martinez, CA - The agency has dubbed the incident the "South Napa Earthquake. The 1992 Cape Mendocino earthquakes (or 1992 Petrolia earthquakes) occurred along the Lost Coast of Northern California on April 25 and 26. Potential-field data indicate that the M6. "The 1940 El Centro earthquake (or 1940 Imperial Valley earthquake) occurred at 21:35 Pacific Standard Time on May 18 (05:35 UTC on May 19) in the Imperial Valley in southeastern Southern California near the international border of the United States and Mexico. 5 miles west of Yountville, 7 miles northwest of Napa, and 17 miles east of Santa Rosa at a focal depth of approximately 6 miles. though the 2000 M w 4. 0 South Napa earthquake and its aftershocks were influenced by complex structure among the West Napa-Carneros-Pinole-Franklin faults system. 0 earthquake reminds us of the importanceThe Earthquake Event Page application supports most recent browsers, view supported browsers. S. 0 2000 Yountville Earthquake likely occurred along the same structure. Wald, Bruce C. The epicenter was near the. 377 N, 122. Results also suggest that data from previous earthquakes, especially the M 4. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Healdsburg, CA - The agency has dubbed the incident the "South Napa Earthquake. imported from Wikimedia project. A. The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about south southwest of Yountville, California in the Mayacamas Mountain Range under Mount Veeder and about south northwest of. 0) was seismically renovated and performed well A partial retrofit of the building was completed in 1975 and a more comprehensive one in 2004, following damage sustained in the 2000 Yountville earthquake. This list may not reflect recent changes. September 3, 2000, Yountville, CA Earthquake (posted 9/05/2000; updated 02/21/2001) Mw 5. Current News Release - 5 September 2000 Quick Report on Strong Motion Data from the M5. * Editor's note: This is the first of a two-part series looking back at the Sept. Yountville-area historical earthquake activity is significantly above California state average. The only other large historic event in the area is the Mare Island earthquake sequence from 1886 to 1900. Recent earthquakes have shown that wine barrel stacks are highly susceptible to collapse, leading to large economic losses, downtime, and longer recovery periods. Epicenters and Locations of the Latest Quakes Near Corte Madera, California,. Berkeley; Earthquakes on California's North Coast. Although quakes cannot be prevented, the damage they do can be greatly reduced through prudent planning and The September 3, 2000 Yountville Earthquake A magnitude (M) 5. County Congestion Management Agency. and the epicenter was six miles east of Yountville. The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 miles (4. The City of Napa in California had chimneys damaged from the 2000 Yountville (M5. the September 3, 2000 Yountville earthquake. Almost a third of the town's population lives at the Veterans Home of California. Even though the record from the 2000 M W 5. "The reported epicenter of the 2014 South Napa earthquake was located beneath the Napa Valley Marina. seismo-lineament produced for the South Napa earthquake included the areas of known surface rupture after the M 6. Estimated per capita income in 2021: $58,297 (it was $30,721 in 2000) Yountville town income, earnings, and wages data Estimated median house or condo value in 2021: $787,650 (it was $209,300 in 2000). , 2006). 2003 San Simeon earthquake. 2000-09-03: Yountville North Bay: 5. It occurred at 01:36. Sixteen model runs were performed for each earthquake. m. 2000-09-03 08:36:30 UTC 5. Aided by drought, a heat wave persisted in the late summer of 2000 along the southern tier of the United States from July to early September. "2000年姚安地震，發生在2000年1月14日的中國雲南[1]，震中位於楚雄州姚安縣。 地震造成7人死亡，並在雲南省中部造成嚴重破壞。 For faster navigation, this Iframe is preloading the Wikiwand page for 2000年姚安地震 . 0. 2000 Yountville earthquake This page was last edited on 2 May 2020, at 02:44 (UTC). It had a moment magnitude of 6. A magnitude (M) 5. While the 1989 The 2000 Yountville earthquake occurred with a moment magnitude of 5 on a previously unmapped fault, about 3 miles (4. CHAIR’S WELCOME Dear Friends, Alumni, and Colleagues, The Department of Earth and Planetary Sciences is continuing to thrive and . 6 and M5. USGS: Sunday's Quake Was Largest to Impact Bay Area Since 1989 - Half Moon Bay, CA - The agency has dubbed the incident the "South Napa Earthquake. At the nearby city of Napa, ground motion was also unexpectedly high during the 2000 Yountville earthquake (M5. 2 earthquake occurred at 1:36 AM on September 3, 2000 in the mountains 10 miles northwest of the town of Napa, near Yountville, CA. 0 in or near Yountville, California, USA (updated 40 seconds ago) Past 24 hours. 0) earthquakes. Watch Now. The 4 April 2010 El Mayor-Cucapah (Mexico) earthquake was the first complete rupture with both pre- and post-event LiDARYountville Domaine Chandon is a winery located in Napa Valley in the town of Yountville, California. TIMES STAFF WRITERS. m. Pacific Standard Time. 7, struck Santa Rosa about 80 minutes apart. The September 3, 2000 Yountville Earthquake A magnitude (M) 5. 1999 Hector Mine earthquake. Previous regional gravity data defined a basin 2-3 km deep beneath Napa where the 2014 M6. Casualties. It most likely played a minor role in enhancing shaking during this event but may lead to enhanced shaking caused by wave trapping during a larger-magnitude earthquake. Its epicenter was in the hills west of the Napa Valley, three miles west-southwest of the town of Yountville, and nine miles northwest of the city of Napa. 0. 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 Mesozoic. According to the United States Census Bureau, the town has a total area of 1. "The last earthquake in City of Yountville occurred 28 minutes ago: Minor mag. Although seismologists initially thought that the earthquake occurred on the West Napa fault, accurate locations now indicate that the earthquake occurred Map of recent earthquakes in the San Francisco Bay region, just after the September 3, 2000 magnitude 5. (Public domain. Contributed by NC 3 ; Regional Information. Presented is an analytical study of chimneys to assess key factors affecting behavior.