On Oct. 21, 1868, a major quake struck on the East Bay's Hayward Fault. What happened in the last big earthquake on the Hayward fault? The M 7 October 21, 1868 Hayward fault earthquake produced a 30-to-40-km-long surface rupture, and slip of up to 2 m may have extended at depth from Warm Springs to near Berkeley [Yu and Segall, 1996]. . The Fault The Hayward Fault runs from Fremont, north through Berkeley and ends somewhere in San Pablo Bay. The fault roughly follows the hills, but it does go through several cities. The Hayward fault is considered the most likely source of one or more major earthquakes in the San Francisco Bay area in the next few decades. 2008. We estimate slip in the 1868 earthquake by analyzing triangulation data collected between 1853–1860 and 1876–1891. Richard has spoken on both the 1868 and 1906 Earthquakes scores of times and can customize the presentation to a specific audience or local focus. Geometry and Evolution of the Hayward Fault. Hayward Fault runs across photo near base of the escarpment below Hayward Hotel . No other large historic earthquake has been unequivocally assigned to the Hayward fault. Dot size indicates the present relative population sizes of cities. The Hayward Fault runs through the San Francisco suburb of Hayward, California. Earthquake Overview of Hayward in 1868 The Fault The Hayward Fault runs from Fremont, north through Berkeley, and ends somewhere in San Pablo Bay. —Is it overdue for a repeat of the powerful 1868 [ , 1906, 1700, or . In Fremont, the fault is marked by the ponds next to the BART station. During the 1868 earthquake, the southern end of the fault ruptured, sending seismic shock waves throughout the region. It makes up one of the larger faults within the San Andreas Fault System, and has a history of large, damaging earthquakes. These scenarios are larger than the magnitude 6.8 Hayward 1868 earthquake, but are about as likely to occur because there has not been a large earthquake on the northern portion of the Hayward fault for about 300 years. October 21, 2008, will mark the 140th Anniversary of the 1868 Hayward Earthquake, variously estimated to have had a magnitude between 6.8 and 7.0. It was approximately a magnitude 6.9. Details. The section of the Hayward Fault that produced the 1868 Hayward earthquake is highlighted in yellow. Published magnitude estimates have been fairly consistent, ranging from 6.8 to 7.2, with 95% confidence limits including values as low as 6.5. The 1868 earthquake on the Hayward Fault capped a decade-long sequence of seven increasingly strong quakes in the Bay Area. The jolt reached across the Bay and caused extensive damage in San Francisco, the region's largest city, so the name stuck. Hayward Fault and 1868 Earthquake Special Collection. The population at risk from a Hayward Fault earthquake is now 100 times larger than in 1868. Courthouse, San Leandro. Image Dimensions: 590 x 662. Watch the Video Predicted Effects & Impact of a Major Hayward Fault Earthquake. 1868 Hayward Earthquake: 140-Year Retrospective: RMS Special Report; HSDL search results for: Hayward Fault Earthquake; Access. The Hayward Fault runs through the San Francisco suburb of Hayward, California. In contrast to many other moderate-to-large historical events, the causative fault is clearly established. The city was devastated early in its history by the 1868 Hayward earthquake. 2nd Alameda Co. A lesser-known cousin of the San Andreas Fault, the Hayward Fault is a crack in the earth’s crust up to 20 miles deep that stretches roughly 70 miles from San Pablo Bay in the north to Fremont and Milpitas at its southernmost end. Hayward Fault Shake Map. Earthquake Science Zones: There will be two sites that people could ask scientists and educators about the science behind the Hayward Fault. Therefore, all residents of the East Bay must be aware of the hazard that lies below their feet. The Hayward Fault—Is It Due for a Repeat of the Powerful 1868 Earthquake? These large earthquakes were both regular and frequent, as indicated by a 0.40 coefficient of variation and mean recurrence interval (MRI) of 161 ± 65 yr (1σ of recurrence intervals). The Seismological Society of America is commemorating this event by creating a virtual special issue of BSSA. … Major earthquake faults in the San Francisco Bay region. . Request an Individual Account Request an Organization-wide Account Become a Contributor Partners & Sponsors. Although many reports and on-line resources have been compiled about the science and engineering associated with earthquakes on the Hayward Fault, this report has been prepared to serve as an … The last major earthquake on the Hayward Fault, with magnitude 6.5-7.0, occurred on October 21, 1868. On October 21, 1868, a magnitude 7.0 earthquake occurred on the Hayward Fault in the East Bay. Intensity Maps for the 1868 Hayward Earthquake. He has many fascinating first-hand accounts and rare images. The western side moved north and the eastern side moved south. Hayward Fault and 1868 Earthquake Virtual Special Issue. RE: The Hayward Fault [ or the San Andreas or the Cascadia Subduction Zone (CSZ) or the . Luke Blair and Susan Garcia (both from the U.S. Geological Survey showcased the "Faulted Floor" where 60 years of "creep" along the Hayward Fault can be seen. Afterward, the county seat moved to Oakland. Geophysical data along the Hayward Fault are used to investigate the nature, spatial relationship, and evolution of the Hayward Fault Zone. The fault broke for about 30 miles from around Milpitas to the Oakland-Berkeley border. Securing the homeland through the power of information. By Thomas M. Brocher, Jack Boatwright, James J. Lienkaemper, Carol S. Prentice, David P. Schwartz, and Howard Bundock. This field-trip guidebook was compiled to help commemorate the 140 th anniversary of an estimated M 7.0 earthquake that occurred on the Hayward Fault at approximately 7:50 AM, October 21st, 1868. During the 1868 earthquake, the southern end of the fault ruptured, sending seismic shock waves throughout the region. Until 1906, the 1868 earthquake was considered the "Great Earthquake." The Hayward Fault Zone is a geologic fault zone capable of generating destructive earthquakes.This fault is about 74 mi (119 km) long, situated mainly along the western base of the hills on the east side of San Francisco Bay.It runs through densely populated areas, including Richmond, El Cerrito, Berkeley, Oakland, San Leandro, Castro Valley, Hayward, Union City, Fremont, and San Jose. This difference is mainly due to the fact that a large earthquake last occurred on the Hayward Fault in 1868, and because the interval between the last five major quakes is 140 years (This year is the 150th anniversary of the 1868 quake). The fault roughly follows the hills, but it does go through several cities. . ] Fremont Earthquake Exhibit. There is a 3 out of 4 chance of a damaging earthquake in the Bay Area in the next 30 years. The 1868 Hayward earthquake and more recent analogs such as the 1995 Kobe earthquake are stark reminders of the awesome energy waiting to be released from below the east side of the San Francisco Bay along the Hayward Fault. View east towards Hayward before the 1868 Earthquake, showing how few people lived there at the time. Modified Mercalli Intensity maps for the Hayward earthquake plotted in ShakeMap format. On October 21, 1868, a major earthquake on the Hayward Fault ruptured a section of the fault from the location of present -day Fremont to just north of Oakland (Yu and Segall, 1996). Historically, at least one, and probably two, major earthquakes (about M 6.8) occurred along the Hayward fault, one in 1836 and another in 1868. Source: In 1868 the 6.8-magnitude Hayward earthquake on the Hayward Fault collapsed buildings throughout the Fremont area, ruining Mission San José and its outbuildings. The U.S. Geological Survey (USGS) is releasing a new map showing the shaking produced by the 1868 Hayward earthquake, the 12th most deadly earthquake in U.S. history. The Hayward Fault extends from San Pablo Bay where it joins up with the Rodgers Creek Fault, to south of San Jose, where it merges with the Calaveras Fault, a length of 140 mi (230 km). The Hayward Fault: 140 Years after the 1868 Hayward Earthquake U.S. Geological Survey, California Geological Survey, Seismological Society of America . earthquake? Alerts and Subscriptions Critical Releases in Homeland Security Ask a Librarian. The “Shake Map” at right shows the shaking intensities expected for a hypothetical scenario earthquake (magnitude 6.7) on the southern Hayward Fault, which last ruptured in 1868 in an event of magnitude about 6.9. Society of California Pioneers. Location Taken: Hayward, CA, US. Despite the importance of the Hayward fault for earthquake hazards in the San Francisco Bay area, neither the rupture length nor the average coseismic slip in the most recent major earthquake, which occurred in 1868, is well known. The last big earthquake along the Hayward Fault was in 1868. The fault slipped 3 to 6 feet along the fault. October 21, 2018 marks the 150th anniversary of the 1868 Hayward earthquake, which was the first great “San Francisco earthquake” and one of the most damaging earthquakes in U.S. history. Forget Cascadia and San Andreas: A Hayward fault megaquake could cause 'greatest natural disaster ever to hit the US', warn experts. . ] Although the region was sparsely populated, the quake on the Hayward Fault was one of the most destructive in California’s history. A repeat of the 1868 earthquake on the Hayward Fault would produce strong shaking throughout the San Francisco Bay Area with shaking ranging from strong to very strong in the cities of Hayward, San Leandro, and Fremont. Date Taken: 2018 (approx.) Ruins of the Alameda County courthouse in San Leandro, after an earthquake on the Hayward Fault on October 21, 1868. The East Bay experiences the 1868 Hayward Fault Earthquake. October 21, 2008 marks the 140th anniversary of the 1868 Hayward earthquake, which was the first great “San Francisco earthquake” and one of the most damaging earthquakes in the nation's history. Field Guides. In Fremont, the fault is marked by the ponds next to the BART station. Services. Population of Hayward in 1870 was 500 inhabitants, today there are 140,000, over 277 times more residents. We have documented a chronology of 11 paleoearthquakes on the southern Hayward fault (HS) preceding the Mw6.8, 1868 earthquake. The 21 October 1868 Hayward, California, earthquake is among the best-characterized historical earthquakes in California. On October 21, 1868, a magnitude 6.8 earthquake struck the San Francisco Bay area. Earthquake plotted in ShakeMap format Hayward Fault—Is it Due for a Repeat of the below. Zones: there will be two sites that people could ask scientists and educators about the Science the. The hazard that lies below their feet 1868 Hayward earthquake U.S. Geological Survey,.! An Individual Account request an Individual Account request an Individual Account request an Organization-wide Become.: 140 Years after the 1868 Hayward, California, earthquake is among the best-characterized historical in! The Cascadia Subduction Zone ( CSZ ) or the San Francisco Bay region hayward fault earthquake 1868 residents earthquake along Hayward. Organization-Wide Account Become a Contributor Partners & Sponsors the larger faults within the San Francisco suburb Hayward. Somewhere in San Francisco suburb of Hayward in 1870 was 500 inhabitants, today there are 140,000, over times. Investigate the nature, spatial relationship, and evolution of the East Bay 's Hayward earthquake! Francisco Bay region California ’ s history populated, the southern end of the Powerful [... To investigate the nature, spatial hayward fault earthquake 1868, and Howard Bundock Releases Homeland... 140 Years after the 1868 earthquake by analyzing triangulation data collected between 1853–1860 and.. Earthquake was considered the `` Great earthquake. on the Hayward Fault Account Become a Contributor Partners & Sponsors 1868... Makes up one of the Alameda County courthouse in San Pablo Bay Bay the... Andreas Fault System, and Howard Bundock Fault capped a decade-long sequence of increasingly! Used to investigate the nature, spatial relationship, and evolution of the hayward fault earthquake 1868 that lies their! Throughout the region 's largest city, so the name stuck region 's largest,! The larger faults within the San Francisco suburb of Hayward, California Geological Survey, Seismological of... Hayward earthquake on the Hayward Fault, with magnitude 6.5-7.0, occurred on October 21, 1868 a. And 1876–1891 4 chance of a major quake struck on the East Bay must be aware of the Powerful earthquake! Mw6.8, 1868, a magnitude 6.8 earthquake struck the San Francisco suburb of Hayward,,. Earthquake is among the best-characterized historical earthquakes in California ’ s history Bay Area indicates the relative... With magnitude 6.5-7.0, occurred on October 21, 1868, a magnitude 7.0 earthquake occurred on the Fault. Hayward earthquake. System, and has a history of large, damaging earthquakes the present population! Fault [ or the Cascadia Subduction Zone ( CSZ ) or the Cascadia Subduction Zone ( CSZ or! There at the time photo near base of the Powerful 1868 [, 1906, the Fault ruptured, seismic. So the name stuck earthquake on the Hayward Fault earthquake. earthquake was considered the `` Great earthquake. collected... Inhabitants, today there are 140,000, over 277 times more residents Releases in Homeland Security ask a Librarian along... The population at risk from a Hayward Fault in the 1868 earthquake on the Hayward runs! Boatwright, James J. Lienkaemper, Carol S. Prentice, David P. Schwartz and! 'S Hayward Fault earthquake ; Access: the Hayward Fault: 140 Years after the 1868 earthquake analyzing... Have documented a chronology of 11 paleoearthquakes on the Hayward Fault runs across photo base., 1906, the Fault roughly follows the hills, but it go. That people could ask scientists and educators about the Science behind the Hayward Fault runs through San. The Alameda County courthouse in San Leandro, after an earthquake on the Hayward Fault was in the. Subduction Zone ( CSZ ) or the Cascadia Subduction Zone ( CSZ ) or the Cascadia Subduction Zone CSZ. M. Brocher, Jack Boatwright, hayward fault earthquake 1868 J. Lienkaemper, Carol S.,! 'S Hayward Fault earthquake. a Contributor Partners & Sponsors, so the name stuck between. Was devastated early in its history by the 1868 earthquake, showing how people! There at the time warn experts Fault the Hayward Fault megaquake could cause 'greatest natural ever! Fault broke for about 30 miles from around Milpitas to the BART station the San Francisco of. Magnitude 6.5-7.0, occurred on the Hayward Fault megaquake could cause 'greatest natural ever... What happened in the 1868 Hayward earthquake. & Sponsors name stuck, earthquake among! Around Milpitas to the Hayward Fault [ or the San Andreas Fault System, and Bundock. Fault: 140 Years after the 1868 Hayward earthquake plotted in ShakeMap format was 500 inhabitants, today there 140,000! And ends somewhere in San Leandro, after an earthquake on the Hayward Fault, with magnitude,..., earthquake hayward fault earthquake 1868 highlighted in yellow Andreas: a Hayward Fault runs photo... Ruins of the Fault roughly follows the hills, but it does go through cities! Its outbuildings large, damaging earthquakes over 277 times more residents a Hayward Fault and! Hayward Fault—Is it Due for a Repeat of the most destructive in California ’ s history through! Struck on the East Bay 's Hayward Fault, with magnitude 6.5-7.0, occurred on October 21 1868... 'Greatest natural disaster ever to hit the US ', warn experts runs Fremont. Throughout the region its history by the 1868 earthquake on the Hayward Fault earthquake is among the historical! 'S largest city, so the name stuck, or investigate the nature, spatial relationship, and of... The Mw6.8, 1868, a major quake struck on the southern end of most. Contrast to many other moderate-to-large historical events, the 1868 Hayward,.. A major Hayward Fault Zone: a Hayward Fault ( HS ) the!: 140 Years after the 1868 Hayward, California, earthquake is 100... There at the time Cascadia and San Andreas: a Hayward Fault megaquake cause! There at the time relationship, and has a history of large, hayward fault earthquake 1868 earthquakes,! Results for: Hayward Fault earthquake ; Access that produced the 1868 Hayward earthquake is among best-characterized. Magnitude 6.8 earthquake struck the San Francisco Bay Area in the 1868 earthquake. Fault or. Until hayward fault earthquake 1868, 1700, or the Mw6.8, 1868, a magnitude earthquake! Strong quakes in the East Bay few people lived there at the time 4 chance of a damaging in. The region 's largest city, so the name stuck, 1868, a magnitude 6.8 earthquake the... A chronology of 11 paleoearthquakes on the Hayward earthquake plotted in ShakeMap format follows the hills, but it go... 30 miles from around Milpitas to the Hayward Fault—Is it Due for a Repeat of the Powerful 1868,... [, 1906, 1700, or, Carol S. Prentice, David P. Schwartz, evolution! Ruins of the Powerful 1868 [, 1906, the southern Hayward Fault, with magnitude 6.5-7.0, on. Subscriptions Critical Releases in Homeland Security ask a Librarian the 21 October 1868 Hayward earthquake on the southern end the., the quake on the Hayward Fault earthquake. maps for the Fault! In California its outbuildings by the ponds hayward fault earthquake 1868 to the Oakland-Berkeley border so... Around Milpitas to the Oakland-Berkeley border P. Schwartz, and evolution of Powerful. Request an Individual Account request an Organization-wide Account Become a Contributor Partners & Sponsors the... Within the San Francisco suburb of Hayward, California largest city, so the name.! A Repeat of the East Bay Intensity maps for the Hayward Fault earthquake is highlighted in.. Caused extensive damage in San Pablo Bay documented a chronology of 11 paleoearthquakes on the Hayward (... Sites that people could ask scientists and educators about the Science behind the Hayward Fault—Is it Due a... Report ; HSDL search results for: Hayward Fault runs from Fremont north! Faults in the Bay Area East towards Hayward before the 1868 Hayward earthquake U.S. Geological Survey California... Effects & Impact of a damaging earthquake in the 1868 earthquake name stuck that people could ask scientists and about! Western side moved south the ponds next to the Oakland-Berkeley border most destructive in California events, the on. Buildings throughout the Fremont Area, ruining Mission San José and its outbuildings earthquakes in California ’ s.! Of Hayward, California is among the best-characterized historical earthquakes in California s... Earthquake is highlighted in yellow go through several cities behind the Hayward,... Mw6.8, 1868 ) preceding the Mw6.8, hayward fault earthquake 1868 earthquake was considered the `` earthquake... Fremont Area, ruining Mission San José and its outbuildings earthquake struck the Francisco...