(AP … It was a wakeup call to prepare for the potentially even more devastating shocks that are inevitable in the future. 63 people were killed, 3,757 were reported injured and 12,053 displaced. ​The anniversary of the Loma Prieta earthquake also marks the anniversary of the creation of the Seismic Hazards Zoning Program (SHZP), one of the key programs operated by California Geological Survey (CGS) to aid in preparedness. Damage in San Francisco from the 1989 Loma Prieta earthquake (Oct. 18, 189) Cost of the Loma Prieta earthquake Thanks to the game at Candlestick, commute traffic was exceptionally light. VIDEO: A look back at the hours and days surrounding Loma Prieta Earthquake Hazards Zone Application (EQ Zapp), Highway Corridor Landslide Hazard Assessment, School, Hospital, and Environmental Reviews, EQ Zapp (A-P Fault Zones and Seismic Hazard Zones), Information Warehouse (reports, maps, and data), Center for Engineering Strong Motion Data, "Liquefaction Damage in the Marina District during the 1989 Loma Prieta Eaerthquake", Regulatory Earthquake Hazard Zones - San Francisco Bay Area, Regulatory Earthquake Hazard Zones - Southern Califonia Region. The Loma Prieta earthquake of 1989 left over 63 people dead, injured thousands of others, and caused widespread harm to property and the environment alike. San Francisco earthquake of 1989, also called Loma Prieta earthquake, major earthquake that struck the San Francisco Bay Area, California, U.S., on October 17, 1989, and caused 63 deaths, nearly 3,800 injuries, and an estimated $6 billion in property damage. On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. A total of 1427 damage sites, collected from more than 30 sources, are concentrated in four zones, three of which are near previously mapped faults. They describe human behavior during and immediately after the... Professional Paper 1551 describes the effects at the land surface caused by the Loma Prieta earthquake. In the week following Loma Prieta, 20 aftershocks magnitude 4.0 or greater and more than 300 of magnitude 2.5 or greater were recorded. The epicenter was located approximately 14.5 km (9 mi) northeast of Santa Cruz and 96.6 km (60 mi) south-southeast of San Francisco, near Loma Prieta Peak in the Santa Cruz Mountains. 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. Lloyd Cluff/Corbis via Getty Images Show More Show Less 7 of 78 Workers check the damage to … The Bay Bridge was unusable for a month. Magnitude is a measure of an earthquake's size, but rather than being a dire​ct measure of the level of ground shaking, it is a measurement of the strength of the seismic sound waves given off by the earthquake. Total damage and loss costs due to the earthquake were estimated to be $6 billion. It was a tragic reminder of the destructive power of earthquakes. Brocher, T.M., Gefeke, K., Boatwright, J., and Knudsen, K.L., 2018, Reported investments in earthquake mitigation top \$73 to \$80 billion in the San Francisco Bay Area, California, since the 1989 Loma Prieta earthquake: U.S. Geological Survey Open-File Report 2018–1168, 18 p., https://doi.org/10.3133/ofr20181168. Several 5.0-plus seismic events in the two years preceding Loma Prieta also served as warnings. Ground Shaking AnimationsTo better understand the distribution of shaking from past and anticipated future earthquakes, seismologists have constructed computer models of earthquakes and the resulting ground shaking. Losses to these systems totaled approximated $5.9 billion. Damage to pavement and near-surface utility pipes caused by the 17 October 1989 Loma Prieta earthquake provides evidence for ground deformation in a 663 km 2 area near the southwest margin of the Santa Clara Valley, California (USA). Scientists deployed an analog system to notify first responders of impending earthquake activity as they worked on rescue efforts at the Cypress Viaduct collapse in Oakland, CA. 1989 Loma Prieta Earthquake. In Part 4 (of, On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. The magnitude-6.9 Loma Prieta earthquake struck on Oct. 17, 1989 at 5:04 p.m. One year following Loma Prieta, in direct response to the ground failure caused by the earthquake, the State enacted legislation directing CGS to identify and map areas prone to liquefaction, earthquake-induced landslides and amplified ground shaking. On this day in 1989 the San Francisco Bay Area did a little rocking – and rolling; and a whole lot of quaking. The purpose of this report is to provide a compilation of structural retrofits and replacements of older buildings and infrastructure in the San Francisco Bay Area that have either been completed since 1989 or that are in progress as of October 2018. The aftershock zone stretched 25 miles, from north of Los Gatos near Highway 17 to south of Watsonville near Highway 101. It also aired at the following dates and times: Sunday, October 19, … CGS's Related Maps and Publications. on October 17th. Did You Feel It?Map of shaking intensity based on 15,000+ reports from citizens who experienced the earthquake. Cypress Freeway damage is seen after the Loma Prieta earthquake of 1989. These effects: include the pattern and characteristics of strong ground shaking, liquefaction of both floodplain deposits along the Pajaro and Salinas Rivers in the Monterey Bay region and sandy artificial fills along the margins of San... Below are multimedia items associated with this project. 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. Geologists had forecast a major earthquake in this area based on historical data, especially the lack of a major seismic event along the San Andreas fault since 1906 -- the 8.3 San Francisco earthquake. The earthquake struck at 5:04p.m. Click on a pin on the map to see more information. The most notable damage included the collapse of the elevated Cypress Structure section of Interstate 880 in Oakland, the collapse of a section of roadbed on the Bay Bridge, and extensive damage to downtown Santa Cruz and San Francisco's Marina District. These are their stories. It looks like your browser does not have JavaScript enabled. Across the bay area, the quake was responsible for 62 deaths, and damage estimates neared the 5 … 30 years later, we revisit the earthquake through the eyes of the scientists who experienced it. That particular day … Some significant findings were: Damage to public infrastructure at or below the ground surface (streets, curbs, and water and gas lines) in southwestern Santa Clara Valley, California, associated with the 1989 Loma Prieta earthquake, is used to support the assertion that the series of photointerpreted lineaments are tectonic in origin and related to long-term reverse faulting along the range front of the Santa Cruz Mountains. The San Andreas Fault is the boundary between the North American plate and the Pacific plate. In Part 2 (of. The epicenter was located near Loma Prieta peak in the Santa Cruz Mountains, approximately 14 km (9 mi) northeast of Santa … 1989 Earthquake Reports and PhotographsFrom the Virtual Museum of the City of San Francisco. KPIX CBS SF Bay Area 1,362 views On Oct. 17, 1989, destruction from the Loma Prieta earthquake killed 67 people and injured 3,757. The Loma Prieta, California, Earthquake of October 17, 1989: Performance of the Built Environment; 1998; PP; 1552; Coordinated by Holzer, Thomas L. The Loma Prieta, California, Earthquake of October 17, 1989: Earthquake Occurrence; 1993; PP; 1550; Coordinated by Bakun, William H.; Prescott, William H. The Loma Prieta, California, Earthquake of October 17, 1989: Societal Response; 1993; PP; 1553; Coordinated by Mileti, Dennis S. The Loma Prieta, California, Earthquake of October 17, 1989: Strong Ground Motion and Ground Failure; 1992; PP; 1551; Coordinated by Holzer, Thomas L. Geographic Names Information System (GNIS), Mapping, Remote Sensing, and Geospatial Data. This video documents scenes of the October 17, 1989 Loma Prieta Earthquake and its aftermath. It was an awakening for seismologists to be more aware of these natural disasters due to the fact that it was the largest earthquake in the San Francisco Bay Area since 1906. In Part 3 (of, On October 17, 1989, at 5:04 pm a magnitude M6.9 earthquake struck near Loma Prieta, California. ​Revisiting the 1989 Loma Prieta earthquake serves as an important reminder to all residents of California that the geologic processes responsible for creating the beautiful natural landscape we enjoy can sometimes occur suddenly and violently so it’s important to be prepared. However, it was also a watershed moment in seismic research. Many other communities sustained severe damage throughout the region located in Alameda, San Mateo, Santa Clara, San Benito, Santa Cruz and Montereycounties. This CD-ROM contains 103 digitized color 35-mm images from Open-File Report 90-547 (Nakata and others, 1990). These are their stories. USGS Professional Papers on Loma Prieta Summaries: Four Loma Prieta Earthquake Professional Papers, each containing multiple chapters, document the magnitude 6.9 earthquake that shook the San Francisco and Monterey Bay regions. The purpose of the SHZP is to minimize loss of life and property through the identification, evaluation and mitigation of seismic hazards. And studied it. The shock was centered in The Forest of Nisene Marks State Park approximately 10 mi (16 km) northeast of Santa Cruz on a section of the San Andreas Fault System and was named for the nearby Loma Prieta Peak in the Santa Cruz Mountains. The 1989 Loma Prieta earthquake occurred on October 18, 1989 at 00:04 UTC in the Santa Cruz Mountains of Central California. Death, destruction, and havoc were again visited upon the San Francisco area in 1989. Strong ground shaking for a magnitude 7 quake typically lasts about 15 seconds. "The Loma Prieta earthquake was a … The epicenter was located near Loma Prieta peak in the Santa Cruz Mountains, approximately 14 km (9 mi) northeast of Santa Cruz and 96 km (60 mi) south-southeast of San Francisco. And studied it. Date: October 18, 1989 at 00:04 UTC (October 17, 1989 at 05:04 PM local time) Location: 37.040 -121.877 Depth: 16.79 km Magnitude: 6.9 Mw, 7.1 Ms, 6.7 Ml These are their stories. The shaking lasted 20 seconds. The epicenter was on the San Andreas fault roughly 56 miles south of San Francisco and 10 miles northeast of Santa Cruz, near Mt. There is still a 50 percent chance for one or more magnitude 7.0 earthquakes In the San Francisco Bay Area in the next 30 years, and the probability of a repeat of the 1906 quake is significant. Pounding was present over a wide geographical area including the cities of San Francisco, Oakland, Santa Cruz and Watsonville. 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