The November 9, 1968 Wabash Valley Zone magnitude 5.5, was the strongest in the central U.S. since the October 31, 1895 New Madrid Zone quake, centered near Charleston, Missouri. Geologists have found liquefaction sites and sand dikes that shows the evidence of prehistoric earthquakes in the region. According to experts at Washington University St. Louis, Wabash Valley seismic activity could pose more of a danger to the St. Louis area. Intersection Closure and Construction by Corrections and Courthouse. More research will be necessary before the extent of the fault system is known, as the faults are located deep beneath 100-200 feet of alluvial soil deposits, and have few features that are visible from the surface. Terms of Use, Privacy Policy, & Disclaimer | CUSEC Fraud & Abuse Policy, Seismic Profiling of Earthquakes in the Wabash Valley Seismic Zone, Terms of Use, Privacy Policy, & Disclaimer. Memphis, TN 38118 According to experts at Washington University St. Louis, Wabash Valley seismic activity could pose more of a danger to the St. Louis area. Some believe the seismic zone is capable of producing "New Madrid-sized" earthquake events. Many of the strongest quakes in recent years have occurred in Wabash Valley. By examining the size of the dikes and sediment found within the sand dikes, geologists are able to estimate the size of the earthquake it took to create the formations. This earthquake was felt in at least 16 states, by more than 40,000 people, according to the USGS. Most of the mapped faults are located in an area that extends from southeastern Illinois into southwestern Indiana and western Kentucky. Although neither has produced a significantly damaging quake in many years, that doesn't mean they aren't capable of doing so. Many of the strongest quakes in recent years have occurred in Wabash Valley. Earthquake activity in the Wabash Seismic Zone has a history of affecting the St. Charles and the St. Louis metropolitan area and its residents. Shaking was felt in 23 states. According to the Indiana Geological Survey, while there was minor damage associated with the earthquake, the tremor was a warning to residents of the Wabash Valley Seismic Zo… Studies continue in order to learn more about seismic activity in the Wabash Valley Zone and throughout the central U.S. Central United States Earthquake Consortium | 2630 E. Holmes Rd. Create an Account - Increase your productivity, customize your experience, and engage in information you care about. For further information on the Wabash Valley Seismic Zone, browse through the links below. Preparedness is the next step. Other Illinois quakes centered closer to the Missouri state line have resulted in reports of cracked foundations, residents thrown from their feet in the metro area, and produced turbulence on the Mississippi River. Map of Illinois April 18 earthquake in relation to the Wabash Valley Fault System This map shows historical earthquakes of Illinois (magnitude 4.5 or greater) from 1804 to 1987.Stover, Carl W., and Coffman, Jerry L. 1992, Seismicity of the United States, 1568-1989 (Revised). Carmel quake. The Wabash Valley Seismic Zone is located in Southeastern Illinois and Southwestern Indiana and it is capable of producing M7.0 earthquakes. Moderate damage was reported in St. Charles and other parts of Missouri. Recent earthquakes have reinforce that the New Madrid Seismic Zone isn’t the only ‘hot spot’ for earthquakes in the central U.S. On June 18, 2002, a M4.6 earthquake struck near Evansville, Indiana with an epicenter between Mt. Vernon, Illinois and the April 18, 2008, 5.4 Mt. Further demonstrating that the earthquake hazard within the region needs to be addressed, a M5.2 earthquake struck near Mt. Since the discovery of this seismic zone, earthquake awareness and preparedness have increased. Evidence of quakes estimated at 7.1 has been found in geological formations. Vernon and West Franklin in Posey County, in an area that is known as the Wabash Valley Seismic Zone. Residents are seeing that moderate sized earthquakes are not just occurring to the south, but occur right at home and can affect Illinois, Indiana, and Kentucky. the Wabash Valley fault in Illinois and Indiana: and the East Tennessee Seismic Zone that runs into Alabama: These are not like the faults in California , which last had a major earthquake in 1994, when the magnitude 6.7 Northridge temblor killed 57 people and caused $20 billion in damages. Current research is still turning out new evidence of historic earthquakes in the zone. Most of the mapped faults are located in an area that extends from southeastern Illinois into … Vernon and West Franklin in Posey County, in an area that is known as the Wabash Valley Seismic Zone. Recent earthquakes have reinforce that the New Madrid Seismic Zone isn’t the only ‘hot spot’ for earthquakes in the central U.S.  On June 18, 2002, a M4.6 earthquake struck near Evansville, Indiana with an epicenter between Mt. The earthquake that produced the site was estimated to be a magnitude 7.1—such an event today would cause widespread damage and disruption within the Wabash Valley Seismic Zone. Northwest of Hovey Lake, the Wabash Island fault comprises several branches in a quasi-planar fault zone that dips about 65° east-southeast. - Increase your productivity, customize your experience, and engage in information you care about. Fortunately, there were no serious injuries or fatalities, but damage was reported in Illinois, Indiana, and Kentucky. Some believe the seismic zone is capable of producing "New Madrid-sized" earthquake events. Less well-known and feared than its famous sibling to the southwest, the Wabash Valley Seismic Zone is considered by some experts to be just as significant to residents of St. Charles County. Carmel, Illinois on April 18, 2008. Over the years, Wabash Valley quakes have produced effects in this region ranging from structural damage to shaking felt from the recent June 18, 2002, 5.0 centered near Mt. Phone: (901) 544-3570 | Fax: (901) 544-0544 | Email: cusec@cusec.org Geologists are able to study land features and project the size of the earthquakes that created them. According to the Indiana Geological Survey, while there was minor damage associated with the earthquake, the tremor was a warning to residents of the Wabash Valley Seismic Zone that earthquakes can, and do, strike close to home. Vertical displacement on the floor fault increases with increasing depth and is about 120 m at the Upper Cambrian Eau Claire Formation. The New Madrid Seismic Zone and the Wabash Valley Seismic Zone are two of the largest fault lines in the Central United States. In the mid-1980’s, geologist Steven Obermeier found a liquefaction formation that was estimated, through carbon dating, to be 6,100 years old. Currently, researchers have found evidence of ongoing quake activity for the last 20,000 years. The important point for St. Charles residents and residents of the rest of Missouri to keep in mind is that knowledge is the first step to saving lives and reducing property damage.

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