Epicenter at 38.34, -89.79 St. Louis area urban seismic hazard map for 1.0 second period ground shaking. at 07:58 June 29, 1984 UTC, Location: While towns in the Bootheel often do not have tall structures to be damaged by shaking, there are communities that have large open structures and unreinforced masonry (URM) buildings which are likely to be impacted. Epicenter at 38.77, -89.57 7.2 km from

Approximately 5,500 square miles or about 3.5 million acres of the Mississippi and Ohio river valleys were impacted by landslides, fissures, sandblows, lateral spreads, subsidence, submergence and uplift. Epicenter at 37.165, -89.577 Every year hundreds of small earthquakes occur in the NMSZ, however most are too small to be felt by humans and can only be detected by sensitive instruments. In places like California, where rocks are at or near the ground surface, faults are much easier to study because they can be readily measured and analyzed.
Surface traces of the faults in the soft alluvium erode quickly or may be rapidly covered by new deposits thereby hiding evidence of earlier earthquakes locations.

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Highland Epicenter at 38.868, -89.219 Perryville Missouri Geological Survey (11.2 miles), 1992-04-30 00:01:30 UTC The Bootheel area is predominantly rural with scattered, small to medium size towns. According to the Federal Emergency Management Agency (FEMA) and the QuakeSmart program, small businesses account for more than 99 percent of all companies in the United States, they employ 50 percent of all private sector workers, and provide nearly 45 percent of the nation’s payroll. The measured locations of microseismic earthquakes indicate trends that scientist have used to identify active faults.

The New Madrid Seismic Zone (/ ˈ m æ d r ɪ d /), sometimes called the New Madrid Fault Line, is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri.. 18.2 km from Crystal City It is estimated that 40 percent of all small businesses will not reopen after a major disaster and of the ones that do open 25 percent of those will close within one year.

In Missouri, the report estimates a direct economic loss of $69 billion dollars and nearly 87,000 damaged buildings. Some scientists believe the probability of a large earthquake (magnitude 7.0 – 8.0) is about 10 percent in 50 years. Epicenter at 37.172, -89.965 Red Bud Brittle Structures like unreinforced Masonry buildings and unreinforced concrete), Complex Structures with odd shapes and lots of corners, Unanchored building contents like bookshelves, file cabinets, storage racks, pipes, fire sprinkler systems, water heaters, mechanical equipment. 1.5 magnitude earthquake 2020-10-12 01:33:33 UTC at 01:33 October 12, 2020 UTC Location: Epicenter at 36.568, -89.617 2.2 km from Lilbourn (1.2 miles) at 05:16 May 15, 1983 UTC, Location: (1.2 miles).

The research team confirmed the seismic activity by densely populating the region with seismographs for a year in order to gather data about low magnitude quakes.

(5.2 miles), 1986-08-26 16:41:24 UTC Epicenter at 38.31, -88.99 Epicenter at 37.7, -88.47

800-361-4827 at 09:02 December 29, 2003 UTC, Location:

Send questions and comments about this story to feedback@stlpublicradio.org. While not as well known for earthquakes as California or Alaska, the New Madrid Seismic Zone (NMSZ), located in southeastern Missouri, northeastern Arkansas, western Tennessee, western Kentucky and southern Illinois, is the most active seismic area in the United States, east of the Rocky Mountains. 7.2 km from Pavlis said they can be felt but would only dislodge a few bricks here and there.

In addition to seismic waves, scientists are using several other methods of research to better understand the fault system. Salem Predicted cost of a seismic event in the NMSZ. 573-368-2100 La Center at 07:01 March 02, 1990 UTC, Location: (7.2 miles), 1993-08-27 00:08:34 UTC “This adds another layer, but in the grand scheme of the way they do hazard maps, it doesn’t really change things very much,” he explained. at 06:12 May 01, 2016 UTC, Location: Current knowledge about the faults system within the NMSZ is obtained by studying seismograph recordings of the seismic waves produced by the frequent small earthquakes. Currently, paleoseismologists have found evidence of three or more large earthquakes (magnitude 7.0 or larger) which have occurred in the last 2,000 years. Those earthquakes were felt for hundreds of miles, and produced massive waves on the Mississippi River. (9.2 miles), 1983-05-15 05:16:21 UTC 8.2 km from The faults on which the earthquakes occur are buried beneath 100- to 200-foot thick layers of soft river sediments called alluvium. He was part of the team of geologists from Indiana University, Purdue University, Illinois University, the Indiana Geological Survey and the Illinois Geological Survey who conducted the study. The team is called OIINK after the region they are studying--the Ozarks, Illinois, Indiana, and Kentucky. Genevieve Seismic Zone is unlikely to impact insurance rates. It’s all possible because of donations from people like you.

Advance Due to their infrequency, the recurrence interval of moderate to large earthquakes in the NMSZ is very hard to predict. at 00:38 October 05, 1988 UTC, Location: at 22:56 February 14, 1984 UTC, Location: Some buildings in St. Louis, 150 miles or more to the north, received damage consisting mostly of broken or collapsed stone chimneys and broken stone buildings of Unreinforced Masonry (URM) construction. St. Louis Public Radio is your trusted source for reliable reporting on politics in the St. Louis region, Jefferson City, Rolla, and the Metro East. 7.2 km from Epicenter at 37.37, -89.18

Thick unfertile sand deposited by sandblows and fissures can impact large areas, as fields graded for irrigation will no longer be level, drainage ditches can become blocked, and transport of materials, supplies and crops will be difficult. Location of earthquake epicenters in and near the New Madrid Seismic Zone (circles scaled according to magnitude.). Small to medium sized businesses are often hit the hardest with an estimated daily income loss of $3,000 and $23,000, respectively. 18.2 km from at 08:10 June 07, 2011 UTC, Location: A 2004 HAZUS report, based on a 7.7 earthquake occurring in the New Madrid Seismic Zone, estimates earthquake damages to be $296 billion dollars across the region and nearly 730,000 people displaced from their homes. Coronavirus Pandemic Complicates How People Adjust To Life After Prison, St. Louis Region Has 'One Last Chance' To Curb Coronavirus Before Restrictions Return, Online Series Tackles St. Louis Region’s Struggle With Environmental Racism, Pfizer Says Experimental COVID-19 Vaccine Is More Than 90% Effective, After Napa, Missourians Weigh Costs of Earthquake Insurance, Annual Earthquake Drill Shakes Things Up In Missouri, Illinois, A second earthquake of the day occurs in southeastern Missouri. For Butler, Bollinger, Cape Girardeau, Perry, St. Louis (including the City), Lincoln, Pike, Marion and Lewis Counties the estimates are 0.02 percent to 0.2 percent killed, 0.1 percent to 1 percent seriously injured, 1 percent building collapses and 10 percent with severe structural damage.

(5.2 miles), 1994-02-05 14:55:37 UTC at 14:15 June 09, 1981 UTC, Location: From the approximate locations, ages and magnitudes a long term average recurrence interval can be calculated.
The last strong earthquake (magnitude 6.7) in the NMSZ occurred near Charleston, Missouri on October 31, 1895. The trends indicate a four-segment, zig-zag fault system with a total length of about 125 miles stretching from east central Arkansas northeastward through Missouri, Tennessee Kentucky and into southern Illinois. Geologists have identified a new seismic zone stretching from St. Louis to Cape Girardeau along the Mississippi River called the Ste. Rolla, MO 65402-0250 (10.2 miles), 2002-03-12 08:30:48 UTC Support this work by making a donation today. at 23:48 June 10, 1987 UTC, Location: The last strong earthquake (magnitude 6.7) in the NMSZ occurred near Charleston, Missouri on October 31, 1895. 8.2 km from Subscribe to ad-free EarthquakeTrack Plus for the best earthquake tracking experience plus additional features and subscriber-only perks. 11.2 km from at 14:55 February 05, 1994 UTC, Location: St. Louis, MO » 38° St. Louis, MO » ... GASSVILLE, Ark. For comparison, the New Madrid Seismic Zone is twice as likely to produce a major earthquake as the newly identified Ste. 2016-05-01 06:12:10 UTC

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