New Madrid Seismic Zone
Coordinates: 36°34′57″N 89°35′17″W / 36.58245°N 89.58801°W
The New Madrid Seismic Zone (pronounced /nuː ˈmædrɪd/), 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.
The New Madrid fault system was responsible for the 1811–12 New Madrid earthquakes and may have the potential to produce large earthquakes in the future. Since 1812, frequent smaller earthquakes have been recorded in the area.
Earthquakes that occur in the New Madrid Seismic Zone potentially threaten parts of eight American states: Illinois, Indiana, Missouri, Arkansas, Kentucky, Tennessee, Oklahoma and Mississippi.
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