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The 1811–1812 New Madrid earthquakes were a series of intense intraplate earthquakes beginning with an initial earthquake of moment magnitude 7.2–8.2 on December 16, 1811, followed by a moment magnitude 7.4 aftershock on the same day. Two additional earthquakes of similar magnitude followed in January and February 1812.
Potosi is a city in Washington County, Missouri, United States. Potosi is seventy-two miles southwest of St. Louis . The population was 2,538 as of the 2020 census .
Earthquakes in the New Madrid and Wabash Valley seismic zones from 1974 to 2002, with magnitudes larger than 2.5. The zone had four of the largest earthquakes in recorded North American history, with moment magnitudes estimated to be as large as 7 or greater, all occurring within a 3-month period between December 1811 and February 1812. Many of ...
About 55 earthquakes a day – 20,000 a year – are recorded by the National Earthquake Information Center. ... 6.1 to 6.9: Serious damage. 7.0 to 7.9: Major earthquake. Serious damage. 8.0 or ...
Locations of quakes magnitude 2.5 or greater in the Wabash Valley (upper right) and New Madrid (lower left) Seismic Zones. The Wabash Valley seismic zone (also known as the Wabash Valley fault system or fault zone) is a tectonic region located in the Midwestern United States, centered on the valley of the lower Wabash River, along the state line between southeastern Illinois and southwestern ...
The Insurance Information Institute reminds homeowners that, similar to earthquakes, damage from landslides is excluded from standard insurance policies. 7 Facts About Earthquakes.