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New Madrid fault and earthquake-prone region considered at high risk today. 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 ...
The New Madrid seismic zone (NMSZ), sometimes called the New Madrid fault line (or fault zone or fault system), 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.
December 16, 1811 1811–1812 New Madrid earthquakes Missouri: 7.6–7.9 December 16, 1811 1811–1812 New Madrid earthquakes Montana: 7.2 August 17, 1959 1959 Hebgen Lake earthquake Nebraska: 7.0 November 15, 1877 [49] Nevada: 7.3 December 16, 1954 1954 Fairview earthquake New Hampshire: 6.5 June 1, 1638 1638 New Hampshire earthquake New ...
What are the New Madrid earthquakes of 1811-1812? The New Madrid earthquakes of 1811 and 1812 were some of the largest earthquakes recorded in U.S. history, according to USGS.
An undated photo from the US Geological Survey depicts a landslide trench and ridge in the Chickasaw Bluffs, east of Reelfoot Lake, Tennessee, resulting from the 1811 to 1812 New Madrid earthquakes.
From Dec. 16, 1811, to Feb. 7, 1812, three major earthquakes violently shook part of the central United States. Trees bent and snapped. Trees bent and snapped. Sand blows erupted.
1811–1812 New Madrid earthquakes: 36.6 −89.6 7.8 M I: USGS February 7, 1812 09:45 New Madrid, Missouri, United States 1811–1812 New Madrid earthquakes: 36.6 −89.6 8 M I (Johnston, 1996) USGS March 26, 1812 16:37 Caracas, La Guaira, El Tocuyo, San Felipe, Barquisimeto, Mérida, La Victoria, Valencia, Venezuela 1812 Caracas earthquake ...
Geologists estimate that similar New Madrid Seismic Zone earthquakes like the ones in 1811 and 1812 have a 7–10% chance of reoccurring within the next 50 years.