New Madrid: Quick Facts

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Map showing the extent of perceived shaking from the New Madrid earthquakes of 1811-1812 in the central United States. Concentric colored zones indicate areas of extreme, violent, severe, very strong, strong, and moderate shaking, radiating outward from the epicenters near New Madrid, Missouri. An inset highlights the epicenter locations along the Mississippi River near New Madrid, with nearby cities such as Memphis and Cairo also marked. Major cities and state boundaries are included for refere

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