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 …

In the winter of 1811 and 1812, the New Madrid seismic zone generated a sequence of earthquakes that lasted for several months and included three very large earthquakes estimated to be between …

New Madrid earthquakes of 1811–12, series of three large earthquakes that occurred near New Madrid, Missouri, between December 1811 and February 1812. There were thousands of aftershocks, of …

Jan 24, 2025 · Most earthquakes in the Midwest occur in the New Madrid Seismic Zone (NMSZ), which lies in the Mississippi River Valley and spans northeastern Arkansas, southeastern Missouri, western …

Several destructive shocks occurred on February 7, the last of which equaled or surpassed the magnitude of any previous event. The town of New Madrid was destroyed. At St. Louis, many …

This map from the US Geological Survey shows estimated levels of shaking from a hypothetical M7.7 earthquake along the southwestern portion of the New Madrid Seismic Zone.

Nov 28, 2025 · NEW MADRID, Mo. (WSIL) -- A total of 9 earthquakes hit a three county area in a seven-day span. These hit in New Madrid County and Mississippi County in Missouri, along with Lake …

6 days ago · It was supposed to happen on or around Dec. 3, 1990: A massive earthquake along the New Madrid Seismic Zone would bring destruction to the area, including parts of Arkansas. This was …

Between December 16, 1811, and February 7, 1812, seven earthquakes of magnitude 6.0 to 7.5 on the Richter scale and numerous lesser aftershocks ravaged the affected area. They were among the …

Oct 2, 2019 · This sequence of three very large earthquakes is usually referred to as the New Madrid earthquakes, after the Missouri town that was the largest settlement on the Mississippi River …