A seismic seiche propagated upriver, and Little Prairie (a village that was on the site of the former Fort San Fernando, near the site of present-day Caruthersville, Missouri) was heavily damaged by soil liquefaction. The future location of Memphis, Tennessee, experienced level IX shaking on the Mercalli intensity scale. It caused only slight damage to man-made structures, mainly because of the sparse population in the epicentral area. December 16, 1811, 8:15 UTC (2:15 am local time): M 7.2–8.2, epicenter in what is now northeast Arkansas.The three earthquakes and their major aftershocks For many tribes in Tecumseh's pan-Indian alliance, it meant that Tecumseh and his brother the Prophet must be supported.
The New Madrid earthquakes were interpreted variously by American Indian tribes, but one consensus was universally accepted: the powerful earthquake had to have meant something. The 1906 San Francisco earthquake, by comparison, was felt moderately over roughly 6,200 sq mi (16,000 km 2). Contemporary accounts have led seismologists to estimate that these stable continental region earthquakes were felt strongly throughout much of the central and eastern United States, across an area of roughly 50,000 square miles (130,000 km 2), and moderately across nearly 3 million km 2 (1 million sq mi). The epicenters of the earthquakes were located in an area that at the time was at the distant western edge of the American frontier, only sparsely settled by European settlers. The earthquakes, as well as the seismic zone of their occurrence, were named for the Mississippi River town of New Madrid, then part of the Louisiana Territory and now within the U.S. They remain the most powerful earthquakes to hit the contiguous United States east of the Rocky Mountains in recorded history. Two additional earthquakes of similar magnitude followed in January and February 1812.
#EARTH QUAKE MAP OF ALABAMA SERIES#
The 1811–1812 New Madrid earthquakes ( / ˈ m æ d r ɪ d/) 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. New Madrid fault and earthquake-prone region considered at high risk today
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