Historic Earthquakes

New Madrid Earthquakes 1811-1812

Isoseismal Map

Isoseismal map for the Arkansas earthquake of December 16,1811, 08:15 UTC
(first of the 1811-1812 New Madrid series).

Isoseismal map

Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.