The western part of the State was shaken strongly by the New Madrid, Mo., earthquakes of 1811-12 and by earthquakes in 1843 and 1895. The area has also experienced minor shocks. Additional activity has occurred in the eastern part of the State, near the North Carolina border. Forty shocks of intensity V (Modified Mercalli scale) or greater have been cataloged as occurring within the State. Many other earthquakes centered in bordering States have affected points in Tennessee. The following summary covers only hose shocks of intensity VI or greater.