Memphis has a dense urban population near faults capable of producing major earthquakes.
A high probability of a moderate earthquake in the near future (e.g., a 25-40% probability of a magnitude 6.0 or greater in the next 50 years), and relatively low regional attenuation (in other words, seismic waves do damage over a greater area in this region than for the same magnitude earthquake in the west). Memphis lies within the New Madrid seismic zone, which is the most seismically active and well-studied region in the Central and Eastern U.S.
Ground Shaking Maps
The Memphis, Shelby County, Tennessee, Seismic Hazard Maps (OFR-2004-1294) - Technical documentation
Urban Seismic Hazard Mapping for Memphis, Shelby County, Tennessee (FS-2005-3142) - Non-technical documentation
Deterministic (scenario) ground shaking maps
Deterministic ground motion maps show different types of motions for a single specific hypothetical earthquake (scenario or magnitude and location).
Probabilistic ground shaking maps
Probabilistic ground motion maps show different types of motions for various probability levels. View these online or download graphic or grid files.