New Madrid Seismic Zone
intraplate — 240 km
The New Madrid Seismic Zone is the most active seismic zone in central and eastern North America. The 1811-1812 earthquake sequence produced three M7+ events that rang church bells in Boston and temporarily reversed the flow of the Mississippi River.
Type
intraplate
Length
240 km
Countries
1
Linked Cities
3
Last Major Earthquake
M7.5 — New Madrid, Missouri (1812-02-07)
Affected Countries
Cities Near This Fault
General tectonic context only—not a site-specific hazard assessment. Live event data: USGS Earthquake Hazards Program.