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
Cities at Risk
2
Risk Assessment
25-40% chance of M6.0+ in next 50 years
Last Major Earthquake
M7.5 — New Madrid, Missouri (1812-02-07)
Affected Countries
Cities Near This Fault
Data: USGS Earthquake Hazards Program