Fort Madison, IA has a very low earthquake risk, with a total of 0 earthquakes since 1931. The USGS database shows that there is a 0.24% chance of a major earthquake within 50km of Fort Madison, IA within the next 50 years.
View the probability of a major earthquake within the next 50 years in Fort Madison, IA.
See Iowa Earthquake Report or Lee County, IA Earthquake Report