Alton Township, IL has a low earthquake risk, with a total of 5 earthquakes since 1931. The USGS database shows that there is a 1.29% chance of a major earthquake within 50km of Alton Township, IL within the next 50 years. The largest earthquake within 30 miles of Alton Township, IL was a 5.6 Magnitude in 1974.
View the probability of a major earthquake within the next 50 years in Alton Township, IL.
View the number of earthquake incidents in Alton Township, IL by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Alton Township, IL within 30 miles. All distances and depths in the table are measured in miles.