Big Rock, IL has a low earthquake risk, with a total of 4 earthquakes since 1931. The USGS database shows that there is a 1.67% chance of a major earthquake within 50km of Big Rock, IL within the next 50 years. The largest earthquake within 30 miles of Big Rock, IL was a 4.2 Magnitude in 2004.
View the probability of a major earthquake within the next 50 years in Big Rock, IL.
View the number of earthquake incidents in Big Rock, IL by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Big Rock, IL within 30 miles. All distances and depths in the table are measured in miles.