Rancho Cucamonga, CA has a very high earthquake risk, with a total of 17,925 earthquakes since 1931. The USGS database shows that there is a 99.36% chance of a major earthquake within 50km of Rancho Cucamonga, CA within the next 50 years. The largest earthquake within 30 miles of Rancho Cucamonga, CA was a 5.7 Magnitude in 1990.
View the probability of a major earthquake within the next 50 years in Rancho Cucamonga, CA.
View the number of earthquake incidents in Rancho Cucamonga, CA by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Rancho Cucamonga, CA within 30 miles. All distances and depths in the table are measured in miles.