Ontario, CA Earthquake Report
Maps of Earthquakes in Ontario, CA
- Most Recent
Ontario, CA Earthquake Probability
The USGS database shows that there is a 99.37% chance of a major earthquake within 50km of Ontario, CA within the next 50 years. The largest earthquake within 30 miles of Ontario, CA was a 5.7 Magnitude in 1990.
Probability of earthquakes within the next 50 years
Within 31 Miles / 50km above magnitude