Earthquake Information for Riverside County, California

Riverside County, CA has a very high earthquake risk, with a total of 1,494 earthquakes since 1931. The USGS database shows that there is a 98.81% chance of a major earthquake within 50km of Riverside County, CA within the next 50 years. The largest earthquake within 30 miles of Riverside County, CA was a 5.5 Magnitude in 1992.

Risk Level:
Very High
Total Number of Earthquakes in Riverside County since 1931
1,494
Probability of A 5.0 Earthquake within next 50 years
98.81%

Earthquake Probability for Riverside County, CA

View the probability of a major earthquake within the next 50 years in Riverside County, CA.

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2
(within 31 km/51 miles above magnitude)
MAGNITUDE
PROBABILITY
5.0
98.81%
5.1
97.76%
5.2
97.76%
5.2
96.22%
5.3
94.16%
5.4
91.61%
5.5
88.66%
5.6
85.43%
5.7
82.05%
5.8
78.65%
5.9
75.34%
6.0
72.19%
6.1
68.92%
6.2
65.91%
6.3
63.10%
6.4
59.91%
6.5
56.75%
6.6
55.01%
6.7
52.89%
6.8
49.63%
6.9
44.77%
7.0
38.96%
7.1
33.63%
7.2
29.55%
7.3
25.16%
7.4
21.18%
7.5
16.67%
7.6
11.79%
7.7
7.60%
7.8
4.56%
7.9
2.61%
8.0
1.16%
8.1
0.48%
8.2
0.19%
8.3
0.06%
8.4
0.01%
8.5
0.00%
8.6
0.00%
8.7
0.00%
8.8
0.00%
8.9
0.00%
9.0
0.00%
9.1
0.00%
9.2
0.00%

California Earthquakes by City