Earthquake Information for Rancho Cucamonga, California

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.

Risk Level:
Very High
Total Number of Earthquakes in Rancho Cucamonga since 1931 within 30 miles
17,925
Probability of A 5.0 Earthquake within next 50 years
99.36%

Earthquake Probability for Rancho Cucamonga, CA

View the probability of a major earthquake within the next 50 years in Rancho Cucamonga, 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
99.36%
5.1
98.88%
5.2
98.88%
5.2
98.21%
5.3
97.37%
5.4
96.38%
5.5
95.27%
5.6
94.09%
5.7
92.89%
5.8
91.71%
5.9
90.58%
6.0
89.53%
6.1
88.38%
6.2
87.32%
6.3
86.26%
6.4
84.18%
6.5
79.82%
6.6
75.60%
6.7
71.21%
6.8
67.16%
6.9
63.12%
7.0
59.03%
7.1
54.89%
7.2
50.74%
7.3
45.75%
7.4
40.75%
7.5
34.68%
7.6
27.89%
7.7
20.77%
7.8
14.38%
7.9
9.03%
8.0
4.54%
8.1
1.69%
8.2
0.30%
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%