Earthquake Information for Castro Valley, California

Castro Valley, CA has a very high earthquake risk, with a total of 6,711 earthquakes since 1931. The USGS database shows that there is a 99.51% chance of a major earthquake within 50km of Castro Valley, CA within the next 50 years. The largest earthquake within 30 miles of Castro Valley, CA was a 5.6 Magnitude in 1980.

Risk Level:
Very High
Total Number of Earthquakes in Castro Valley since 1931 within 30 miles
6,711
Probability of A 5.0 Earthquake within next 50 years
99.51%

Earthquake Probability for Castro Valley, CA

View the probability of a major earthquake within the next 50 years in Castro Valley, 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
99.51%
5.1
99.15%
5.2
99.15%
5.2
98.66%
5.3
98.04%
5.4
97.31%
5.5
96.49%
5.6
95.64%
5.7
94.76%
5.8
93.91%
5.9
93.09%
6.0
92.11%
6.1
90.75%
6.2
88.63%
6.3
85.76%
6.4
81.60%
6.5
75.77%
6.6
68.23%
6.7
60.50%
6.8
52.39%
6.9
45.03%
7.0
38.28%
7.1
34.09%
7.2
31.37%
7.3
28.63%
7.4
25.42%
7.5
20.93%
7.6
17.43%
7.7
14.08%
7.8
10.66%
7.9
7.03%
8.0
3.86%
8.1
2.43%
8.2
0.66%
8.3
0.32%
8.4
0.00%
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%