Earthquake Information for Napa County, California

Napa County, CA has a very high earthquake risk, with a total of 103 earthquakes since 1931. The USGS database shows that there is a 96.20% chance of a major earthquake within 50km of Napa County, CA within the next 50 years. The largest earthquake within 30 miles of Napa County, CA was a 6.0 Magnitude in 2014.

Risk Level:
Very High
Total Number of Earthquakes in Napa County since 1931
103
Probability of A 5.0 Earthquake within next 50 years
96.20%

Earthquake Probability for Napa County, CA

View the probability of a major earthquake within the next 50 years in Napa 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
96.20%
5.1
94.72%
5.2
94.72%
5.2
93.06%
5.3
91.29%
5.4
89.48%
5.5
87.69%
5.6
85.97%
5.7
84.36%
5.8
82.87%
5.9
81.53%
6.0
80.34%
6.1
79.13%
6.2
77.82%
6.3
76.30%
6.4
72.89%
6.5
68.79%
6.6
62.24%
6.7
56.19%
6.8
49.55%
6.9
41.51%
7.0
31.99%
7.1
24.20%
7.2
17.27%
7.3
10.70%
7.4
5.21%
7.5
0.85%
7.6
0.08%
7.7
0.00%
7.8
0.00%
7.9
0.00%
8.0
0.00%
8.1
0.00%
8.2
0.00%
8.3
0.00%
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%