Earthquake Information for Sanders County, Montana

Sanders County, MT has a high earthquake risk, with a total of 10 earthquakes since 1931. The USGS database shows that there is a 48.98% chance of a major earthquake within 50km of Sanders County, MT within the next 50 years. The largest earthquake within 30 miles of Sanders County, MT was a 4.7 Magnitude in 1998.

Risk Level:
High
Total Number of Earthquakes in Sanders County since 1931
10
Probability of A 5.0 Earthquake within next 50 years
48.98%

Earthquake Probability for Sanders County, MT

View the probability of a major earthquake within the next 50 years in Sanders County, MT.

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
48.98%
5.1
43.07%
5.2
43.07%
5.2
37.64%
5.3
32.73%
5.4
28.36%
5.5
24.50%
5.6
21.14%
5.7
18.22%
5.8
15.72%
5.9
13.58%
6.0
11.73%
6.1
9.65%
6.2
7.70%
6.3
5.94%
6.4
4.53%
6.5
3.45%
6.6
2.59%
6.7
1.83%
6.8
1.14%
6.9
0.53%
7.0
0.00%
7.1
0.00%
7.2
0.00%
7.3
0.00%
7.4
0.00%
7.5
0.00%
7.6
0.00%
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%