Earthquake Information for Granite County, Montana

Granite County, MT has a high earthquake risk, with a total of 4 earthquakes since 1931. The USGS database shows that there is a 32.30% chance of a major earthquake within 50km of Granite County, MT within the next 50 years. The largest earthquake within 30 miles of Granite County, MT was a 4.0 Magnitude in 2000.

Risk Level:
High
Total Number of Earthquakes in Granite County since 1931
4
Probability of A 5.0 Earthquake within next 50 years
32.30%

Earthquake Probability for Granite County, MT

View the probability of a major earthquake within the next 50 years in Granite 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
32.30%
5.1
27.72%
5.2
27.72%
5.2
23.68%
5.3
20.15%
5.4
17.09%
5.5
14.45%
5.6
12.19%
5.7
10.27%
5.8
8.64%
5.9
7.26%
6.0
6.10%
6.1
5.01%
6.2
4.09%
6.3
3.31%
6.4
2.66%
6.5
2.06%
6.6
1.54%
6.7
1.08%
6.8
0.67%
6.9
0.32%
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%