Earthquake Information for Helena West Side, Montana

Helena West Side, MT has a high earthquake risk, with a total of 413 earthquakes since 1931. The USGS database shows that there is a 49.06% chance of a major earthquake within 50km of Helena West Side, MT within the next 50 years. The largest earthquake within 30 miles of Helena West Side, MT was a 4.5 Magnitude in 2017.

Risk Level:
High

Total Number of Earthquakes in Helena West Side since 1931 within 30 miles

413

Probability of A 5.0 Earthquake within next 50 years

49.06%

Most Recent
Largest

4/25/2024 - 1.2 mag, 3.3mi depth 10.2302 mi from Avon, MT
4/15/2024 - 1.0 mag, 9.7mi depth 8.34947 mi from Lincoln, MT
4/8/2024 - 1.7 mag, 6.7mi depth 8.56842 mi from Lincoln, MT
3/29/2024 - 0.9 mag, 12.2mi depth 9.44212 mi from Lincoln, MT
2/29/2024 - 1.5 mag, 13.4mi depth 8.45206 mi from Lincoln, MT
1/30/2024 - 1.2 mag, 12.0mi depth 8.40588 mi from Lincoln, MT
1/26/2024 - 0.4 mag, 10.4mi depth 3.86656 mi from Marysville, MT
1/5/2024 - 1.3 mag, 0.1mi depth 10.0725 mi from Avon, MT
10/10/2023 - 0.9 mag, -2.0mi depth 0.9172 mi from South Hills, MT
8/3/2023 - 1.4 mag, 10.5mi depth 7.34335 mi from Lincoln, MT
6/12/2023 - 0.8 mag, 11.8mi depth 8.48628 mi from Lincoln, MT
7/1/2022 - 1.2 mag, 15.0mi depth 8.58341 mi from Lincoln, MT
6/28/2022 - 0.4 mag, 10.2mi depth 7.71068 mi from Lincoln, MT
5/26/2022 - 0.2 mag, 8.4mi depth 2.98304 mi from Marysville, MT
4/25/2022 - 0.6 mag, 10.6mi depth 8.02356 mi from Lincoln, MT
4/8/2022 - 1.9 mag, 10.1mi depth 7.8045 mi from Lincoln, MT
2/27/2022 - 1.3 mag, 12.4mi depth 8.29548 mi from Lincoln, MT
12/15/2021 - 1.0 mag, 11.8mi depth 8.14799 mi from Lincoln, MT
10/8/2021 - 1.2 mag, 13.5mi depth 8.32927 mi from Lincoln, MT
10/6/2021 - 1.2 mag, 6.0mi depth 3.50547 mi from Elkhorn, MT
10/5/2021 - 1.2 mag, 10.3mi depth 8.99339 mi from Lincoln, MT
10/4/2021 - 1.5 mag, 12.8mi depth 9.33794 mi from Lincoln, MT
9/13/2021 - 1.1 mag, 10.5mi depth 8.75575 mi from Lincoln, MT
9/2/2021 - 1.6 mag, 16.2mi depth 8.35774 mi from Lincoln, MT
8/30/2021 - 0.6 mag, 12.8mi depth 8.70041 mi from Lincoln, MT
8/28/2021 - 2.9 mag, 5.4mi depth 6.59797 mi from Winston, MT
8/13/2021 - 2.5 mag, 13.7mi depth 8.10692 mi from Lincoln, MT
8/10/2021 - 1.6 mag, 13.7mi depth 9.24392 mi from Lincoln, MT
8/3/2021 - -0.5 mag, 7.1mi depth 7.9973 mi from Lincoln, MT
7/6/2021 - 1.7 mag, 12.1mi depth 9.8412 mi from Marysville, MT
6/26/2021 - 1.4 mag, 11.6mi depth 8.29219 mi from Lincoln, MT
6/9/2021 - 0.5 mag, 15.3mi depth 8.49649 mi from Lincoln, MT
6/3/2021 - 1.5 mag, -2.0mi depth 4.34361 mi from The Silos, MT
5/24/2021 - 2.6 mag, 1.7mi depth 3.61691 mi from Avon, MT
5/18/2021 - 3.0 mag, 10.0mi depth 9.06005 mi from Lincoln, MT
5/13/2021 - 0.5 mag, 2.5mi depth 9.97642 mi from Lincoln, MT
5/8/2021 - 1.8 mag, 3.6mi depth 14.3907 mi from Craig, MT
5/3/2021 - 1.0 mag, 10.8mi depth 9.20866 mi from Lincoln, MT
3/24/2021 - 3.1 mag, 4.8mi depth 9.41534 mi from Marysville, MT
3/23/2021 - 0.9 mag, 10.1mi depth 7.83018 mi from Lincoln, MT
3/22/2021 - 1.2 mag, 11.8mi depth 7.82358 mi from Lincoln, MT
3/21/2021 - 1.2 mag, 12.2mi depth 8.11118 mi from Lincoln, MT
1/27/2021 - 0.1 mag, 12.4mi depth 10.2959 mi from Lincoln, MT
1/26/2021 - 1.0 mag, 12.5mi depth 9.51392 mi from Lincoln, MT
1/26/2021 - 1.1 mag, 4.4mi depth 8.26825 mi from Avon, MT
1/25/2021 - -0.4 mag, 10.5mi depth 10.134 mi from Lincoln, MT
1/17/2021 - 1.1 mag, 13.4mi depth 9.96265 mi from Lincoln, MT
1/13/2021 - 1.4 mag, 10.2mi depth 9.91343 mi from Lincoln, MT
1/6/2021 - 1.4 mag, 1.7mi depth 7.7696 mi from Avon, MT
12/21/2020 - 1.1 mag, 12.7mi depth 9.27984 mi from Lincoln, MT

7/6/2017 - 4.5 mag, 10.9mi depth 7.72615 mi from Lincoln, MT
7/8/2017 - 4.1 mag, 8.9mi depth 7.99211 mi from Lincoln, MT
7/17/2017 - 4.0 mag, 11.6mi depth 8.00199 mi from Lincoln, MT
7/18/1975 - 3.9 mag, 5.0mi depth 3.0031 mi from Helena Valley Northwest, MT
7/6/2017 - 3.9 mag, 10.8mi depth 12.8981 mi from Lincoln, MT
7/6/2017 - 3.9 mag, 9.2mi depth 7.37 mi from Lincoln, MT
4/1/1993 - 3.9 mag, 5.0mi depth 9.413 mi from Lincoln, MT
10/14/2017 - 3.9 mag, 8.9mi depth 8.02102 mi from Lincoln, MT
3/12/2017 - 3.8 mag, 19.6mi depth 14.7881 mi from Deer Lodge, MT
7/6/2017 - 3.8 mag, 11.1mi depth 8.79277 mi from Lincoln, MT
2/13/1976 - 3.8 mag, 1.0mi depth 3.6178 mi from Helena Valley Northwest, MT
9/27/2014 - 3.7 mag, 5.0mi depth 8.50267 mi from Lincoln, MT
1/16/2011 - 3.7 mag, 15.2mi depth 6.4254 mi from Marysville, MT
7/12/2017 - 3.7 mag, 10.6mi depth 8.62198 mi from Lincoln, MT
7/6/2017 - 3.6 mag, 11.1mi depth 7.91978 mi from Lincoln, MT
7/16/1986 - 3.6 mag, 5.0mi depth 4.8037 mi from Jefferson City, MT
7/16/1986 - 3.6 mag, 5.0mi depth 4.9677 mi from Jefferson City, MT
10/24/1986 - 3.5 mag, 3.4mi depth 4.6775 mi from Elkhorn, MT
10/18/1986 - 3.5 mag, 5.0mi depth 3.5808 mi from Elkhorn, MT
7/8/2017 - 3.5 mag, 8.6mi depth 6.90107 mi from Lincoln, MT
3/12/2017 - 3.5 mag, 12.2mi depth 15.9887 mi from Deer Lodge, MT
7/19/1975 - 3.5 mag, 5.0mi depth 3.049 mi from Helena Valley West Central, MT
11/7/2017 - 3.4 mag, 10.8mi depth 7.68832 mi from Lincoln, MT
2/3/2016 - 3.4 mag, 2.0mi depth 4.5893 mi from Clancy, MT
12/27/2017 - 3.4 mag, 10.7mi depth 7.83901 mi from Lincoln, MT
11/26/1982 - 3.4 mag, 5.0mi depth 2.1488 mi from Elkhorn, MT
11/12/1978 - 3.4 mag, 5.0mi depth 6.3352 mi from Garrison, MT
11/22/2017 - 3.4 mag, 8.1mi depth 12.1992 mi from Lincoln, MT
10/3/2015 - 3.4 mag, 4.3mi depth 5.03827 mi from Helena Valley Northwest, MT
1/30/2020 - 3.3 mag, 5.0mi depth 7.29342 mi from Helena Valley Northwest, MT
11/9/1986 - 3.3 mag, 5.0mi depth 1.7875 mi from Boulder, MT
7/10/2017 - 3.3 mag, 9.2mi depth 8.75002 mi from Lincoln, MT
10/19/1986 - 3.3 mag, 5.0mi depth 3.3258 mi from Elkhorn, MT
7/13/2017 - 3.3 mag, 14.1mi depth 8.22924 mi from Lincoln, MT
10/31/1995 - 3.2 mag, 10.6mi depth 8.4466 mi from Marysville, MT
2/25/1989 - 3.2 mag, 5.0mi depth 10.3704 mi from Lincoln, MT
9/13/2017 - 3.2 mag, 10.6mi depth 7.16793 mi from Lincoln, MT
10/18/1986 - 3.2 mag, 5.0mi depth 4.9091 mi from Elkhorn, MT
7/25/2017 - 3.2 mag, 10.0mi depth 7.14328 mi from Lincoln, MT
6/16/1999 - 3.2 mag, 3.9mi depth 9.9691 mi from Craig, MT
7/9/2017 - 3.2 mag, 15.7mi depth 7.80229 mi from Lincoln, MT
9/4/1977 - 3.2 mag, 5.0mi depth 1.4664 mi from Helena West Side, MT
7/6/2008 - 3.1 mag, 12.1mi depth 3.7904 mi from Elkhorn, MT
7/18/1975 - 3.1 mag, 5.0mi depth 3.8013 mi from Helena Valley West Central, MT
10/9/2017 - 3.1 mag, 12.0mi depth 7.71429 mi from Lincoln, MT
12/3/1986 - 3.1 mag, 0.0mi depth 9.1676 mi from Jefferson City, MT
2/3/1993 - 3.1 mag, 23.0mi depth 8.8961 mi from Marysville, MT
3/24/2021 - 3.1 mag, 4.8mi depth 9.41534 mi from Marysville, MT
3/8/1991 - 3.1 mag, 5.0mi depth 9.4559 mi from Avon, MT
12/6/2015 - 3.1 mag, 3.0mi depth 5.44792 mi from Clancy, MT

View All

Earthquake Probability for Helena West Side, MT

View the probability of a major earthquake within the next 50 years in Helena West Side, MT.

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2

(within 31 km/51 miles above magnitude)

5.0

49.06%

5.1

43.07%

5.2

43.07%

5.2

37.56%

5.3

32.56%

5.4

28.11%

5.5

24.18%

5.6

20.75%

5.7

17.77%

5.8

15.22%

5.9

13.03%

6.0

11.17%

6.1

9.37%

6.2

7.85%

6.3

6.52%

6.4

5.39%

6.5

4.38%

6.6

3.30%

6.7

2.37%

6.8

1.50%

6.9

0.72%

7.0

0.11%

7.1

0.04%

7.2

0.01%

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%

Earthquake Count for Helena West Side, MT

View the number of earthquake incidents in Helena West Side, MT by year that are more than 2.5 Magnitude.

List of Earthquake Incidents for Helena West Side, MT

Total Number of Earthquakes in Helena West Side, MT within 30 miles. All distances and depths in the table are measured in miles.

04/25/2024

1.2

3.3

10.23

Earthquake Information for Helena West Side, Montana

Earthquake Probability for Helena West Side, MT

Probability of Earthquakes Within the Next 50 Years For Magnitudes Between 5.0 and 9.2

Earthquake Count for Helena West Side, MT

List of Earthquake Incidents for Helena West Side, MT

Risk Of Natural Disasters In Helena West Side, MT

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