Earthquake Information for Mason County, Washington

Mason County, WA has a very high earthquake risk, with a total of 30 earthquakes since 1931. The USGS database shows that there is a 89.80% chance of a major earthquake within 50km of Mason County, WA within the next 50 years. The largest earthquake within 30 miles of Mason County, WA was a 5.6 Magnitude in 1999.

Risk Level:
Very High

Total Number of Earthquakes in Mason County since 1931

Probability of A 5.0 Earthquake within next 50 years

89.80%

Most Recent
Largest

3/18/2024 - 1.7 mag, -0.2mi depth 5 mi from Shelton, WA
3/7/2024 - 2.6 mag, 40.9mi depth 17 mi from Hoodsport, WA
2/14/2024 - 2.0 mag, 29.2mi depth 0 mi from Belfair, WA
2/5/2024 - 1.6 mag, 12.2mi depth 6 mi from Belfair, WA
2/5/2024 - 1.5 mag, 13.2mi depth 6 mi from Belfair, WA
9/12/2023 - 0.5 mag, 0.1mi depth 21 mi from Hoodsport, WA
5/5/2023 - 1.6 mag, 25.3mi depth 1 mi from Belfair, WA
9/29/2022 - 2.2 mag, 30.9mi depth 5 mi from Grapeview, WA
12/30/2021 - 1.4 mag, 43.7mi depth 14 mi from Hoodsport, WA
9/15/2021 - 1.9 mag, 19.8mi depth 3 mi from Belfair, WA
6/21/2021 - 3.2 mag, 44.3mi depth 2 mi from Skokomish, WA
6/12/2021 - 3.6 mag, 40.3mi depth 1 mi from Skokomish, WA
6/10/2021 - 1.6 mag, -0.2mi depth 8 mi from Shelton, WA
6/6/2021 - 0.7 mag, 21.4mi depth 2 mi from Belfair, WA
3/29/2021 - 1.8 mag, 42.1mi depth 15 mi from Hoodsport, WA
7/5/2020 - 0.5 mag, 6.7mi depth 4 mi from Belfair, WA
5/7/2020 - 1.8 mag, -0.5mi depth 7 mi from Shelton, WA
3/22/2020 - 2.2 mag, 42.4mi depth 19 mi from Shelton, WA
2/4/2020 - 2.0 mag, -0.3mi depth 7 mi from Shelton, WA
1/31/2020 - 1.1 mag, 4.6mi depth 15 mi from Shelton, WA
12/25/2019 - 2.7 mag, 2.2mi depth 9 mi from Shelton, WA
12/8/2019 - 1.6 mag, 20.8mi depth 2 mi from Belfair, WA
10/25/2019 - 1.3 mag, 17.3mi depth 5 mi from Belfair, WA
7/13/2019 - 2.2 mag, 18.6mi depth 3 mi from Belfair, WA
2/14/2019 - 2.8 mag, 40.3mi depth 8 mi from Shelton, WA
10/1/2018 - 0.6 mag, 14.5mi depth 6 mi from Belfair, WA
9/6/2018 - 1.6 mag, -0.3mi depth 7 mi from Shelton, WA
8/31/2018 - 1.2 mag, 24.9mi depth 1 mi from Belfair, WA
7/28/2018 - 2.3 mag, 15.7mi depth 6 mi from Belfair, WA
1/23/2018 - 2.8 mag, 48.3mi depth 5 mi from Belfair, WA
12/10/2017 - 2.7 mag, -0.4mi depth 8 mi from Belfair, WA
12/8/2017 - 2.5 mag, 43.2mi depth 10 mi from Allyn, WA
8/24/2017 - 1.3 mag, 4.7mi depth 5 mi from Belfair, WA
3/13/2017 - 1.5 mag, 38.4mi depth 3 mi from Shelton, WA
2/22/2017 - 1.4 mag, 18.2mi depth 8 mi from Belfair, WA
2/22/2017 - 1.1 mag, 20.1mi depth 8 mi from Belfair, WA
2/22/2017 - 0.3 mag, 17.6mi depth 8 mi from Belfair, WA
2/22/2017 - 1.2 mag, 15.4mi depth 8 mi from Belfair, WA
2/22/2017 - 0.8 mag, 21.3mi depth 7 mi from Belfair, WA
2/22/2017 - 0.6 mag, 4.7mi depth 10 mi from Shelton, WA
2/22/2017 - 4.2 mag, 16.6mi depth 10 mi from Belfair, WA
12/23/2016 - 0.4 mag, 17.1mi depth 1 mi from Belfair, WA
12/21/2016 - 1.8 mag, 20.0mi depth 4 mi from Belfair, WA
8/9/2016 - 0.4 mag, 15.9mi depth 7 mi from Belfair, WA
7/28/2016 - 2.3 mag, 45.4mi depth 12 mi from Belfair, WA
5/25/2016 - 2.3 mag, 45.4mi depth 8 mi from Shelton, WA
3/5/2016 - 2.6 mag, 19.2mi depth 6 mi from Belfair, WA
1/10/2016 - 1.0 mag, 11.3mi depth 2 mi from Belfair, WA
1/9/2016 - 2.4 mag, 1.6mi depth 5 mi from Belfair, WA
1/8/2016 - 1.6 mag, 16.5mi depth 10 mi from Belfair, WA
11/9/2015 - 1.4 mag, 16.4mi depth 14 mi from Shelton, WA
8/1/2015 - 0.3 mag, 9.3mi depth 11 mi from Belfair, WA
8/1/2015 - 0.3 mag, 6.2mi depth 12 mi from Belfair, WA
7/5/2015 - 0.0 mag, 13.4mi depth 5 mi from Belfair, WA
6/21/2015 - 0.7 mag, 16.4mi depth 14 mi from Shelton, WA
6/15/2015 - 0.3 mag, 22.2mi depth 5 mi from Belfair, WA
5/19/2015 - 0.6 mag, 22.5mi depth 8 mi from Belfair, WA
2/23/2015 - 2.4 mag, 45.7mi depth 2 mi from Allyn, WA
12/19/2014 - 1.3 mag, 11.5mi depth 10 mi from Belfair, WA
12/17/2014 - 1.9 mag, 19.7mi depth 6 mi from Belfair, WA
11/3/2014 - 0.6 mag, 9.9mi depth 15 mi from Shelton, WA
7/28/2014 - 3.5 mag, 25.2mi depth 4 mi from Belfair, WA
7/24/2014 - -0.1 mag, 14.1mi depth 6 mi from Belfair, WA
6/19/2014 - 0.4 mag, 18.0mi depth 5 mi from Belfair, WA
6/7/2014 - 0.6 mag, 15.8mi depth 12 mi from Shelton, WA
4/25/2014 - 0.7 mag, 12.1mi depth 10 mi from Hoodsport, WA
4/11/2014 - 0.1 mag, 6.2mi depth 1 mi from Belfair, WA
4/6/2014 - 1.5 mag, 15.1mi depth 1 mi from Skokomish, WA
4/5/2014 - -0.2 mag, 8.5mi depth 11 mi from Hoodsport, WA
4/4/2014 - 0.2 mag, 21.2mi depth 8 mi from Belfair, WA
3/31/2014 - 0.2 mag, 22.6mi depth 8 mi from Belfair, WA
3/27/2014 - 0.0 mag, 15.0mi depth 4 mi from Belfair, WA
3/14/2014 - 2.6 mag, 21.7mi depth 6 mi from Belfair, WA
3/11/2014 - 1.1 mag, 0.0mi depth 8 mi from Shelton, WA
3/8/2014 - 0.6 mag, 20.1mi depth 8 mi from Shelton, WA
2/20/2014 - 0.9 mag, 40.9mi depth 22 mi from Hoodsport, WA
2/19/2014 - 0.2 mag, 15.9mi depth 5 mi from Belfair, WA
2/10/2014 - 1.2 mag, 39.3mi depth 13 mi from Shelton, WA
1/29/2014 - 0.3 mag, 5.7mi depth 7 mi from Allyn, WA
1/28/2014 - 0.2 mag, 16.7mi depth 10 mi from Belfair, WA
1/26/2014 - 1.0 mag, 13.5mi depth 12 mi from Shelton, WA
1/23/2014 - 1.0 mag, 52.4mi depth 1 mi from Allyn, WA
1/8/2014 - 0.0 mag, 10.0mi depth 7 mi from Belfair, WA
1/6/2014 - 0.6 mag, 5.0mi depth 19 mi from Hoodsport, WA
1/5/2014 - 0.1 mag, 11.6mi depth 8 mi from Belfair, WA
1/4/2014 - 0.0 mag, 11.2mi depth 8 mi from Belfair, WA
12/30/2013 - 0.1 mag, 22.3mi depth 6 mi from Belfair, WA
12/29/2013 - 0.1 mag, 16.9mi depth 6 mi from Belfair, WA
12/22/2013 - 0.3 mag, 17.3mi depth 10 mi from Belfair, WA
12/20/2013 - 0.4 mag, 22.9mi depth 5 mi from Belfair, WA
12/19/2013 - 2.0 mag, 25.6mi depth 3 mi from Belfair, WA
12/18/2013 - 0.3 mag, 22.1mi depth 5 mi from Belfair, WA
12/13/2013 - 1.1 mag, 0.0mi depth 8 mi from Shelton, WA
12/12/2013 - 0.3 mag, 4.1mi depth 13 mi from Belfair, WA
12/10/2013 - 0.5 mag, 12.0mi depth 15 mi from Shelton, WA
12/9/2013 - 0.7 mag, 13.4mi depth 16 mi from Shelton, WA
12/9/2013 - 0.5 mag, 12.1mi depth 15 mi from Shelton, WA
12/9/2013 - 1.0 mag, 3.5mi depth 14 mi from Shelton, WA
12/4/2013 - 0.2 mag, 24.5mi depth 5 mi from Belfair, WA
11/28/2013 - 0.1 mag, 19.3mi depth 7 mi from Belfair, WA

9/8/1976 - 4.6 mag, 48.0mi depth 2 mi from Tahuya, WA
2/22/2017 - 4.2 mag, 16.6mi depth 10 mi from Belfair, WA
6/18/1989 - 4.1 mag, 44.8mi depth 3 mi from Allyn, WA
6/16/2002 - 3.7 mag, 16.1mi depth 2 mi from Belfair, WA
10/31/1983 - 3.7 mag, 44.9mi depth 4 mi from Skokomish, WA
6/12/2021 - 3.6 mag, 40.3mi depth 1 mi from Skokomish, WA
3/30/2009 - 3.6 mag, 44.7mi depth 21 mi from Hoodsport, WA
6/15/1994 - 3.5 mag, 44.0mi depth 1 mi from Hoodsport, WA
7/28/2014 - 3.5 mag, 25.2mi depth 4 mi from Belfair, WA
10/1/2009 - 3.4 mag, 43.9mi depth 6 mi from Shelton, WA
6/21/2021 - 3.2 mag, 44.3mi depth 2 mi from Skokomish, WA
7/6/2003 - 3.0 mag, 8.2mi depth 4 mi from Belfair, WA
9/11/1990 - 3.0 mag, 18.0mi depth 2 mi from Shelton, WA
4/11/2007 - 2.9 mag, 47.8mi depth 4 mi from Skokomish, WA
10/14/1994 - 2.9 mag, 2.2mi depth 2 mi from Belfair, WA
9/3/1999 - 2.9 mag, 0.0mi depth 7 mi from Hoodsport, WA
6/18/2006 - 2.8 mag, 26.7mi depth 2 mi from Belfair, WA
1/23/2018 - 2.8 mag, 48.3mi depth 5 mi from Belfair, WA
5/27/2011 - 2.8 mag, 51.7mi depth 2 mi from Belfair, WA
2/14/2019 - 2.8 mag, 40.3mi depth 8 mi from Shelton, WA
9/5/1999 - 2.8 mag, 46.7mi depth 3 mi from Shelton, WA
4/12/2002 - 2.7 mag, 43.5mi depth 2 mi from Skokomish, WA
12/25/2019 - 2.7 mag, 2.2mi depth 9 mi from Shelton, WA
12/10/2017 - 2.7 mag, -0.4mi depth 8 mi from Belfair, WA
3/7/2024 - 2.6 mag, 40.9mi depth 17 mi from Hoodsport, WA
2/23/2004 - 2.6 mag, 45.6mi depth 3 mi from Hoodsport, WA
3/14/2014 - 2.6 mag, 21.7mi depth 6 mi from Belfair, WA
10/2/2008 - 2.6 mag, 44.6mi depth 6 mi from Hoodsport, WA
8/10/1995 - 2.6 mag, 13.5mi depth 4 mi from Belfair, WA
3/5/2016 - 2.6 mag, 19.2mi depth 6 mi from Belfair, WA
12/8/2017 - 2.5 mag, 43.2mi depth 10 mi from Allyn, WA
11/11/2013 - 2.5 mag, 43.2mi depth 7 mi from Hoodsport, WA
3/4/2013 - 2.4 mag, 18.9mi depth 4 mi from Belfair, WA
1/9/2016 - 2.4 mag, 1.6mi depth 5 mi from Belfair, WA
2/23/2015 - 2.4 mag, 45.7mi depth 2 mi from Allyn, WA
7/28/2016 - 2.3 mag, 45.4mi depth 12 mi from Belfair, WA
7/28/2018 - 2.3 mag, 15.7mi depth 6 mi from Belfair, WA
5/25/2016 - 2.3 mag, 45.4mi depth 8 mi from Shelton, WA
7/13/2019 - 2.2 mag, 18.6mi depth 3 mi from Belfair, WA
9/29/2022 - 2.2 mag, 30.9mi depth 5 mi from Grapeview, WA
3/22/2020 - 2.2 mag, 42.4mi depth 19 mi from Shelton, WA
2/4/2020 - 2.0 mag, -0.3mi depth 7 mi from Shelton, WA
6/1/2013 - 2.0 mag, 12.2mi depth 6 mi from Belfair, WA
12/19/2013 - 2.0 mag, 25.6mi depth 3 mi from Belfair, WA
2/14/2024 - 2.0 mag, 29.2mi depth 0 mi from Belfair, WA
7/1/2013 - 1.9 mag, 22.6mi depth 3 mi from Belfair, WA
9/15/2021 - 1.9 mag, 19.8mi depth 3 mi from Belfair, WA
12/17/2014 - 1.9 mag, 19.7mi depth 6 mi from Belfair, WA
12/21/2016 - 1.8 mag, 20.0mi depth 4 mi from Belfair, WA
8/20/2013 - 1.8 mag, 19.5mi depth 4 mi from Belfair, WA
5/7/2020 - 1.8 mag, -0.5mi depth 7 mi from Shelton, WA
11/24/2013 - 1.8 mag, 16.1mi depth 7 mi from Belfair, WA
3/29/2021 - 1.8 mag, 42.1mi depth 15 mi from Hoodsport, WA
8/27/2013 - 1.7 mag, 48.0mi depth 1 mi from Skokomish, WA
3/5/2013 - 1.7 mag, 19.3mi depth 1 mi from Belfair, WA
3/18/2024 - 1.7 mag, -0.2mi depth 5 mi from Shelton, WA
7/18/2013 - 1.7 mag, 14.6mi depth 2 mi from Hoodsport, WA
6/10/2021 - 1.6 mag, -0.2mi depth 8 mi from Shelton, WA
12/8/2019 - 1.6 mag, 20.8mi depth 2 mi from Belfair, WA
1/8/2016 - 1.6 mag, 16.5mi depth 10 mi from Belfair, WA
5/5/2023 - 1.6 mag, 25.3mi depth 1 mi from Belfair, WA
9/6/2018 - 1.6 mag, -0.3mi depth 7 mi from Shelton, WA
2/5/2024 - 1.6 mag, 12.2mi depth 6 mi from Belfair, WA
3/13/2017 - 1.5 mag, 38.4mi depth 3 mi from Shelton, WA
6/26/2013 - 1.5 mag, 46.3mi depth 1 mi from Hoodsport, WA
4/6/2014 - 1.5 mag, 15.1mi depth 1 mi from Skokomish, WA
2/5/2024 - 1.5 mag, 13.2mi depth 6 mi from Belfair, WA
12/30/2021 - 1.4 mag, 43.7mi depth 14 mi from Hoodsport, WA
11/9/2015 - 1.4 mag, 16.4mi depth 14 mi from Shelton, WA
2/22/2017 - 1.4 mag, 18.2mi depth 8 mi from Belfair, WA
10/25/2019 - 1.3 mag, 17.3mi depth 5 mi from Belfair, WA
8/24/2017 - 1.3 mag, 4.7mi depth 5 mi from Belfair, WA
12/19/2014 - 1.3 mag, 11.5mi depth 10 mi from Belfair, WA
8/31/2018 - 1.2 mag, 24.9mi depth 1 mi from Belfair, WA
2/22/2017 - 1.2 mag, 15.4mi depth 8 mi from Belfair, WA
2/10/2014 - 1.2 mag, 39.3mi depth 13 mi from Shelton, WA
4/26/2013 - 1.1 mag, 0.0mi depth 8 mi from Shelton, WA
3/11/2014 - 1.1 mag, 0.0mi depth 8 mi from Shelton, WA
1/31/2020 - 1.1 mag, 4.6mi depth 15 mi from Shelton, WA
12/13/2013 - 1.1 mag, 0.0mi depth 8 mi from Shelton, WA
4/3/2013 - 1.1 mag, 45.0mi depth 5 mi from Belfair, WA
7/14/2013 - 1.1 mag, 41.0mi depth 6 mi from Skokomish, WA
2/22/2017 - 1.1 mag, 20.1mi depth 8 mi from Belfair, WA
7/18/2013 - 1.1 mag, 16.5mi depth 1 mi from Hoodsport, WA
4/22/2013 - 1.0 mag, 0.0mi depth 11 mi from Skokomish, WA
12/9/2013 - 1.0 mag, 3.5mi depth 14 mi from Shelton, WA
8/16/2013 - 1.0 mag, 40.6mi depth 10 mi from Skokomish, WA
1/23/2014 - 1.0 mag, 52.4mi depth 1 mi from Allyn, WA
1/26/2014 - 1.0 mag, 13.5mi depth 12 mi from Shelton, WA
1/10/2016 - 1.0 mag, 11.3mi depth 2 mi from Belfair, WA
7/22/2013 - 1.0 mag, 0.0mi depth 15 mi from Skokomish, WA
2/20/2014 - 0.9 mag, 40.9mi depth 22 mi from Hoodsport, WA
7/14/2013 - 0.9 mag, 0.0mi depth 2 mi from Shelton, WA
6/13/2013 - 0.9 mag, 23.4mi depth 1 mi from Belfair, WA
10/12/2013 - 0.9 mag, 10.0mi depth 10 mi from Skokomish, WA
6/14/2013 - 0.9 mag, 0.0mi depth 6 mi from Shelton, WA
8/26/2013 - 0.9 mag, 13.1mi depth 13 mi from Skokomish, WA
6/26/2013 - 0.8 mag, 2.7mi depth 1 mi from Belfair, WA
8/10/2013 - 0.8 mag, 21.9mi depth 5 mi from Belfair, WA
8/16/2013 - 0.8 mag, 8.4mi depth 10 mi from Skokomish, WA

View All

Earthquake Probability for Mason County, WA

View the probability of a major earthquake within the next 50 years in Mason County, WA.

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

89.80%

5.1

86.84%

5.2

86.84%

5.2

83.54%

5.3

79.96%

5.4

76.16%

5.5

72.20%

5.6

68.16%

5.7

64.08%

5.8

60.02%

5.9

56.02%

6.0

52.12%

6.1

47.57%

6.2

43.13%

6.3

38.78%

6.4

34.60%

6.5

30.48%

6.6

26.26%

6.7

22.08%

6.8

17.99%

6.9

14.05%

7.0

10.03%

7.1

6.31%

7.2

2.68%

7.3

2.40%

7.4

2.35%

7.5

2.33%

7.6

2.33%

7.7

2.33%

7.8

2.33%

7.9

2.33%

8.0

2.33%

8.1

2.24%

8.2

2.15%

8.3

2.07%

8.4

1.90%

8.5

1.72%

8.6

1.57%

8.7

1.42%

8.8

1.27%

8.9

1.02%

9.0

1.02%

9.1

0.26%

9.2

0.26%

Earthquake Count for Mason County, WA

View the number of earthquake incidents in Mason County, WA by year that are more than 2.5 Magnitude.

List of Earthquake Incidents for Mason County, WA

Total Number of Earthquakes in Mason County, WA within 30 miles. All distances and depths in the table are measured in miles.

Date

Magnitude

Depth

03/18/2024

1.7

-0.2

Earthquake Information for Mason County, Washington

Earthquake Probability for Mason County, WA

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

Earthquake Count for Mason County, WA

List of Earthquake Incidents for Mason County, WA

Risk Of Natural Disasters In Mason County, WA

Related Pages

Washington Earthquakes by City