Earthquake Information for Merrimack County, New Hampshire

Merrimack County, NH has a low earthquake risk, with a total of 10 earthquakes since 1931. The USGS database shows that there is a 3.42% chance of a major earthquake within 50km of Merrimack County, NH within the next 50 years. The largest earthquake within 30 miles of Merrimack County, NH was a 4.5 Magnitude in 1982.

Risk Level:
Low

Total Number of Earthquakes in Merrimack County since 1931

Probability of A 5.0 Earthquake within next 50 years

3.42%

Most Recent
Largest

1/3/2024 - 2.0 mag, 5.0mi depth 3 mi from Loudon, NH
12/22/2023 - 2.7 mag, 5.0mi depth 4 mi from Concord, NH
3/21/2016 - 2.9 mag, 5.0mi depth 4 mi from Contoocook, NH
8/1/2015 - 2.2 mag, 3.6mi depth 4 mi from Epsom, NH
5/24/2015 - 2.5 mag, 0.0mi depth 3 mi from Boscawen, NH
5/24/2015 - 2.3 mag, 5.0mi depth 3 mi from Boscawen, NH
4/30/2015 - 2.1 mag, 5.0mi depth 2 mi from Contoocook, NH
3/25/2015 - 0.5 mag, 0.0mi depth 3 mi from Contoocook, NH
10/2/2014 - 1.7 mag, 3.8mi depth 3 mi from Concord, NH
3/13/2014 - 1.6 mag, 4.5mi depth 2 mi from Concord, NH
10/11/2013 - 2.6 mag, 3.8mi depth 3 mi from Contoocook, NH
9/26/2010 - 3.4 mag, 3.4mi depth 1 mi from Boscawen, NH
8/28/2004 - 2.1 mag, 5.0mi depth 3 mi from Dunbarton, NH
1/20/2004 - 2.5 mag, 9.6mi depth 4 mi from Henniker, NH
10/6/1992 - 3.4 mag, 5.0mi depth 3 mi from Canterbury, NH
10/6/1992 - 2.3 mag, 5.0mi depth 4 mi from Canterbury, NH
2/9/1988 - 2.6 mag, 5.0mi depth 4 mi from Henniker, NH
10/25/1986 - 1.9 mag, 5.0mi depth 2 mi from Northfield, NH
10/25/1986 - 2.6 mag, 5.0mi depth 0 mi from Northfield, NH
10/25/1986 - 3.9 mag, 5.0mi depth 1 mi from Northfield, NH
9/4/1981 - 1.9 mag, 10.0mi depth 2 mi from Salisbury, NH
3/31/1978 - 2.7 mag, 0.0mi depth 1 mi from Dunbarton, NH
12/25/1977 - 3.2 mag, 0.0mi depth 1 mi from Hopkinton, NH

10/25/1986 - 3.9 mag, 5.0mi depth 1 mi from Northfield, NH
9/26/2010 - 3.4 mag, 3.4mi depth 1 mi from Boscawen, NH
10/6/1992 - 3.4 mag, 5.0mi depth 3 mi from Canterbury, NH
12/25/1977 - 3.2 mag, 0.0mi depth 1 mi from Hopkinton, NH
3/21/2016 - 2.9 mag, 5.0mi depth 4 mi from Contoocook, NH
3/31/1978 - 2.7 mag, 0.0mi depth 1 mi from Dunbarton, NH
12/22/2023 - 2.7 mag, 5.0mi depth 4 mi from Concord, NH
10/11/2013 - 2.6 mag, 3.8mi depth 3 mi from Contoocook, NH
10/25/1986 - 2.6 mag, 5.0mi depth 0 mi from Northfield, NH
2/9/1988 - 2.6 mag, 5.0mi depth 4 mi from Henniker, NH
5/24/2015 - 2.5 mag, 0.0mi depth 3 mi from Boscawen, NH
1/20/2004 - 2.5 mag, 9.6mi depth 4 mi from Henniker, NH
10/6/1992 - 2.3 mag, 5.0mi depth 4 mi from Canterbury, NH
5/24/2015 - 2.3 mag, 5.0mi depth 3 mi from Boscawen, NH
8/1/2015 - 2.2 mag, 3.6mi depth 4 mi from Epsom, NH
4/30/2015 - 2.1 mag, 5.0mi depth 2 mi from Contoocook, NH
8/28/2004 - 2.1 mag, 5.0mi depth 3 mi from Dunbarton, NH
1/3/2024 - 2.0 mag, 5.0mi depth 3 mi from Loudon, NH
9/4/1981 - 1.9 mag, 10.0mi depth 2 mi from Salisbury, NH
10/25/1986 - 1.9 mag, 5.0mi depth 2 mi from Northfield, NH
10/2/2014 - 1.7 mag, 3.8mi depth 3 mi from Concord, NH
3/13/2014 - 1.6 mag, 4.5mi depth 2 mi from Concord, NH
3/25/2015 - 0.5 mag, 0.0mi depth 3 mi from Contoocook, NH

View All

Earthquake Probability for Merrimack County, NH

View the probability of a major earthquake within the next 50 years in Merrimack County, NH.

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

3.42%

5.1

2.77%

5.2

2.77%

5.2

2.77%

5.3

2.24%

5.4

1.82%

5.5

1.47%

5.6

1.37%

5.7

1.11%

5.8

0.98%

5.9

0.80%

6.0

0.74%

6.1

0.59%

6.2

0.52%

6.3

0.41%

6.4

0.38%

6.5

0.30%

6.6

0.25%

6.7

0.23%

6.8

0.17%

6.9

0.13%

7.0

0.11%

7.1

0.07%

7.2

0.05%

7.3

0.04%

7.4

0.02%

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 Merrimack County, NH

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

List of Earthquake Incidents for Merrimack County, NH

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

Date

Magnitude

Depth

01/03/2024

2.0

5.0

Earthquake Information for Merrimack County, New Hampshire

Earthquake Probability for Merrimack County, NH

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

Earthquake Count for Merrimack County, NH

List of Earthquake Incidents for Merrimack County, NH

Risk Of Natural Disasters In Merrimack County, NH

Related Pages

New Hampshire Earthquakes by City