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.
View the probability of a major earthquake within the next 50 years in Merrimack County, NH.
View the number of earthquake incidents in Merrimack County, NH by year that are more than 2.5 Magnitude.
Total Number of Earthquakes in Merrimack County, NH within 30 miles. All distances and depths in the table are measured in miles.