The New Madrid seismic zone since 1973
Since 1973, the catalog lists 727 earthquakes of magnitude 2.5 or more in the box around the New Madrid zone, the largest magnitude 4.8. The large 1811-12 earthquakes came long before instruments and are not in this catalog.
By year
The box used here runs from 35 to 37.5 degrees north and from 88.5 to 91.5 degrees west. It is our own frame, not an official boundary.
Earthquakes of magnitude 2.5 or more in the New Madrid box
| Sep 26, 1990 | 4.8 | 4 km SE of Chaffee, Missouri |
| Mar 25, 1976 | 4.6 | 8 km NW of Marked Tree, Arkansas |
| May 4, 1991 | 4.5 | 2 km NNW of Risco, Missouri |
| Apr 27, 1989 | 4.3 | 4 km E of Steele, Missouri |
| Sep 29, 1987 | 4.3 | 6 km SSE of Cairo, Illinois |
| May 13, 1974 | 4.3 | 7 km S of East Prairie, Missouri |
| Jun 13, 1975 | 4.3 | 6 km WNW of Marston, Missouri |
| Mar 25, 1976 | 4.2 | 7 km SSE of Trumann, Arkansas |
| May 1, 2005 | 4.2 | 5 km SSE of Manila, Arkansas |
| Feb 5, 1994 | 4.2 | 2 km WNW of Dongola, Illinois |
| Jan 8, 1974 | 4.1 | 11 km SE of Ridgely, Tennessee |
| Feb 10, 2005 | 4.1 | 3 km NNW of Etowah, Arkansas |
| Jun 13, 1987 | 4.1 | 4 km SW of Catron, Missouri |
| Apr 23, 2026 | 4.0 | 1 km WNW of Cooter, Missouri |
| Nov 18, 2021 | 4.0 | 7 km S of Williamsville, Missouri |
| Jun 2, 2005 | 4.0 | 12 km S of Ridgely, Tennessee |
| Jun 6, 2003 | 4.0 | 1 km NE of Bardwell, Kentucky |
| Apr 30, 2003 | 4.0 | 1 km N of Blytheville, Arkansas |
| Aug 7, 1981 | 4.0 | 9 km SW of Yorkville, Tennessee |
| Oct 21, 1999 | 3.9 | 9 km NW of Maynard, Arkansas |
| Feb 21, 2012 | 3.9 | 4 km SSE of Bertrand, Missouri |
| Aug 22, 2000 | 3.9 | 19 km WNW of Maynard, Arkansas |
| Jun 11, 1979 | 3.9 | 2 km S of Caruthersville, Missouri |
| Oct 29, 2012 | 3.9 | 8 km SW of Parkin, Arkansas |
| Sep 17, 1997 | 3.8 | 2 km E of Trumann, Arkansas |
| May 16, 2024 | 3.8 | 6 km S of Ridgely, Tennessee |
| Dec 27, 2023 | 3.8 | 6 km NE of Etowah, Arkansas |
| Oct 9, 1973 | 3.8 | 1 km SSE of Marston, Missouri |
| Dec 2, 1980 | 3.8 | 7 km SE of Ridgely, Tennessee |
| Nov 29, 1996 | 3.8 | 1 km W of Blytheville, Arkansas |
| Oct 14, 1987 | 3.8 | 5 km NW of Massac, Kentucky |
| Mar 2, 2010 | 3.7 | 2 km ENE of East Prairie, Missouri |
| Feb 23, 2013 | 3.7 | 7 km SW of Trumann, Arkansas |
| Nov 3, 2024 | 3.7 | 2 km E of Steele, Missouri |
| Apr 24, 2019 | 3.7 | 12 km NNW of Dyersburg, Tennessee |
| Jan 16, 2018 | 3.6 | 4 km SW of Caruthersville, Missouri |
| Oct 15, 2017 | 3.6 | 6 km SE of Manila, Arkansas |
| Aug 11, 1974 | 3.6 | 17 km NE of Alton, Missouri |
| Jul 5, 1980 | 3.6 | 3 km ENE of Lilbourn, Missouri |
| Feb 14, 1984 | 3.6 | 5 km SSE of New Grand Chain, Illinois |
| Aug 30, 2020 | 3.6 | 3 km WNW of Marked Tree, Arkansas |
| Apr 2, 2015 | 3.6 | 1 km WNW of Cooter, Missouri |
| Jun 20, 2005 | 3.6 | 4 km WSW of Blandville, Kentucky |
| Sep 25, 1976 | 3.6 | 7 km SE of Trumann, Arkansas |
| Sep 22, 2011 | 3.6 | 6 km E of Grandin, Missouri |
| Mar 15, 2017 | 3.6 | 9 km ESE of Wyatt, Missouri |
| May 1, 2016 | 3.5 | 5 km SE of New Grand Chain, Illinois |
| Aug 31, 1978 | 3.5 | 6 km NNW of Dyersburg, Tennessee |
| Dec 5, 1985 | 3.5 | 6 km NE of Dell, Arkansas |
| Jun 26, 1981 | 3.5 | 3 km W of Dell, Arkansas |