The New Madrid Seismic Zone, located in the central United States, is one of the most active earthquake regions in North America. The earthquakes here are not as frequent as those on the West Coast, but they can be just as powerful.
The last significant earthquake to occur here was in 1811 and 1812. Since then, there have been smaller earthquakes, but none have been as powerful.
What is the New Madrid Seismic Zone?
The New Madrid Seismic Zone (NMSZ) is a region of seismic activity located in the central United States. It stretches from northeastern Arkansas to southern Illinois and from western Kentucky to western Tennessee. The NMSZ is named after the town of New Madrid, Missouri, which was heavily impacted by a series of earthquakes that occurred in 1811 and 1812.
When Was the Last Earthquake?
The last significant earthquake to occur in the NMSZ was on February 7, 1812. It was estimated to be around magnitude 7.5 and was felt as far away as Canada. There were several aftershocks that followed over the next few months, with some estimated to be around magnitude 6.
Why is it Important?
Even though it has been over two hundred years since a significant earthquake has occurred in the NMSZ, it is still important to monitor this region for seismic activity. The area is home to several major cities including Memphis, Tennessee; St. Louis, Missouri; and Little Rock, Arkansas. A major earthquake could cause significant damage and loss of life.
Conclusion
In conclusion, the last significant earthquake to occur in the New Madrid Seismic Zone was on February 7, 1812. While there have been smaller earthquakes since then, none have been as powerful. Despite this long gap between significant earthquakes, it is still important to monitor the NMSZ for seismic activity due to the potential for a major earthquake to occur in this region.