How Many States Does the New Madrid Fault Cross?

By Robert Palmer

The New Madrid Fault Zone, which is located in the central United States, is one of the most significant seismic zones in the country. It is known for producing some of the most powerful earthquakes in North America, including the 1811-1812 earthquakes that are considered to be some of the largest quakes ever recorded in the continental US.

But how many states does this fault cross? Let’s find out.

What is the New Madrid Fault Zone?

The New Madrid Fault Zone (NMFZ) is a seismic zone that stretches from Cairo, Illinois to Marked Tree, Arkansas. It passes through five states: Illinois, Missouri, Arkansas, Kentucky, and Tennessee. The NMFZ is not a single fault but rather a network of faults that run through these states.

How Many States Does the New Madrid Fault Cross?

As mentioned earlier, the NMFZ crosses five states: Illinois, Missouri, Arkansas, Kentucky, and Tennessee. It is important to note that while these are the primary states that are affected by this fault zone, other neighboring states may also experience tremors or aftershocks from large earthquakes.

Why is it called “New Madrid”?

The name “New Madrid” comes from the town of New Madrid in Missouri. This town was established in 1789 by Spanish Governor Esteban Rodríguez Miró as part of Spain’s effort to colonize Louisiana Territory. The town was located near several Native American settlements and had strategic importance due to its location on the Mississippi River.

What Makes the New Madrid Fault Zone So Dangerous?

The NMFZ is dangerous because it has produced some of the largest earthquakes ever recorded in North America. The 1811-1812 earthquakes were so powerful that they caused sections of land to uplift or sink as much as 15 feet. They also caused the Mississippi River to flow backward in some places and created new lakes and waterfalls.

Conclusion

The New Madrid Fault Zone is a significant seismic zone that crosses five states in the central United States. While it is not as well-known as other fault zones such as the San Andreas Fault, it has produced some of the largest earthquakes ever recorded in North America. It is important for people living in these states to be aware of this fault zone and take necessary precautions to prepare for potential earthquakes.