A swarm of earthquakes rattled along the New Madrid fault line, sparking fear of the “big one” shaking the area known for tremors. Centered in New Madrid, Missouri, the seismic zone “is the most ...

It’s the most active seismic area in the United States east of the Rockies ... and other places outside the New Madrid Seismic Zone that have been active in the past few thousand to millions ...

The New Madrid Seismic Zone, which stretches across several states in the central U.S., was the site of four of the largest earthquakes in continental North American history between December 1811 ...

Earthquakes aren't something we think a lot about here in the state of Iowa. We tend to be more worried about tornados and ...

According to the United States Geological Survey ... of frequent earthquake activity that impact the state: the New Madrid Seismic Zone, the Southern Appalachian Seismic Zone, the South Carolina ...