Parts of Mammoth Spring and Thayer were rattled early Nov. 2 around 4:11 a.m. by a magnitude 2.3 earthquake.
According to the Cooperative New Madrid Seismic Network, the GPS coordinates of the epicenter of the earthquake was near the state line. Those coordinates are about two miles west northwest of Mammoth Spring, two miles southwest of Thayer and eight miles southeast of Koshkonong. The earthquake occurred at a depth of about 0.4 miles.
Residents in Mammoth Spring and Thayer said the small earthquake was like waking up to a loud boom, others said it was similar to a train running by their house.
That same day around 9:55 a.m., another earthquake was felt near Clinton, Ark., which was a magnitude 2.5, according to the U.S. Geological Survey. The earthquake occurred at approximately 0.1 miles below the surface.
Earthquakes of this magnitude are relatively small compared to those that occur on the West Coast and in other parts of the world.
The U.S. Geological Survey states that there is a difference between the impact of earthquakes west of the Rocky Mountains and the impact of those east of them.
"Earthquakes east of the Rocky Mountains, although less frequent than in the west, are typically felt over a much broader region. East of the Rockies, an earthquake can be felt over an area as much as 10 times larger than a similar magnitude earthquake on the west coast," according to the U.S. Geological Survey.
For a list of recent quake activity in the central U.S. go to Areawide Media's newspapers' Web sites at www.areawidenews.com, www.villagerjournal.com or www.southmissouriannews.com. The information can be viewed by scrolling down to the weather section and clicking on the "Quakes" tab.