Swarm of Arkansas Earthquakes

Farmland that shifted due to earthquake in New Madrid faultline.

A 4.7 magnitude earthquake hit Greenbrier, Arkansas Sunday night at 11PM. Three more earthquakes had hit the city with the last one a 3.2 magnitude quake at 7:06 this morning. Greenbrier is located in central Arkansas.

Residents of Oklahoma, Mississippi, Missouri and Tennessee also felt the quake.

The Earthquakes Hazards Program website states that earthquakes are not uncommon today:

There’s a 100 percent chance of an earthquake today. Though millions of persons may never experience an earthquake, they are very common occurrences on this planet. So today — somewhere — an earthquake will occur.

There has been a swarm of earthquakes in Arkansas as this list of Arkansas quakes from the U.S. Geological Survey website show. The list is not current as the last listing is for February 21 but still shows earthquakes have been prevalent in Arkansas lately.

http://neic.usgs.gov/neis/qed/

The list shows 21 earthquakes have been recorded from February 16 to February 21. These lists really need to be more up to date since we can’t see what earthquake activity led to the 4.7 earthquake yesterday.

However this article from Arkansasmatters.com reports that nearly 60 earthquakes have been recorded in the Greenbrier, Arkansas from Monday to Saturday of last week.

http://arkansasmatters.com/fulltext/?nxd_id=396376

The USGS will more than likely be watching this area closely in the coming days and weeks to if this earthquake activity in Arkansas slacks off or worsens.

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2 thoughts on “Swarm of Arkansas Earthquakes

  1. >” The New Madrid faultline is located in the area.”

    Um, not really. Greenbrier is about 100 miles from the southern terminus of the New Madrid Fault. There are several other geologic features separating the two areas.

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