4.7 Earthquake - AR

[Kevin]

Continue Discussion of the 4.7 Quake in Central Arkansas here - occurred at 11:01 PM...

USGS Report...
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/nm022811a.php

[Kevin]

Statement from LZK...

AN EARTHQUAKE OCCURRED THIS EVENING IN FAULKNER COUNTY. CALLS TO THE
NATIONAL WEATHER SERVICE INDICATE IT WAS FELT ALL THE WAY TO THE
MISSOURI BORDER...AND EVEN INTO PORTIONS OF SOUTHEAST ARKANSAS
TOWARD THE MISSISSIPPI RIVER.

THE EARTHQUAKE MEASURED 4.7 ON THE MODIFIED MERCALLI INTENSITY
SCALE. THE EARTHQUAKE HAPPENED AT 1101 PM CDT...4 MILES NORTHEAST OF
GREENBRIER. THE EARTHQUAKE WAS REPORTED BY THE UNITED STATES
GEOLOGICAL SURVEY.

INFORMATION RELEASED IN THIS STATEMENT IS PRELIMINARY. UPDATES...
INCLUDING RICHTER SCALE MAGNITUDE...WILL BE PROVIDED AS MORE
INFORMATION BECOMES AVAILABLE FROM THE NATIONAL EARTHQUAKE
INFORMATION CENTER IN GOLDEN COLORADO.

[bugalou]

So far I have gathered from internet reports it was felt in the following areas:

Conway, AR
Fayetteville, AR
Eureka Springs, AR
Yocum, AR
Ozark, AR
Springfield, MO
Memphis, TN

[Kevin]

So far I have gathered from internet reports it was felt in the following areas:

Conway, AR
Fayetteville, AR
Eureka Springs, AR
Springfield, MO
Yocum, AR

Commerical Appeal is reporting some in Memphis have felt it as well...though I sure didn't.

Just from MEG as well...

EARTHQUAKE REPORT
RELAYED BY NATIONAL WEATHER SERVICE MEMPHIS TN
1144 PM CST SUN FEB 27 2011

AN EARTHQUAKE HAS BEEN MODERATELY FELT BY A FEW PEOPLE ALONG AND WEST
OF THE MISSISSIPPI RIVER AROUND 11 PM CST. NO DAMAGE HAS BEEN
REPORTED.

THE UNITED STATES GEOLOGICAL SURVEY REPORTS A MAGNITUDE 4.7
EARTHQUAKE OCCURRED AROUND 11 PM CST 14 MILES NORTH OF CONWAY
ARKANSAS OR 37 MILES NORTH OF LITTLE ROCK ARKANSAS.

[bugalou]

I didn't feel it here.
Hopefully this will get the USGS to study this a little more closely.  They have largely ignored the swarm for the past year.  This swarm has been just as active as Iceland and Yellowstone in frequency, and those are both active volcanic hot spots.  The cause of the AR quakes remains largely a mystery.

[bugalou]

More reports that it lasted 8-9 minutes.
Some damage being reported in Mountain Home.

[harlequin]

Yeah, my FB has several reports of people feeling it around Memphis. Cousins in Bryant, AR reporting beds were shaking. 2 claims from far NW MS reporting they felt it. I didn't notice anything. I think I was outside at the moment it occurred.

[Kevin]

I didn't feel it here.
Hopefully this will get the USGS to study this a little more closely.  They have largely ignored the swarm for the past year.  This swarm has been just as active as Iceland and Yellowstone in frequency, and those are both active volcanic hot spots.  The cause of the AR quakes remains largely a mystery.

I would like to know as well. I know most have said its due to the drilling going on in that area (which can cause earthquake swarms)...but this is getting awfully excessive and strong to be convinced by that anymore...

[bugalou]

I would like to know as well. I know most have said its due to the drilling going on in that area (which can cause earthquake swarms)...but this is getting awfully excessive and strong to be convinced by that anymore...

Yeah.  Some say it was due to fracking, but a 4.7 isn't going to be caused by that, especially in the range in which the quake was felt.
I just hope this isn't tied in to new madrid in anyway, I don't want that waking up any time soon.

Lots of reports of the quake being very loud and starting with an explosive sound.

[Kevin]

Yeah.  Some say it was due to fracking, but a 4.7 isn't going to be caused by that, especially in the range in which the quake was felt.
I just hope this isn't tied in to new madrid in anyway, I don't want that waking up any time soon.

Lots of reports of the quake being very loud and starting with an explosive sound.

Interesting to note this area has had 57 earthquakes in the last week...the "traditional" NMSZ...which this doesn't "appear" to be a part of...1.

[bugalou]

Interesting to note this area has had 57 earthquakes in the last week...the "traditional" NMSZ...which this doesn't "appear" to be a part of...1.

This place has been rocking and rolling for well over a year.  I am not sure of this 4.7 was the climax, or a sign of things to come.

[Kevin]

WMC is running a crawl saying it has been felt by several as far East as West TN and North MS.

[InMemphis]

Not exactly the kind of crawl I was expecting. Did not feel a thing in Germantown.

[bugalou]

Seismometers as far away as VA picked up the quake.  I am very hard pressed to attribute this to natural gas drilling.

 

[HayleyH]

This is in my hometown of Guy where my entire maternal family still lives- it's scary to wake up to check the weather and see this. Especially because as I was drifting off to sleep earlier, I felt the bed tremble , but thought it was my husband moving. Now I know that wasn't the case. It's funny too because I thought to myself that it kinda felt like an earthquake, but poo poo'd the idea.

With something of this intensity and the fact that they have slowly been getting higher and higher in intensity, it doesn't make sense for this to be related to the natural gas line. This is really, really scary to me.

Just sent in my report to the USGS.