Felt that one! (4.7 just West of Woolly Hollow)

[Cowper]

Heard a rumble, watched the couches Debo and I were sitting on shake just a little bit, a few things rattled.

My first "felt" earthquake that was strong enough to leave no doubt what it was! Epicenter was less than 11 miles from home, at 35.265°N, 92.340°W
At about 11:00 PM

(Now, gotta go find me a tornado and snap a photo.)

[powrachute_pilot]

Wow! My wife and I even felt that one in Nashville, AR! We looked at each other and said, Did you feel your chair moving? Looked on the usgs.gov site and saw the earthquake report of 4.7

[FarPastGone]

Defenitely the most substantial earthquake since the recent spurt of increased activity in the Guy/Greenbrier area started last fall. Be interesting to see what they determine the magnitude to be after they re-evaluate it.

Report your experience to the USGS at:

http://earthquake.usgs.gov/earthquakes/ ... index.html" onclick="window.open(this.href);return false;

- Matt

[ebell]

We felt it at Aurora AR.

eric

[Roger]

:shock: 4.7.

[Fish]

I know there'll be a lot of blame going around, but it's really the earthquake fault...

[Jim Krueger]

First one for me too Cowper! Laying in bed watching TV when the house here in Benton seemed to shake for 2-3 seconds. I could only wonder if it was a gust of wind hitting the house but it seemed odd for the duration...

Jim Moose

[GN YAKN]

Wow! We didn't feel the house shake but the house made a really wierd noise about that time last night. We attributed it to the wind since there was a front expected to move through. It sounded like the wind when it hits the eaves of the house and kind of tries to lift the house. But, we didn't hear any wind!

I asked a student at school this morning if he felt the quake and he described his house doing the same thing and everyone at his house thinking the same thing. It's the wind, but, the wind isn't blowing! No shakes though.

Hope that's as big as it gets!!! :shock:

[bmartin]

Received a text alert about the tonado watch at 10, went to bed, woke up startled to the rumbling noise and rattling of windows thinking it was game on for a tornado and got everyone headed to the basement before I figured out it was a different natural event. Also felt the one 15 minutes later and the others about 10 days ago were real shakers at my house.

Now why did I drop that earthquake rider 5 years ago???

[Cowper]

Thanks for the tip, Matt. I had just recently heard of that page while talking to another Conwayite who had reported on an earlier event, so the first thing I did was to go to that page to see what was there and to fill out my own report.

There seems to be some glitch in that right now, the quake doesn't show up on the "last 24 hours" or "last seven days" report, but when I poked around last night I found another page on the same site with real-time data that corresponded exactly to when we felt the shaking. That's how I was able to say it was less than 11 miles from home...

It's amazing to me how some from much further away felt it; I'm sure it is highly variable according to exactly what type of soil or rock you house is built on.

[Karla]

I was in bed fast asleep at 11pm. Gary was up and the recliner he was in started moving about he told me.

Karla

[Wildwood]

Cowper, your mention of "what kind of dirt or rock your house is built on" has made me think I may have a problem related to the shakers (and fracing). :shock: I'm about midway between Bee Branch & Quitman, on #356. My house is only 10 years old and built pretty solid. At least that is what I thought. Within the last 6 months, my house has settled so much there are ridges in the bathroom floor, living room, and my bedroom floor. I can see nailheads that are raised underneath the vinyl. No problem at all until the past few months. Some of my doors are not shutting right, either. I've felt a few of the quakes. I keep a glass of water setting on my kitchen counter so I can see if it is moving . . . :roll:

[Ryan Center]

It was kinda funny. I was sitting in my chair at home, playing on the computer, and it felt like someone leaned up against my char. I looked behind me........then stood up and looked right behind the chair to see if i had a sneaky child out of bed. At the same instant I felt the chair move, my dog stood up and acted excited too. Thought "huh, that was weird".
My wife woke up in thinking the kids were awake upstairs.

Then my mom called me (who lives at the other end of the street) and asked, "did you feel that"? She said it shook her ceiling fan and pictures on the wall. While on the phone, a friend chatted me (who lives at lake fort smith park) and asked, "did you feel that" all within seconds of the event.

I thought, "wow, who is doing a blow log"?

[DeBo]

The epicenter of the quake last night was 1.8 miles southwest of injection well # 36380; one of 7 new deep injection wells which handle millions of gallons of liquid toxic waste from hydraulic fracturing. The quake occured at the same depth as injection well #36380.

The Arkansas Geological Commission has found no correllation between production wells and our recent seizmic activity, but has not ruled out the injection wells. Quakes in California and Colorado several years ago were directly linked to deep injection wells. The injected fluids lubricated areas where pressure was building, allowing rock layers to release and move.

Last night was spooky. The best I can describe is that the house felt like a boat on water for about three seconds before it ran aground and there was a rumbling sound like thunder.

[FarPastGone]

The focus was over 12,000 feet deep, which is way deeper than the Fayetteville Shale formation.

How deep are the injection wells and what formation are they storing the contaminated water in (is it even confined to one unit?)?

Also, to play devils advocate, the Faulkner County area has a precedent of naturally occuring, high frequency earthquake events (Enola Swarm) like this.

- Matt*

* I am not a geologist.