5.6 Magnitude Quake Strikes Oklahoma in U.S. - USGS

[Hissyspit]

Source: Reuters

5.2 magnitude quake strikes Oklahoma in US-USGS

NOV. 5 | Sun Nov 6, 2011 12:09am EDT

Nov. 5 (Reuters) -- A 5.2 magnitude earthquake struck near Oklahoma City in the U.S. Midwest, the U.S. Geological Survey reported on Saturday.

The USGS initially reported the quake as a 5.8 magnitude.

The quake was a shallow 3.1 miles (5 km ) deep and was centered 4 miles (6.4 km) east of Sparks, which is east of Oklahoma City.


Read more: http://mobile.reuters.com/article/idUSN1E7A409N20111106?irpc=932

---

http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/usb0006klz.php

Magnitude 5.6 - OKLAHOMA
2011 November 06 03:53:10 UTC

This event has been reviewed by a seismologist.
Magnitude
5.6
Date-Time
Sunday, November 06, 2011 at 03:53:10 UTC
Saturday, November 05, 2011 at 10:53:10 PM at epicenter
Time of Earthquake in other Time Zones
Location
35.599°N, 96.752°W
Depth
5 km (3.1 miles)
Region
OKLAHOMA
Distances
34 km (21 miles) NNE of Shawnee, Oklahoma
63 km (39 miles) SSE of Stillwater, Oklahoma
68 km (42 miles) ESE of Guthrie, Oklahoma
71 km (44 miles) ENE of OKLAHOMA CITY, Oklahoma
Location Uncertainty
horizontal +/- 13.9 km (8.6 miles); depth +/- 3 km (1.9 miles)
Parameters
NST=298, Nph=298, Dmin=208.2 km, Rmss=1.54 sec, Gp= 22°,
M-type=regional moment magnitude (Mw), Version=9
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006klz

[Behind the Aegis]

1. shook the house north of tulsa

didn't wake the puppies, but really shook the house, much more than last night/this morning.

[OKNancy]

2. woke me up!

I was just coming to look for any news... USGS says 5.2

[KatyaR]

3. Lordy, I didn't have a clue what was happening!

I thought my drunk neighbors were shaking the stairwells up to the second floor. But then I heard everybody running outside and yelling and finally figured out it wasn't them. I was almost ready to call the cops! LOL

5.2 centered at Sparks, OK, which is 40-some miles away from OKC. I expect we'll have aftershocks here soon....

Earthquake Details

This event has been reviewed by a seismologist.

Magnitude 5.2
Date-Time

Sunday, November 06, 2011 at 03:53:10 UTC
Saturday, November 05, 2011 at 10:53:10 PM at epicenter
Time of Earthquake in other Time Zones

Location 35.599°N, 96.751°W
Depth 5 km (3.1 miles)
Region OKLAHOMA
Distances 34 km (21 miles) NNE of Shawnee, Oklahoma
63 km (39 miles) SSE of Stillwater, Oklahoma
68 km (42 miles) ESE of Guthrie, Oklahoma
71 km (44 miles) ENE of OKLAHOMA CITY, Oklahoma
Location Uncertainty horizontal +/- 13.9 km (8.6 miles); depth +/- 3 km (1.9 miles)
Parameters NST=298, Nph=298, Dmin=208.2 km, Rmss=1.54 sec, Gp= 22°,
M-type=body wave magnitude (Mb), Version=9
Source

Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)

Event ID usb0006klz

[OKNancy]

4. New Madrid is not my fault

LOL

now saying it was a 5.6

[deminks]

5. I felt that one N of Topeka. Chair wobbled.

[valerief]

6. Fracking or drilling? nt

[Yo_Mama_Been_Loggin]

9. That was my thought.

[onecent]

21. My thoughts exactly and I live in Missouri. To close for

comfort..

[caseymoz]

24. Could be that. Could be natural. nt

[rayofreason]

36. No way.

Human activity (drilling, virgin sacrifice, etc.) has no impact on deep geologic processes driven by mantle convection.

[kestrel91316]

40. Wrong. We had a series of quakes along the Front Range in CO back in the 70s

that were clearly associated with some sort of well injecting or other subterranean human project, I have since forgotten. When it stopped, the quakes stopped.

[icymist]

7. Another earthquake shakes state; initial reports are that it is strongest in state history

A magnitude 5.6 earthquake -- the strongest in state history -- shook Oklahoma late Saturday night, less than 24 hours after a 4.8 quake shook the state.


The earthquake was centered north of Prague in Lincoln County, the same area as one that occurred at 2:12 a.m. Saturday, according to the United States Geological Survey. Prague is about 75 miles southwest of Tulsa.

Initial reports from EMSA and the Tulsa Police Department are that no major damage has been sustained in the Tulsa area.
http://www.tulsaworld.com/news/article.aspx?subjectid=11&articleid=20111105_11_0_Amgiue120028&rss_lnk=439

[jakeXT]

13. 5.5 in 1882 and 5.5 in 1952

If the intensity of the Saturday night quake is confirmed, it would be the state's strongest on record. USGS records show that a 5.5 magnitude earthquake struck El Reno, just west of Oklahoma City, in 1952 and, before Oklahoma became a state in 1907, a quake of similar magnitude 5.5 struck in northeastern Indian Territory in 1882.

Read more: http://www.foxnews.com/us/2011/11/06/52-magnitude-earthquake-strikes-oklahoma/?test=latestnews#ixzz1cuaheIZO

[RamboLiberal]

8. Paging Michele Bachmann - what is God telling OK?

Republican presidential candidate Rep. Michele Bachmann (Minn.) told supporters God was sending a message to Washington politicians through the earthquake and hurricane that pummeled the East Coast this weekend,

http://www.washingtonpost.com/blogs/under-god/post/michele-bachmann-jokes-that-god-sent-hurricane-earthquake/2011/08/29/gIQAUN6QnJ_blog.html

And I hope no damage to all from that area.

[onecent]

22. Why the hell do we have to have Religion in politics??????? n/t

[RamboLiberal]

41. Ask the Republicans

[icymist]

10. First reports of damage:

<snip>
Lincoln County Emergency Management is reporting significant damage in the southern parts of the county. In some cases chimneys have collapsed through the roofs of homes. Air conditioning ducts collapsed through the ceiling at the Prague library.

Several roadways have buckled, including Highway 62 near County Road 3470 and other county roads.

There has been no word on any injuries reported.


Read more: http://www.kjrh.com/dpp/news/local_news/strong-5.2-earthquake-rattles-oklahoma#ixzz1cttx70Iy

[McCamy Taylor]

11. Felt in Fort Worth, Texas. It's the fracking. Just wait till the natural gas lines break.

[rayofreason]

37. More unscientific hooey about fracking. n/t

[Tess49]

12. It certainly got my attention. I didn't feel the one that happened in

the middle of the night -- but this last one had my house swaying.

[jakeXT]

14. Are all these earthquakes unusual?

Are all these earthquakes unusual?

Yes the number of earthquakes felt in 2009 and 2010 are unusual. The frequency of earthquakes has temporarily increased in Oklahoma, these earthquakes do not appear to be inconsistent with what might be called normal seismicity for Oklahoma.

http://www.okgeosurvey1.gov/pages/earthquakes/information.php#FAQ%22

[Downwinder]

15. Keystone going to transit an earthquake zone?

[deminks]

16. 3.2 same area 2:32 am CST.

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usb0006kph.php

[OKNancy]

17. Map of fault lines in Oklahoma

The epicenter would be on the fault line just to the west of the number 10

[jakeXT]

19. They say it's on a fault

http://www.okgeosurvey1.gov/pages/home.php

[OKNancy]

20. yes, that is the one I pointed out in my post

I hate to go against the latest conspiracy of the day, but it has nothing to do with fracking.

[bvar22]

30. Just because its on a fault,

...doesn't exclude fracking as a cause or a contributing factor.

I agree with you that in all probably this is a naturally occurring event,
but will keep an open mind until this has been investigated.

[drokhole]

33. Exactly...

Some scientists think that the wastewater acts as a lubricant that reduces friction between underground rocks, allowing them to move more easily. When movement occurs on a sufficiently large scale, an earthquake results. Could be a combination of the fracturing of the crust elsewhere, the wastewater slickening things up, and natural geological pressures. Though, those natural geological pressures may not have resulted in an earthquake (or one of this severity) without the fracking.

[PuffedMica]

18. Got FRACK?

[rayofreason]

38. And yet more. n/t

[sendero]

23. I live in north TX..

... not far from OK. We had just gone to bed when the bed started shaking, wife asked me "are you shaking your leg"?

I sat up and I could feel it too, like the bed was rocking back and forth a couple times a second, gently, not really enough movement to be scary. It lasted about 5 seconds. I didn't really give it much thought, I was sleepy :)

[Arkansas Granny]

25. I felt it here in West Central AR (Fort Smith).

I was just dozing off last night when I felt the bed shaking. I thought it was the cat, but it lasted too long. Didn't know what caused it until this morning.

[CountAllVotes]

34. Ft. Smith, Arkansas!

:wow:

That is where my Indian relatives are from!

Sheesh!

5.6 is a fairly good sized quake.

Take it from an old San Franciscan that knows ... :scared:

:kick: & recommend!!

[cbdo2007]

26. Felt it here in Kansas City!! My first earthquake!!! I'm so excited :) Dog was acting weird...

and wife and I were laying in bed, dog went downstairs and we couldn't find her. Then the picture frame on the wall started shaking just barely. Wife didn't even feel it but I knew it was something strange and not just the dryer or heater like she thought it must have been.

[madokie]

27. 35 miles east of Tulsa

It shook our house enough to make the cups my wife has hanging under some cabinets sway back and forth. My clock said it was 6 minutes before 11PM when it happened. We were having a birthday party for my wife and her boss and we all go wow is that an earth quake. Most here had never felt an earthquake before like this one was as we don't have them here in Oklahoma very ofter. One last night and one the night before is really unusual.
I'd bet one of the gas companies are fracking in the area of the quakes as they were both pretty close to one another.

Myself I spent enough time in southern CA to know what an earth quake is

[Crowman1979]

28. Can you say fracking?

[dkofos]

29. I felt it in N Texas.

My first earthquake experience.

[Ilsa]

31. South Texas had an earthquake about 80 miles NW of Corpus Christi

several weeks ago, felt all the way up to San Antonio, even Austin. Lots of franking happening down here.

[Red1]

32. Wichita Felt It..

[AverageJoe90]

35. Come to think of it, I thought I felt my bed shaking a bit........

Rockwall/Dallas Co. border, TX.

[jakeXT]

39. The Causes of the Oklahoma Earthquake

Most earthquakes are associated with major seismic zones, where the giant plates which make up the earth’s crust move relative to one another. Although the Pacific coast of North America is associated with such plate boundaries, and is consequently earthquake-prone, the central and eastern parts of the continent are isolated from such zones and generally regarded as being tectonically stable.

Earthquakes which occur in such areas are not, therefore, related to such large-scale plate dynamics, but are caused by movement along faults in the underlying bedrock. Tremors occurring on such fault systems are typically both smaller and shallower than those occurring at major plate boundaries – as occurred in Oklahoma.

...

The USGS’s review of significant earthquakes in the state includes estimates of damage. No deaths have been recorded, and most events cause only minor damage – though it’s worth noting that although the tremors were relatively small in scale, the fact that they were felt so widely is typical of tremors east of the Rockies, where shaking is generally more widely felt than those to the west.

The reasons for this are complex, but the British Geological Survey’s Dr. Roger Musson told Decoded Science in a recent interview that a significant factor is the distance from major plate boundaries: in areas made up of older, colder continental rock, the seismic waves generated by an earthquake spread further before their energy is dissipated.

http://www.decodedscience.com/oklahoma-struck-by-m4-9-earthquake/5174