Yet another thread coming back from the depths. :-)

2010 finished out a pretty active year with with well over 200 earthquakes in the state, including the 2nd strongest in recorded history on October 13th of a 4.7 magnitude in the Norman/Noble area.

The Oklahoma Geological Survey has been updating their website with a ton of new features. http://www.okgeosurvey1.gov/

One of the best pages is the Recent Earthquake report: http://www.okgeosurvey1.gov/pages/earthquakes/recent-earthquakes.php

This map is updated with all earthquakes recording by the monitoring sites in Oklahoma, and most of these quakes do not register on the USGS site.

Also added is the catalogs page that has documented all (recorded) earthquakes in Oklahoma since 1897, even though most monitoring didn't start until about 50 years ago. http://www.okgeosurvey1.gov/pages/earthquakes/catalogs.php

Some important links...
2010 Catalog: http://wichita.ogs.ou.edu/scripts/catalogs/list?year=2010
2010 Map: http://wichita.ogs.ou.edu/scripts/maps/yearmap?year=2010

2011 Catalog: http://wichita.ogs.ou.edu/scripts/catalogs/list?year=2011
2011 Map: http://wichita.ogs.ou.edu/scripts/maps/yearmap?year=2011 (may not yet be working)

USGS Central & Eastern Oklahoma Map
http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/US10/32.42.-100.-90.gif

USGS Central & Western Oklahoma Map
http://earthquake.usgs.gov/eqcenter/recenteqsus/Maps/US10/32.42.-105.-95.gif

2010 finished out a pretty active year with with well over 200 earthquakes in the state, including the 2nd strongest in recorded history on October 13th of a 4.7 magnitude in the Norman/Noble area.

That is defiantly up from our average of 50 with only around 2 reported as felt per year.

David, thank you for taking the time to lay this all out for us. We really appreciate for all that you have done on here. The resources and insight you provide is very much appreciated. Thank you!

Arkansas continues to experience a pretty consistent earthquake swarm. Here is a story from USGS on it:

http://www.usgs.gov/newsroom/article.asp?ID=2706&from=rss_home

Not Oklahoma, but definitely in our neighborhood. Of course the big news tonight is the major earthquakes out in the South Pacific, especially the major one in Christchurch, NZ.

http://www.youtube.com/watch?v=-2hwBgRtBjQ

The earthquake wasn't too kind to some historic structures. I wonder if they just have to demolish them.

Little jolt this morning for people on the east side. This is the first 3.0+ magnitude tremor we've had since mid-January.

Magnitude: 3.2
Date-Time: Friday, March 11, 2011 at 10:56:23 UTC | Friday, March 11, 2011 at 04:56:23 AM at epicenter
Location: 35.496°N, 97.090°W
Depth: 4.7 km (2.9 miles) set by location program
OKLAHOMA
9 km (6 miles) ENE (75°) from Harrah, OK
9 km (6 miles) N (5°) from McLoud, OK
16 km (10 miles) E (84°) from Choctaw, OK
22 km (14 miles) NW (320°) from Shawnee, OK
40 km (25 miles) E (88°) from Oklahoma City, OK
301 km (187 miles) N (355°) from Dallas, TX

Felt one just now around 12:50 AM near the OUHSC area while in bed.

Felt one just now around 12:50 AM near the OUHSC area while in bed.

This should be the one: http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usc0006b0a.php
http://earthquake.usgs.gov/earthquakes/dyfi/events/us/c0006b0a/us/usc0006b0a_ciim.jpg

This should be the one: http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usc0006b0a.php
http://earthquake.usgs.gov/earthquakes/dyfi/events/us/c0006b0a/us/usc0006b0a_ciim.jpg

Lol yeah. First thing I did was check the twitter feeds and there were a few reports to confirm what I had felt. Like any good scientist, I submitted a "did you feel it?" report to the USGS. What do they use this data for anyways?

Venture, do you have a map graphing out all the quakes over the past few years toward now? I'd like to see a line graph connecting location to location to location and see what pattern is there. And compare to known fault lines and newly discovered fault lines. And at what depth underneath Oklahoma is the start of the magma chambers?

Try this site: http://www.okgeosurvey1.gov/

and here...

http://www.okgeosurvey1.gov/pages/earthquakes/catalogs.php

Looking at the OGS site, they are placing the 2.9 tremor in Midwest City, not way out east like the USGS site. Looks like just along Reno between Midwest Blvd and Air Depot.

Does the red star represent where the tremor occurred?

Does the red star represent where the tremor occurred?

Yes...at least according to USGS. OGS has it in Midwest City instead.

Yes...at least according to USGS. OGS has it in Midwest City instead.

Yeah, cause past Shawnee seems like a ways off for such a small earthquake to be felt all the way in Del City/Midwest City.

Try this site: http://www.okgeosurvey1.gov/

and here...

http://www.okgeosurvey1.gov/pages/earthquakes/catalogs.php

Thanks.

Did we just have one bout 10 mins ago? Felt the couch shake a bit. Gotta be an earthquake. Plz don't say that I'm crazy!

You're not crazy! I live in MWC and I felt it, my whole house shook! I felt the one on Tuesday as well. I called the PD to see if they had gotten any other calls and she said about 40 others so far.

You're not crazy Thunder, I felt it too!

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usb0006fej.php

You're not crazy Thunder, I felt it too!

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usb0006fej.php

Thank you! I was really scared! All those horror movies on AMC...

Did we just have one bout 10 mins ago? Felt the couch shake a bit. Gotta be an earthquake. Plz don't say that I'm crazy!

You're crazy either way man. Lol

You're crazy either way man. Lol

But you do love me. One more year then we go elope! :-D

To let you know, there was a 2nd one last night. The 2nd one was 3.5 magnitude.

http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usb0006fgu.php

That makes about three ~3 magnitude earthquakes in the same area in the last few weeks.

I didn't feel the second one.

Actually, if you look at this it shows several last night. The only ones that had a magnitude indicating large enough to be felt were at 6:24AM and at 9:18AM and were centered in the Spencer area. The others were mostly under magnitude 2 and would it would be very unsual for them to be felt.

http://www.okgeosurvey1.gov/pages/earthquakes/recent-earthquakes.php

Just had a STRONG earthquake here in far SW OKC. Strongest I've ever felt. Lasted about 25-30 seconds.

Rumble rumble.

I felt something up here in OKC/Edmond, too. I've never felt an earthquake, but my 2nd floor apt was shaking.

Still trying to get information on the earthquake we just had. OGS is down and nothing on USGS just yet.

I knew I wasn't the only one to feel that. It was strong enough to wake me up here in Midtown. A bit scary since I'm in the third floor of an old building.

Magnitude
4.7
Date-Time
Saturday, November 05, 2011 at 07:12:45 UTC
Saturday, November 05, 2011 at 02:12:45 AM at epicenter
Location
35.570°N, 96.703°W
Depth
4.9 km (3.0 miles)
Region
OKLAHOMA
Distances
9 km (6 miles) N (352°) from Prague, OK
11 km (7 miles) ESE (113°) from Sparks, OK
14 km (9 miles) WNW (300°) from Paden, OK
33 km (20 miles) NE (40°) from Shawnee, OK
76 km (47 miles) E (82°) from Oklahoma City, OK
308 km (192 miles) N (1°) from Dallas, TX
Location Uncertainty
horizontal +/- 12.9 km (8.0 miles); depth +/- 3 km (1.9 miles)
Parameters
NST=240, Nph=246, Dmin=90.2 km, Rmss=1.31 sec, Gp= 18°,
M-type=body wave magnitude (Mb), Version=9
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006k8b

http://earthquake.usgs.gov/earthquakes/dyfi/events/us/b0006k8b/us/usb0006k8b_ciim.jpg

Bump.....

I felt it in N OKC.

It took me a while to realize that was an earthquake. It sounded like someone opened a door in the house and a bunch of air rushed in and made the walls creak and crack. The ground only shook a little bit.

That was a first for me!

Bump......4.7

Yeppers, according to USGS.

Facebook just came alive!!! EVERYONE felt this thing. Tulsa, Stillwater, S OKC...

Arkansas, Kansas, Missouri reports as well.. wow.

http://earthquake.usgs.gov/earthquakes/pager/events/us/b0006k8b/index.html

Some interesting info there.

http://earthquake.usgs.gov/earthquakes/pager/events/us/b0006k8b/index.html

Some interesting info there.

According to this chart from OK Geo Survey....this 4.7 ties for the second biggest in Oklahoma history - or, at least since seismic recording.

http://www.okgeosurvey1.gov/media/eqcatalogs/Slide19.jpg

Magnitude
3.4
Date-Time
Saturday, November 05, 2011 at 07:27:20 UTC
Saturday, November 05, 2011 at 02:27:20 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.566°N, 96.698°W
Depth
5 km (3.1 miles) (poorly constrained)
Region
OKLAHOMA
Distances
33 km (20 miles) NE of Shawnee, Oklahoma
67 km (41 miles) W of Okmulgee, Oklahoma
68 km (42 miles) SSE of Stillwater, Oklahoma
75 km (46 miles) E of OKLAHOMA CITY, Oklahoma
Location Uncertainty
horizontal +/- 11.7 km (7.3 miles); depth +/- 9.4 km (5.8 miles)
Parameters
Nph= 0, Dmin=0 km, Rmss=1.23 sec, Gp= 0,
M-type="Nuttli" surface wave magnitude (mbLg), Version=4
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006k9x

Magnitude
3.4
Date-Time
Saturday, November 05, 2011 at 07:27:20 UTC
Saturday, November 05, 2011 at 02:27:20 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.566°N, 96.698°W
Depth
5 km (3.1 miles) (poorly constrained)
Region
OKLAHOMA
Distances
33 km (20 miles) NE of Shawnee, Oklahoma
67 km (41 miles) W of Okmulgee, Oklahoma
68 km (42 miles) SSE of Stillwater, Oklahoma
75 km (46 miles) E of OKLAHOMA CITY, Oklahoma
Location Uncertainty
horizontal +/- 11.7 km (7.3 miles); depth +/- 9.4 km (5.8 miles)
Parameters
Nph= 0, Dmin=0 km, Rmss=1.23 sec, Gp= 0,
M-type="Nuttli" surface wave magnitude (mbLg), Version=4
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006k9x

So, there were two quakes over 4.0 fifteen minutes apart?

The 2nd is a 3.4, aftershock of the first one.

The 2nd is a 3.4, aftershock of the first one.

Where did I get that 4.0? Probably because it's 3:20 in the morning. Thanks for the clarification!

Probably the biggest shaker in the metro area in the lifetime of anybody under 60.

Well damn,I did'nt feel it but oddly enough I've been up since that time,so I think it shook me out of bed?

Magnitude
2.7
Date-Time
Saturday, November 05, 2011 at 07:44:34 UTC
Saturday, November 05, 2011 at 02:44:34 AM at epicenter
Location
35.488°N, 96.755°W
Depth
5 km (3.1 miles)
Region
OKLAHOMA
Distances
6 km (4 miles) W (272°) from Prague, OK
11 km (6 miles) NE (42°) from Johnson, OK
13 km (8 miles) E (95°) from Meeker, OK
23 km (14 miles) NE (45°) from Shawnee, OK
71 km (44 miles) E (89°) from Oklahoma City, OK
299 km (186 miles) N (1°) from Dallas, TX
Location Uncertainty
horizontal +/- 14.9 km (9.3 miles); depth +/- 3.1 km (1.9 miles)
Parameters
NST= 12, Nph= 20, Dmin=99.1 km, Rmss=0.99 sec, Gp=115°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=3
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006kat

Quake #3....aftershock....2.7.... at 2:44am
http://earthquake.usgs.gov/earthquakes/recenteqsus/Quakes/usb0006kat.php

KOCO Livewire is active. Interesting how far away it was felt.
http://livewire.koco.com/Event/Live_Wire_Oklahoma_Earthquake

Venture, do you think this recent 4.7 relieved most of the stress that may have accumulated in that region or is it more to come?? From what I read about the Meers fault line (in no relation to the earthquakes around here), there was a potential big one several thousand years ago. It was estimated to be at least 7 or 8 magnitude. Think this may be a similar intracontinental fault area?

Venture, do you think this recent 4.7 relieved most of the stress that may have accumulated in that region or is it more to come?? From what I read about the Meers fault line (in no relation to the earthquakes around here), there was a potential big one several thousand years ago. It was estimated to be at least 7 or 8 magnitude. Think this may be a similar intracontinental fault area?

It is pretty late, so my mind isn't quite with it. I want to say this is the same fault line that we had the 4.6 (or whatever it was finalized at) about a year ago. If that is that case, could estimate that we are going to see this remain pretty common to have the hundreds of smaller 3.0 or less quakes every year. Then once a year or so have a large 4.0 or higher that comes around. Of course, I'm not the expert when it comes to this. We could very well see this take care of things for awhile or it could build us stress elsewhere on the fault.

From the ok geo survey: http://www.okgeosurvey1.gov/

Preliminary Earthquake Report, November 5, 2011

Contacts: Austin Holland or Amie Gibson, Oklahoma Geological Survey, (Email Us)

On November 5, 2011 at 2:12 AM CDT (07:12:45.4 UTC) an earthquake occurred in Lincoln County, Oklahoma. The earthquake occurred about 6 miles northwest of Prague and 5.2 miles southeast of Sparks. The OGS determined a ML magnitude of 4.8 and the USGS currently has it at a magnitude 4.7 (Mb) these two numbers are essentially the same given the errors in calculating magnitude. Both the USGS and the OGS have determined a magnitude 5.2 mbLg for this event. This earthquake occurred very close to where a magnitude 4.3 earthquake occurred on February 27, 2010. From the location of the earthquake and the focal mechanism it is most likely that this earthquake occurred on the Wilzetta fault also known as the Seminole uplift. As of 3:30 AM CDT on 11/5/11 the OGS has received a few hundred reports.

We will be updating this page as we get more information so please check back.

KOCO Livewire is active. Interesting how far away it was felt.
http://livewire.koco.com/Event/Live_Wire_Oklahoma_Earthquake

Peaked in on it, typical crack pots at work over this again. I really need to get ChatOKC going again. LOL Weekend project I think.

Magnitude
2.7
Date-Time
Saturday, November 05, 2011 at 07:50:42 UTC
Saturday, November 05, 2011 at 02:50:42 AM at epicenter
Location
35.559°N, 96.762°W
Depth
4.8 km (3.0 miles)
Region
OKLAHOMA
Distances
8 km (5 miles) SE (137°) from Sparks, OK
11 km (7 miles) NW (320°) from Prague, OK
14 km (9 miles) ENE (61°) from Meeker, OK
29 km (18 miles) NNE (33°) from Shawnee, OK
70 km (44 miles) E (83°) from Oklahoma City, OK
307 km (191 miles) N (0°) from Dallas, TX
Location Uncertainty
horizontal +/- 13.4 km (8.3 miles); depth +/- 3 km (1.9 miles)
Parameters
NST= 13, Nph= 18, Dmin=95.7 km, Rmss=0.57 sec, Gp=119°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=3
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006kbh

Magnitude
3.3
Date-Time
Saturday, November 05, 2011 at 09:12:11 UTC
Saturday, November 05, 2011 at 04:12:11 AM at epicenter
Location
35.591°N, 96.788°W
Depth
4.9 km (3.0 miles)
Region
OKLAHOMA
Distances
4 km (2 miles) SE (126°) from Sparks, OK
13 km (8 miles) S (189°) from Davenport, OK
14 km (9 miles) NE (43°) from Meeker, OK
31 km (19 miles) NNE (26°) from Shawnee, OK
69 km (43 miles) E (80°) from Oklahoma City, OK
310 km (193 miles) N (360°) from Dallas, TX
Location Uncertainty
horizontal +/- 13.8 km (8.6 miles); depth +/- 3.1 km (1.9 miles)
Parameters
NST= 26, Nph= 29, Dmin=96.8 km, Rmss=0.57 sec, Gp= 58°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006kbv

Lovely morning!

I think there was one last night around 230am. I woke up to my house making a creaking noise and i could feel my bed shake a bit. It's not showing up on the geological survery site, but I felt it. So i'm wondering if they don't update in real time or if they didn't detect it. If they didn't detect it then they need to check their equipment.

My dogs started barking sometime during the night but I didn't feel anything.... must have been that pillow top mattress lol

I felt it the first one but slept through the aftershocks.

Three more aftershocks since my last post.

Magnitude
3.3
Date-Time
Saturday, November 05, 2011 at 11:24:15 UTC
Saturday, November 05, 2011 at 06:24:15 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.521°N, 96.778°W
Depth
5 km (3.1 miles)
Region
OKLAHOMA
Distances
25 km (15 miles) NNE of Shawnee, Oklahoma
67 km (41 miles) E of OKLAHOMA CITY, Oklahoma
68 km (42 miles) ENE of Norman, Oklahoma
70 km (43 miles) SE of Guthrie, Oklahoma
Location Uncertainty
horizontal +/- 12.6 km (7.8 miles); depth +/- 3.1 km (1.9 miles)
Parameters
NST= 26, Nph= 34, Dmin=99.1 km, Rmss=0.69 sec, Gp= 58°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=7
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006kcn

Magnitude
3.4
Date-Time
Saturday, November 05, 2011 at 13:42:26 UTC
Saturday, November 05, 2011 at 08:42:26 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.530°N, 96.766°W
Depth
5 km (3.1 miles) (poorly constrained)
Region
OKLAHOMA
Distances
26 km (16 miles) NNE of Shawnee, Oklahoma
68 km (42 miles) E of OKLAHOMA CITY, Oklahoma
69 km (42 miles) ENE of Norman, Oklahoma
70 km (43 miles) SSE of Stillwater, Oklahoma
Location Uncertainty
horizontal +/- 15.7 km (9.8 miles); depth +/- 10.8 km (6.7 miles)
Parameters
Nph= 0, Dmin=0 km, Rmss=1.6 sec, Gp= 0,
M-type="Nuttli" surface wave magnitude (mbLg), Version=D
Source
Magnitude: USGS NEIC (WDCS-D)
Location: Oklahoma Geological Survey, Leonard, USA
Event ID
usb0006kdk

Magnitude
3.6
Date-Time
Saturday, November 05, 2011 at 14:36:30 UTC
Saturday, November 05, 2011 at 09:36:30 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.584°N, 96.789°W
Depth
4.9 km (3.0 miles)
Region
OKLAHOMA
Distances
30 km (18 miles) NNE of Shawnee, Oklahoma
64 km (39 miles) SSE of Stillwater, Oklahoma
66 km (41 miles) ESE of Guthrie, Oklahoma
67 km (41 miles) E of OKLAHOMA CITY, Oklahoma
Location Uncertainty
horizontal +/- 13.6 km (8.5 miles); depth +/- 3.1 km (1.9 miles)
Parameters
NST= 25, Nph= 26, Dmin=96.8 km, Rmss=0.75 sec, Gp= 58°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=5
Source
Magnitude: USGS NEIC (WDCS-D)
Location: USGS NEIC (WDCS-D)
Event ID
usb0006kdy

We felt it at our operations office at the airport. There were three of us in the office when one of the windows rattled for about 5-6 seconds and we felt our chairs vibrate a little.

Cool stuff.

Looks like tectonic plates opening up and should be expecting more stronger quakes over next few months! =-O