Oklahoma Earthquake Activity

[kevinpate]

dinna notice nuttin' down here in Norman. Checked the telly; Hawaii friends seem as though they'll all be okie dokie as well.

Y'all can keep the shakin'. I don't wants it.

[venture]

Didn't feel anything in Moore during the time.

[venture]

From OGS:

Nine Earthquakes recorded in Canadian County: Several felt in Niles & Minco OK. 3/11/10 LATEST OKLAHOMA EARTHQUAKES!

The six largest earthquakes locations are very well constrained and on relocation we expect the magnitude 2.1 earthquake to centered with the cluster. The cluster of six earthquakes is 7 miles west of Union City Oklahoma in Canadian County near the border with both Grady and Caddo Counties. The cluster is about 11 miles SSW of El Reno.

2010 MAR 11 07:41:31 CANADIAN 2.1 35.277N 98.019W 2.7km

2010 MAR 11 08:11:01 CANADIAN F 3.0 35.378N 98.046W 5.0km

2010 MAR 11 09:45:19 CANADIAN F 2.8 35.398N 98.072W 2.3km

2010 MAR 11 10:00:56 CANADIAN F 2.7 35.4 98.1 5.0km

2010 MAR 11 10:06:10 CANADIAN F 2.7 35.384N 98.069W 2.5km

2010 MAR 11 10:54:25 CANADIAN F 3.0 35.401N 98.062W 5.0km

2010 MAR 11 13:15:17 CANADIAN F 2.9 35.388N 98.078W 3.2km

[venture]

Magnitude
3.1
Date-Time
Saturday, March 13, 2010 at 09:02:44 UTC
Saturday, March 13, 2010 at 03:02:44 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.398°N, 98.069°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
14 km (9 miles) NW (310°) from Minco, OK
14 km (9 miles) W (263°) from Union City, OK
18 km (11 miles) SW (215°) from El Reno, OK
49 km (31 miles) W (259°) from Oklahoma City, OK
312 km (194 miles) NNW (338°) from Dallas, TX
Location Uncertainty
horizontal +/- 9.1 km (5.7 miles); depth fixed by location program
Parameters
NST= 12, Nph= 12, Dmin=32.4 km, Rmss=1.15 sec, Gp=115°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=7

[venture]

Magnitude
2.4
Date-Time
Friday, March 19, 2010 at 22:07:27 UTC
Friday, March 19, 2010 at 05:07:27 PM at epicenter
Time of Earthquake in other Time Zones
Location
35.554°N, 97.473°W
Depth
10 km (6.2 miles) set by location program
Region
OKLAHOMA CITY URBAN AREA, OKLAHOMA
Distances
3 km (2 miles) NW (318°) from Lake Aluma, OK
6 km (3 miles) NNW (340°) from Forest Park, OK
6 km (4 miles) E (82°) from Nichols Hills, OK
10 km (6 miles) NE (35°) from Oklahoma City, OK
313 km (194 miles) N (349°) from Dallas, TX
Location Uncertainty
horizontal +/- 10.7 km (6.6 miles); depth fixed by location program
Parameters
NST= 7, Nph= 7, Dmin=31.4 km, Rmss=1.01 sec, Gp=112°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=8

[venture]

Magnitude
3.8
Date-Time
Monday, March 22, 2010 at 02:37:18 UTC
Sunday, March 21, 2010 at 09:37:18 PM at epicenter
Time of Earthquake in other Time Zones
Location
35.542°N, 96.737°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
8 km (5 miles) NW (324°) from Prague, OK
11 km (7 miles) SE (135°) from Sparks, OK
15 km (10 miles) ENE (71°) from Meeker, OK
28 km (18 miles) NE (39°) from Shawnee, OK
73 km (45 miles) E (85°) from Oklahoma City, OK
305 km (190 miles) N (1°) from Dallas, TX
Location Uncertainty
horizontal +/- 4.9 km (3.0 miles); depth fixed by location program
Parameters
NST= 38, Nph= 38, Dmin=41.7 km, Rmss=0.96 sec, Gp= 61°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=7
Source
USGS NEIC (WDCS-D)

[venture]

Two more today.

Magnitude
2.7
Date-Time
Monday, March 22, 2010 at 08:20:04 UTC
Monday, March 22, 2010 at 03:20:04 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.558°N, 96.822°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
6 km (4 miles) S (182°) from Sparks, OK
10 km (6 miles) NE (45°) from Meeker, OK
15 km (9 miles) WNW (303°) from Prague, OK
26 km (16 miles) NNE (23°) from Shawnee, OK
65 km (40 miles) E (82°) from Oklahoma City, OK
307 km (191 miles) N (359°) from Dallas, TX
Location Uncertainty
horizontal +/- 7.9 km (4.9 miles); depth fixed by location program
Parameters
NST= 13, Nph= 13, Dmin=70.1 km, Rmss=1.04 sec, Gp= 79°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source
USGS NEIC (WDCS-D)



Magnitude
2.8
Date-Time
Monday, March 22, 2010 at 09:18:51 UTC
Monday, March 22, 2010 at 04:18:51 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.590°N, 96.775°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
5 km (3 miles) ESE (118°) from Sparks, OK
13 km (8 miles) S (184°) from Davenport, OK
14 km (9 miles) NW (326°) from Prague, OK
31 km (19 miles) NNE (27°) from Shawnee, OK
70 km (43 miles) E (80°) from Oklahoma City, OK
310 km (193 miles) N (0°) from Dallas, TX
Location Uncertainty
horizontal +/- 5.8 km (3.6 miles); depth fixed by location program
Parameters
NST= 16, Nph= 16, Dmin=72.5 km, Rmss=0.68 sec, Gp= 79°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=7

[venture]

Magnitude
2.3
Date-Time
Saturday, April 03, 2010 at 13:34:17 UTC
Saturday, April 03, 2010 at 08:34:17 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.504°N, 97.233°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
4 km (2 miles) NE (52°) from Choctaw, OK
5 km (3 miles) NW (305°) from Harrah, OK
9 km (5 miles) SE (142°) from Jones, OK
27 km (17 miles) E (85°) from Oklahoma City, OK
304 km (189 miles) N (352°) from Dallas, TX
Location Uncertainty
horizontal +/- 7.7 km (4.8 miles); depth fixed by location program
Parameters
NST= 8, Nph= 8, Dmin=44.9 km, Rmss=0.45 sec, Gp=108°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source
USGS NEIC (WDCS-D)



Magnitude
2.2
Date-Time
Saturday, April 03, 2010 at 13:52:16 UTC
Saturday, April 03, 2010 at 08:52:16 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.500°N, 97.119°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
6 km (4 miles) ENE (66°) from Harrah, OK
10 km (6 miles) N (349°) from McLoud, OK
14 km (8 miles) E (82°) from Choctaw, OK
24 km (15 miles) NW (316°) from Shawnee, OK
38 km (23 miles) E (87°) from Oklahoma City, OK
302 km (188 miles) N (354°) from Dallas, TX
Location Uncertainty
horizontal +/- 7.2 km (4.5 miles); depth fixed by location program
Parameters
NST= 9, Nph= 9, Dmin=51.8 km, Rmss=0.56 sec, Gp= 86°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source
USGS NEIC (WDCS-D)
Event ID
us2010uqat

[venture]

Magnitude
3.2
Date-Time
Thursday, April 08, 2010 at 12:42:42 UTC
Thursday, April 08, 2010 at 07:42:42 AM at epicenter
Time of Earthquake in other Time Zones
Location
35.531°N, 97.308°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
4 km (2 miles) SSW (203°) from Jones, OK
5 km (3 miles) NNE (22°) from Nicoma Park, OK
6 km (4 miles) ENE (65°) from Spencer, OK
21 km (13 miles) ENE (75°) from Oklahoma City, OK
308 km (191 miles) N (351°) from Dallas, TX
Location Uncertainty
horizontal +/- 10 km (6.2 miles); depth fixed by location program
Parameters
NST= 10, Nph= 10, Dmin=38.6 km, Rmss=1.29 sec, Gp= 76°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=6
Source
USGS NEIC (WDCS-D)
Event ID
us2010uvbj

[venture]

Magnitude
2.8
Date-Time
Saturday, April 10, 2010 at 02:49:29 UTC
Friday, April 09, 2010 at 09:49:29 PM at epicenter
Time of Earthquake in other Time Zones
Location
35.504°N, 97.306°W
Depth
5 km (3.1 miles) set by location program
Region
OKLAHOMA
Distances
2 km (2 miles) NE (55°) from Nicoma Park, OK
4 km (3 miles) NW (305°) from Choctaw, OK
6 km (4 miles) E (94°) from Spencer, OK
21 km (13 miles) E (83°) from Oklahoma City, OK
305 km (189 miles) N (351°) from Dallas, TX
Location Uncertainty
horizontal +/- 8.5 km (5.3 miles); depth fixed by location program
Parameters
NST= 13, Nph= 13, Dmin=41.4 km, Rmss=1.31 sec, Gp= 76°,
M-type="Nuttli" surface wave magnitude (mbLg), Version=7
Source
USGS NEIC (WDCS-D)
Event ID
us2010uxal

[Bunty]

Some details and graph at Oklahoma Earthquake Page

[venture]

Here is a map I've been keeping updated on Google. Gives an idea where all the quakes so far this year have been for the state.

Oklahoma Earthquakes 2010 - Google Maps

[Bunty]

At 4.4, it's kinda worrisome they're still prone to increase in intensity.

[jstanthrnme]

While I didn't feel today's quake, I sure noticed it. I was fishing at Lake Hefner, enjoying the weather, I noticed a series of waves. I was wondering what it could be, it looked like the wake of a boat, but there wasn't a passing boat. I get home from fishing, and see that there was a quake, and I put the two together. It's pretty interesting to actually see the physics of an earthquake. It was a mini-tsunami, I guess..

[dismayed]

While I didn't feel today's quake, I sure noticed it. I was fishing at Lake Hefner, enjoying the weather, I noticed a series of waves. I was wondering what it could be, it looked like the wake of a boat, but there wasn't a passing boat. I get home from fishing, and see that there was a quake, and I put the two together. It's pretty interesting to actually see the physics of an earthquake. It was a mini-tsunami, I guess..

That's really interesting. Yeah I guess it was!

[Bunty]

It looks like the Sparks 4.4 quake got downgraded to 4.1.

[Thunder]

It looks like the Sparks 4.4 quake got downgraded to 4.1.

They didn't want the quake to be known as the tied 2nd strongest quake in the state. It would cause panic and concern of what will happen next, especially with the recent mega quakes oversea.

The day is getting closer, we will have a 5.0+ in the state.

[venture]

They didn't want the quake to be known as the tied 2nd strongest quake in the state. It would cause panic and concern of what will happen next, especially with the recent mega quakes oversea.

The day is getting closer, we will have a 5.0+ in the state.

It is called being accurate. Look. I enjoy your enthusiasm that you bring to this thread and the weather thread, but it is time to pull back some. There comes a time to where posting inaccurate information for the sole purpose to get people worked up isn't very appropriate.

[Thunder]

It is called being accurate. Look. I enjoy your enthusiasm that you bring to this thread and the weather thread, but it is time to pull back some. There comes a time to where posting inaccurate information for the sole purpose to get people worked up isn't very appropriate.

Venture, I can express my opinion as I see fit. To me, that is what I believe is the reason they scaled it back. Tell me, did they have an equipment at the exact epic center? I'm interested to know how can they determine the scale and location? They had just brought in equipments for the Jones and surrounding areas. This one was further east.

[venture]

Venture, I can express my opinion as I see fit. To me, that is what I believe is the reason they scaled it back. Tell me, did they have an equipment at the exact epic center? I'm interested to know how can they determine the scale and location? They had just brought in equipments for the Jones and surrounding areas. This one was further east.

I have nothing wrong with opinions being expressed, but when they make accusations of falsifying scientific data...then it becomes out of bounds. I don't think there has been many earthquakes in this world that have seismographs at the exactly epicenter of each one. The only exception would probably be volcano monitoring equipment. However, there are numerous recording devices out there now - far above on the map below that we already had:

[Thunder]

Venture, share more. How are they able to scale it by .3 down?

[bandnerd]

Just like when they scaled down the May 3rd tornado--it was for accuracy, not for peace of mind.

Opinions are not always fact. Why you "think" they lowered the magnitude has nothing to do with why they really did it.

[mugofbeer]

I believe the Chile earthquake was first reported as an 8.2 or .3 and then later upped to an 8.8. I think the massive Indonesian quake a few years ago was first reported a little lower than it ended up being at 9.2. Thunder, revisions happen all the time.

[dismayed]

Yeah I think you're right. I was really surprised to learn that it isn't the Richter scale that they use anymore... it's been superseded by the "moment magnitude scale." It uses the same format numbers and is also a logarithm, but I guess it's more about movement and force per centimeter. So if they're measuring to those levels of accuracy I'd imagine that the M-number does get refined as more detail is sought.

[Thunder]

This isn't the only one. More to come.

== PRELIMINARY EARTHQUAKE REPORT ==



Region: OKLAHOMA
Geographic coordinates: 35.549N, 97.282W
Magnitude: 2.5 M
Depth: 5 km
Universal Time (UTC): 3 Mar 2010 04:35:17
Time near the Epicenter: 2 Mar 2010 22:35:17
Local standard time in your area: 3 Mar 2010 04:35:17

Location with respect to nearby cities:
2 km (1 miles) SSE (155 degrees) of Jones, OK
8 km (5 miles) N (350 degrees) of Choctaw, OK
8 km (5 miles) NNE (33 degrees) of Nicoma Park, OK
24 km (15 miles) ENE (72 degrees) of Oklahoma City, OK
309 km (192 miles) N (352 degrees) of Dallas, TX