Two more earthquakes associated with the Jones earthquake swarm occurred Friday morning (Jan. 15, 2010). Both earthquakes occurred near Jones in Oklahoma County. A magnitude 4.0 earthquake occurred at 9:18 this morning and was followed by a magnitude 3.8 at 9:27.
The larger earthquake (M 4.0) was felt through a large portion of central Oklahoma and some felt reports as far away as Tulsa.
The Oklahoma Geological Survey is in the process of installing instrumentation in order to gain a better understanding of these earthquakes. The additional instrumentation will help us to more precisely determine where the earthquakes are occurring and other important characteristics of these earthquakes which we cannot determine with the existing stations located in the state of Oklahoma.
We are compiling felt reports. Those who felt the earthquake are encouraged to go to the Oklahoma Geological Survey website at www.ogs.ou.edu. There we have links for those who felt the earthquake to provide us information on what they felt. These felt reports help scientists learn more about the earthquakes. Please fill out both the USGS and OGS forms linked on the website. We will post compiled felt reports on our website.
USGS Preliminary Locations: Region: OKLAHOMA
Geographic coordinates: 35.592N, 97.258W
Magnitude: 4.0 M
Depth: 5 km
Universal Time (UTC): 15 Jan 2010 15:18:25
Time near the Epicenter: 15 Jan 2010 09:18:25
Local standard time in your area: 15 Jan 2010 09:18:25
Location with respect to nearby cities:
4 km (3 miles) NE (45 degrees) of Jones, OK
10 km (6 miles) SE (143 degrees) of Arcadia, OK
10 km (6 miles) SW (218 degrees) of Luther, OK
28 km (17 miles) ENE (64 degrees) of Oklahoma City, OK
313 km (195 miles) N (352 degrees) of Dallas, TX
Region: OKLAHOMA
Geographic coordinates: 35.569N, 97.276W
Magnitude: 3.8 M
Depth: 5 km
Universal Time (UTC): 15 Jan 2010 15:27:01
Local standard time: 15 Jan 2010 09:27:01
Location with respect to nearby cities:
1 km (1 miles) ENE (71 degrees) of Jones, OK
10 km (6 miles) N (355 degrees) of Choctaw, OK
10 km (6 miles) NNE (29 degrees) of Nicoma Park, OK
25 km (16 miles) ENE (68 degrees) of Oklahoma City, OK
311 km (193 miles) N (352 degrees) of Dallas, TX
Report feeling an earthquake to Oklahoma Geological Survey
Above: Seismograph recordings from Oklahoma Geological Survey (above) and Hawaii of Magnitude 7.0 earthquake on Tuesday, January 12, 2010, at 4:53 p.m. at the epicenter, which was 10 miles southwest of Port-Au-Prince, Haiti.
For more information on the Haiti earthquake and earthquakes in that area go to:
or
OKLAHOMA EARTHQUAKES NEAR JONES
On average there are about 50 measurable earthquakes each year in Oklahoma with only a few of these having shaking strong enough to be felt. A total of 43 felt earthquakes in 2009 made this an exceptional year for seismic activity in Oklahoma. Twenty-seven of the felt earthquakes occurred in Oklahoma County, and another 7 were located in Lincoln County.
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