QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Oklahoma

Yes. A magnitude 2.1 earthquake was recorded in Oklahoma, 53 km (33 mi) WSW of Oklahoma City, OK, at 11:35 am CST on 6 December 2022 (17:35 UTC), 7.3 km deep.

53 km (33 mi) WSW of Oklahoma City, OK · 52 km (32 mi) W of Moore, OK

· 7.3 km deep · released about 49 lb of TNT

10 km30 km60 km120 km N Grady County 29 kmCaddo County 33 kmCanadian County 33 kmMcClain County 59 kmCleveland County 65 kmOklahoma County 66 kmComanche County 77 kmKingfisher County 78 kmBlaine County 78 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.1 (ml)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
Grady County, 29 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1436 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 29 km (18 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Minco 11 km, intensity II · Union City 18 km, intensity II · Tuttle 21 km, intensity II · Chickasha 24 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 49 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 35.2497, -98.0350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Grady County, OK 29 km (18 mi) SSE earthquakes near Grady County
Caddo County, OK 33 km (20 mi) WSW earthquakes near Caddo County
Canadian County, OK 33 km (21 mi) N earthquakes near Canadian County
McClain County, OK 59 km (37 mi) ESE earthquakes near McClain County
Cleveland County, OK 65 km (40 mi) E earthquakes near Cleveland County
Oklahoma County, OK 66 km (41 mi) ENE earthquakes near Oklahoma County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

58 earthquakes have been recorded within 50 km since this one.

  1. 1.8 2 km N of Cole, Oklahoma
  2. 2.0 10 km SSE of Calumet, Oklahoma
  3. 1.7 9 km SSE of Calumet, Oklahoma
  4. 1.7 9 km SSE of Calumet, Oklahoma
  5. 1.6 9 km SSE of Calumet, Oklahoma
  6. 1.7 3 km N of Cole, Oklahoma
  7. 1.8 3 km N of Cole, Oklahoma
  8. 1.5 3 km NNW of Cole, Oklahoma
  9. 2.3 9 km SSE of Calumet, Oklahoma
  10. 1.8 10 km WSW of El Reno, Oklahoma
  11. 1.7 12 km S of Calumet, Oklahoma
  12. 1.5 11 km SSE of Calumet, Oklahoma
  13. 1.8 2 km SSE of Union City, Oklahoma
  14. 1.7 10 km SSE of Calumet, Oklahoma
  15. 2.4 Oklahoma

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.