QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

4 km NE of Centrahoma, Oklahoma

· 6.3 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coal County 7 kmPontotoc County 36 kmAtoka County 38 kmHughes County 46 kmJohnston County 48 kmPittsburg County 61 kmSeminole County 63 kmMurray County 71 kmBryan County 75 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
Magnitude
M 2.1 (ml)
Depth
6.3 km below the surface
Felt
no reports yet
Nearest
Coal County, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1773 days ago

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

How big was it?

This earthquake released about 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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.

Where

Epicentre 34.6397, -96.3157. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coal County, OK 7 km (4 mi) NNW of here earthquakes near Coal County
Pontotoc County, OK 36 km (22 mi) ESE of here earthquakes near Pontotoc County
Atoka County, OK 38 km (23 mi) NW of here earthquakes near Atoka County
Hughes County, OK 46 km (29 mi) S of here earthquakes near Hughes County
Johnston County, OK 48 km (30 mi) NE of here earthquakes near Johnston County
Pittsburg County, OK 61 km (38 mi) WSW of here earthquakes near Pittsburg County

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

Aftershocks so far

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

  1. 1.5 6 km SSE of Calvin, Oklahoma
  2. 1.5 6 km SSE of Calvin, Oklahoma
  3. 1.9 5 km SE of Calvin, Oklahoma
  4. 2.5 2 km ENE of Wardville, Oklahoma
  5. 1.9 1 km SSW of Lehigh, Oklahoma
  6. 1.6 7 km S of Wapanucka, Oklahoma
  7. 1.6 2 km S of Lehigh, Oklahoma
  8. 1.5 8 km SSE of Ada, Oklahoma
  9. 1.8 7 km SW of Ada, Oklahoma
  10. 1.6 6 km SSW of Ada, Oklahoma
  11. 1.6 5 km NNE of Sasakwa, Oklahoma
  12. 1.6 6 km SW of Ada, Oklahoma
  13. 1.6 10 km SSE of Wapanucka, Oklahoma
  14. 1.6 7 km ESE of Arpelar, Oklahoma
  15. 1.5 8 km NNE of Stonewall, 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.