QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

4 km NNE of Calvin, Oklahoma

· 5.0 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hughes County 5 kmSeminole County 37 kmPittsburg County 45 kmCoal County 48 kmOkfuskee County 51 kmPontotoc County 53 kmMcIntosh County 65 kmPottawatomie County 69 kmAtoka County 71 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 2.3 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Hughes County, 5 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2648 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 82 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 35.0102, -96.2360. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hughes County, OK 5 km (3 mi) SSE of here earthquakes near Hughes County
Seminole County, OK 37 km (23 mi) ESE of here earthquakes near Seminole County
Pittsburg County, OK 45 km (28 mi) WNW of here earthquakes near Pittsburg County
Coal County, OK 48 km (30 mi) N of here earthquakes near Coal County
Okfuskee County, OK 51 km (32 mi) S of here earthquakes near Okfuskee County
Pontotoc County, OK 53 km (33 mi) NE of here earthquakes near Pontotoc County

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

Aftershocks so far

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

  1. 1.6 5 km NE of Centrahoma, Oklahoma
  2. 1.7 5 km NE of Centrahoma, Oklahoma
  3. 1.7 5 km NNE of Centrahoma, Oklahoma
  4. 2.0 5 km NE of Centrahoma, Oklahoma
  5. 1.6 6 km NNE of Centrahoma, Oklahoma
  6. 2.4 4 km NNE of Centrahoma, Oklahoma
  7. 1.9 4 km NNE of Centrahoma, Oklahoma
  8. 2.2 4 km NE of Centrahoma, Oklahoma
  9. 1.6 3 km N of Lamar, Oklahoma
  10. 2.5 4 km ESE of Lamar, Oklahoma
  11. 1.5 5 km N of Lamar, Oklahoma
  12. 2.0 5 km N of Lamar, Oklahoma
  13. 1.6 5 km N of Lamar, Oklahoma
  14. 2.0 5 km NNE of Lamar, Oklahoma
  15. 2.0 6 km N of Lamar, 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.