QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Oklahoma

· 4.3 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McClain County 6 kmCleveland County 18 kmGarvin County 40 kmGrady County 43 kmPottawatomie County 45 kmOklahoma County 55 kmMurray County 71 kmCanadian County 74 kmSeminole 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
4.3 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
McClain County, 6 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1276 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 44 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 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 35.0583, -97.4142. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McClain County, OK 6 km (4 mi) NE of here earthquakes near McClain County
Cleveland County, OK 18 km (11 mi) SSW of here earthquakes near Cleveland County
Garvin County, OK 40 km (25 mi) NNW of here earthquakes near Garvin County
Grady County, OK 43 km (27 mi) E of here earthquakes near Grady County
Pottawatomie County, OK 45 km (28 mi) WSW of here earthquakes near Pottawatomie County
Oklahoma County, OK 55 km (34 mi) S of here earthquakes near Oklahoma County

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

Aftershocks so far

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

  1. 2.5 1 km N of Cole, Oklahoma
  2. 1.7 1 km N of Cole, Oklahoma
  3. 1.9 9 km SE of Erin Springs, Oklahoma
  4. 1.7 8 km ESE of Erin Springs, Oklahoma
  5. 1.7 1 km NNW of Cole, Oklahoma
  6. 1.7 3 km NE of Amber, Oklahoma
  7. 1.5 3 km NNE of Amber, Oklahoma
  8. 1.6 3 km NE of Amber, Oklahoma
  9. 1.7 3 km NNE of Amber, Oklahoma
  10. 1.9 2 km ENE of Amber, Oklahoma
  11. 1.6 3 km NNE of Amber, Oklahoma
  12. 1.6 2 km NNE of Amber, Oklahoma
  13. 1.9 2 km NNE of Amber, Oklahoma
  14. 2.4 1 km NE of Amber, Oklahoma
  15. 1.7 2 km NE of Amber, 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.