QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

4 km SE of Cole, Oklahoma

· 4.6 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McClain County 11 kmCleveland County 24 kmGrady County 33 kmGarvin County 46 kmOklahoma County 54 kmPottawatomie County 55 kmCanadian County 65 kmStephens County 73 kmCaddo 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
Magnitude
M 2.1 (ml)
Depth
4.6 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
McClain County, 11 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 753 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have 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 35.0807, -97.5350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McClain County, OK 11 km (7 mi) NW of here earthquakes near McClain County
Cleveland County, OK 24 km (15 mi) SW of here earthquakes near Cleveland County
Grady County, OK 33 km (20 mi) ENE of here earthquakes near Grady County
Garvin County, OK 46 km (29 mi) NNW of here earthquakes near Garvin County
Oklahoma County, OK 54 km (34 mi) SSW of here earthquakes near Oklahoma County
Pottawatomie County, OK 55 km (34 mi) WSW of here earthquakes near Pottawatomie County

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

Aftershocks so far

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

  1. 1.6 3 km NNW of Minco, Oklahoma
  2. 2.5 4 km E of Cole, Oklahoma
  3. 1.9 4 km E of Cole, Oklahoma
  4. 1.7 4 km E of Cole, Oklahoma
  5. 1.5 4 km ESE of Cole, Oklahoma
  6. 1.6 4 km NW of Washington, Oklahoma
  7. 2.6 10 km N of Alex, Oklahoma
  8. 1.9 3 km S of Union City, Oklahoma
  9. 2.1 10 km N of Alex, Oklahoma
  10. 2.5 11 km N of Alex, Oklahoma
  11. 2.6 11 km W of Dibble, Oklahoma
  12. 1.7 10 km N of Alex, Oklahoma
  13. 2.2 11 km N of Alex, Oklahoma
  14. 1.7 10 km N of Alex, Oklahoma
  15. 1.5 1 km ENE of Goldsby, 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.