QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

6 km NNW of Lindsay, Oklahoma

· 9.8 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McClain County 21 kmGrady County 28 kmGarvin County 34 kmCleveland County 44 kmStephens County 51 kmMurray County 67 kmPottawatomie County 70 kmCaddo County 76 kmOklahoma County 76 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
9.8 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
McClain County, 21 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1844 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 51 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 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× 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 51 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 34.8920, -97.6180. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McClain County, OK 21 km (13 mi) SW of here earthquakes near McClain County
Grady County, OK 28 km (18 mi) ESE of here earthquakes near Grady County
Garvin County, OK 34 km (21 mi) NW of here earthquakes near Garvin County
Cleveland County, OK 44 km (27 mi) SW of here earthquakes near Cleveland County
Stephens County, OK 51 km (31 mi) NNE of here earthquakes near Stephens County
Murray County, OK 67 km (42 mi) NW of here earthquakes near Murray County

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

Aftershocks so far

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

  1. 2.4 0 km W of Cole, Oklahoma
  2. 1.6 2 km WSW of Cole, Oklahoma
  3. 2.7 8 km SSW of Alex, Oklahoma
  4. 1.6 1 km SW of Cole, Oklahoma
  5. 2.3 8 km SSW of Alex, Oklahoma
  6. 2.6 1 km W of Cole, Oklahoma
  7. 1.7 1 km SW of Cole, Oklahoma
  8. 1.6 8 km SSW of Alex, Oklahoma
  9. 1.7 6 km SSW of Alex, Oklahoma
  10. 2.1 11 km N of Lindsay, Oklahoma
  11. 2.0 9 km N of Lindsay, Oklahoma
  12. 2.0 1 km WNW of Bridge Creek, Oklahoma
  13. 1.7 1 km W of Bridge Creek, Oklahoma
  14. 2.3 9 km E of Chickasha, Oklahoma
  15. 2.3 7 km SE of Erin Springs, 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.