QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

1 km ESE of Choctaw, Oklahoma

· 7.2 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Oklahoma County 15 kmCleveland County 32 kmLincoln County 41 kmPottawatomie County 41 kmLogan County 50 kmMcClain County 56 kmCanadian County 66 kmPayne County 70 kmSeminole County 70 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 2.6 (ml)
Depth
7.2 km below the surface
Felt
no reports yet
Nearest
Oklahoma County, 15 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3590 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 35.4929, -97.2573. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Oklahoma County, OK 15 km (10 mi) ESE of here earthquakes near Oklahoma County
Cleveland County, OK 32 km (20 mi) N of here earthquakes near Cleveland County
Lincoln County, OK 41 km (26 mi) SW of here earthquakes near Lincoln County
Pottawatomie County, OK 41 km (26 mi) NW of here earthquakes near Pottawatomie County
Logan County, OK 50 km (31 mi) SSE of here earthquakes near Logan County
McClain County, OK 56 km (35 mi) NNE of here earthquakes near McClain 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. 2.6 4 km SE of Harrah, Oklahoma
  2. 2.6 6 km W of Arcadia, Oklahoma
  3. 2.4 5 km ESE of Guthrie, Oklahoma
  4. 2.7 Oklahoma
  5. 2.5 3 km E of Luther, Oklahoma
  6. 2.6 6 km W of Arcadia, Oklahoma
  7. 2.6 6 km N of Fallis, Oklahoma
  8. 2.6 6 km W of Arcadia, Oklahoma
  9. 2.5 6 km W of Arcadia, Oklahoma
  10. 2.5 1 km SSW of Wellston, Oklahoma
  11. 3.3 Oklahoma
  12. 3.0 1 km ENE of Nicoma Park, Oklahoma
  13. 2.9 2 km E of Luther, Oklahoma
  14. 2.4 1 km SSW of Wellston, Oklahoma
  15. 2.5 7 km NNE of Lake Aluma, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2016-04-07 — it released about 250 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.