QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

7 km NE of Harrah, Oklahoma

· 7.1 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Oklahoma County 26 kmLincoln County 28 kmPottawatomie County 40 kmCleveland County 42 kmLogan County 51 kmPayne County 61 kmSeminole County 63 kmMcClain County 66 kmOkfuskee County 72 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 (mb_lg)
Depth
7.1 km below the surface
Felt
no reports yet
Nearest
Oklahoma County, 26 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3260 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 85 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 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.5418, -97.1178. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Oklahoma County, OK 26 km (16 mi) E of here earthquakes near Oklahoma County
Lincoln County, OK 28 km (17 mi) SW of here earthquakes near Lincoln County
Pottawatomie County, OK 40 km (25 mi) NNW of here earthquakes near Pottawatomie County
Cleveland County, OK 42 km (26 mi) NNE of here earthquakes near Cleveland County
Logan County, OK 51 km (32 mi) SE of here earthquakes near Logan County
Payne County, OK 61 km (38 mi) SSW of here earthquakes near Payne County

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

Aftershocks so far

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

  1. 2.9 3 km E of Luther, Oklahoma
  2. 2.5 6 km ENE of Coyle, Oklahoma
  3. 2.7 5 km W of Arcadia, Oklahoma
  4. 2.6 3 km NNE of Dale, Oklahoma
  5. 2.5 3 km NW of Shawnee, Oklahoma
  6. 3.0 5 km W of Arcadia, Oklahoma
  7. 2.4 5 km W of Arcadia, Oklahoma
  8. 3.6 6 km W of Arcadia, Oklahoma
  9. 2.8 6 km ENE of Edmond, Oklahoma
  10. 2.7 7 km ENE of Guthrie, Oklahoma
  11. 2.2 5 km NE of Edmond, Oklahoma
  12. 2.5 4 km NE of Meridian, Oklahoma
  13. 2.3 1 km N of Jones, Oklahoma
  14. 2.5 4 km NNE of Dale, Oklahoma
  15. 2.4 5 km SE of Guthrie, 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 710 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.