QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

5 km NNE of Dale, Oklahoma

· 7.1 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pottawatomie County 25 kmLincoln County 32 kmCleveland County 38 kmOklahoma County 38 kmSeminole County 48 kmMcClain County 61 kmOkfuskee County 62 kmLogan County 66 kmPayne 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 2.6 (ml)
Depth
7.1 km below the surface
Felt
no reports yet
Nearest
Pottawatomie County, 25 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3796 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 35.4357, -97.0111. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pottawatomie County, OK 25 km (16 mi) N of here earthquakes near Pottawatomie County
Lincoln County, OK 32 km (20 mi) SSW of here earthquakes near Lincoln County
Cleveland County, OK 38 km (24 mi) NE of here earthquakes near Cleveland County
Oklahoma County, OK 38 km (24 mi) ESE of here earthquakes near Oklahoma County
Seminole County, OK 48 km (30 mi) NW of here earthquakes near Seminole County
McClain County, OK 61 km (38 mi) NE of here earthquakes near McClain County

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

Aftershocks so far

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

  1. 3.6 7 km ENE of Harrah, Oklahoma
  2. 2.5 7 km ENE of Harrah, Oklahoma
  3. 2.8 7 km ENE of Harrah, Oklahoma
  4. 2.5 2 km E of Luther, Oklahoma
  5. 3.0 7 km W of Cromwell, Oklahoma
  6. 2.5 10 km NNW of Arcadia, Oklahoma
  7. 1.9 7 km ENE of Edmond, Oklahoma
  8. 2.6 8 km NNW of Arcadia, Oklahoma
  9. 2.6 1 km E of Luther, Oklahoma
  10. 2.6 2 km NE of Luther, Oklahoma
  11. 2.6 2 km SW of Jones, Oklahoma
  12. 3.1 7 km N of Spencer, Oklahoma
  13. 2.0 2 km E of Luther, Oklahoma
  14. 2.8 1 km ESE of Luther, Oklahoma
  15. 2.8 3 km E of Luther, 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 2016-01-01 — 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.