QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

9 km SSW of Washington, Oklahoma

· 5.7 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McClain County 9 kmCleveland County 31 kmGrady County 32 kmGarvin County 37 kmPottawatomie County 59 kmStephens County 63 kmOklahoma County 64 kmMurray County 71 kmCanadian County 73 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 2.5 (ml)
Depth
5.7 km below the surface
Felt
no reports yet
Nearest
McClain County, 9 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2917 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 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 34.9893, -97.5405. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McClain County, OK 9 km (5 mi) WSW of here earthquakes near McClain County
Cleveland County, OK 31 km (19 mi) SW of here earthquakes near Cleveland County
Grady County, OK 32 km (20 mi) E of here earthquakes near Grady County
Garvin County, OK 37 km (23 mi) NNW of here earthquakes near Garvin County
Pottawatomie County, OK 59 km (36 mi) WSW of here earthquakes near Pottawatomie County
Stephens County, OK 63 km (39 mi) NNE of here earthquakes near Stephens County

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

Aftershocks so far

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

  1. 2.3 7 km WSW of Tuttle, Oklahoma
  2. 2.3 1 km NW of Wayne, Oklahoma
  3. 2.3 5 km WSW of Tuttle, Oklahoma
  4. 2.1 6 km WSW of Tuttle, Oklahoma
  5. 2.1 6 km WSW of Tuttle, Oklahoma
  6. 2.3 5 km SW of Tuttle, Oklahoma
  7. 2.8 4 km S of Minco, Oklahoma
  8. 2.4 5 km SW of Tuttle, Oklahoma
  9. 2.5 6 km SSW of Blanchard, Oklahoma
  10. 2.7 4 km W of Bridge Creek, Oklahoma
  11. 3.0 4 km W of Bridge Creek, Oklahoma
  12. 3.0 0 km SE of Dibble, Oklahoma
  13. 2.8 1 km SE of Dibble, Oklahoma
  14. 2.3 1 km E of Dibble, Oklahoma
  15. 2.4 4 km ENE of Tuttle, 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.