QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

2 km NNE of Dibble, Oklahoma

· 7.2 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N McClain County 16 kmGrady County 25 kmCleveland County 32 kmGarvin County 47 kmOklahoma County 59 kmPottawatomie County 63 kmCanadian County 64 kmStephens County 67 kmCaddo County 71 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 1.8 (ml)
Depth
7.2 km below the surface
Felt
no reports yet
Nearest
McClain County, 16 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 245 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.0500, -97.6185. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
McClain County, OK 16 km (10 mi) WNW of here earthquakes near McClain County
Grady County, OK 25 km (15 mi) E of here earthquakes near Grady County
Cleveland County, OK 32 km (20 mi) WSW of here earthquakes near Cleveland County
Garvin County, OK 47 km (29 mi) NW of here earthquakes near Garvin County
Oklahoma County, OK 59 km (37 mi) SSW of here earthquakes near Oklahoma County
Pottawatomie County, OK 63 km (39 mi) WSW of here earthquakes near Pottawatomie County

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

Aftershocks so far

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

  1. 1.8 6 km SE of Chickasha, Oklahoma
  2. 1.7 12 km NNE of Bray, Oklahoma
  3. 1.8 12 km NNE of Bray, Oklahoma
  4. 1.9 12 km NNE of Bray, Oklahoma
  5. 1.8 11 km NNE of Bray, Oklahoma
  6. 1.5 10 km NNE of Bray, Oklahoma
  7. 1.9 12 km NNE of Bray, Oklahoma
  8. 1.6 11 km NNE of Bray, Oklahoma
  9. 2.0 12 km NNE of Bray, Oklahoma
  10. 1.6 12 km NNE of Bray, Oklahoma
  11. 1.6 9 km SSE of Amber, Oklahoma
  12. 1.9 12 km NNE of Bray, Oklahoma
  13. 1.8 13 km NNE of Bray, Oklahoma
  14. 1.9 13 km NNE of Bray, Oklahoma
  15. 1.5 12 km NNE of Bray, 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.