QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

4 km W of Lucien, Oklahoma

· 6.6 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 27 kmGarfield County 28 kmLogan County 41 kmPayne County 52 kmKingfisher County 53 kmGrant County 62 kmKay County 68 kmPawnee County 72 kmOklahoma County 81 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
6.6 km below the surface
Felt
no reports yet
Nearest
Noble County, 27 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2922 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 36.2793, -97.5044. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Noble County, OK 27 km (17 mi) WSW of here earthquakes near Noble County
Garfield County, OK 28 km (17 mi) ESE of here earthquakes near Garfield County
Logan County, OK 41 km (25 mi) N of here earthquakes near Logan County
Payne County, OK 52 km (33 mi) WNW of here earthquakes near Payne County
Kingfisher County, OK 53 km (33 mi) NE of here earthquakes near Kingfisher County
Grant County, OK 62 km (39 mi) SSE of here earthquakes near Grant County

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

Aftershocks so far

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

  1. 2.5 5 km W of Lucien, Oklahoma
  2. 2.7 0 km NNW of Douglas, Oklahoma
  3. 2.4 4 km E of Hennessey, Oklahoma
  4. 2.4 3 km SW of Lucien, Oklahoma
  5. 3.3 0 km SSW of Morrison, Oklahoma
  6. 2.5 1 km NNW of Fairmont, Oklahoma
  7. 2.5 1 km NNW of Fairmont, Oklahoma
  8. 2.5 5 km WNW of Lucien, Oklahoma
  9. 2.5 10 km W of Lamont, Oklahoma
  10. 2.5 4 km W of Lucien, Oklahoma
  11. 3.0 0 km NNE of Coyle, Oklahoma
  12. 2.7 4 km WNW of Lucien, Oklahoma
  13. 2.6 3 km W of Lucien, Oklahoma
  14. 2.5 5 km E of Hennessey, Oklahoma
  15. 2.7 10 km ESE of Jefferson, 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 4.6 on 2018-04-09 — it released about 1,400 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.