QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

8 km SE of Mulhall, Oklahoma

· 7.8 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Logan County 16 kmPayne County 32 kmNoble County 42 kmOklahoma County 52 kmLincoln County 53 kmKingfisher County 55 kmGarfield County 58 kmPawnee County 66 kmCanadian County 79 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 2.1 (ml)
Depth
7.8 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Logan County, 16 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 36.0180, -97.3280. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Logan County, OK 16 km (10 mi) NE of here earthquakes near Logan County
Payne County, OK 32 km (20 mi) WSW of here earthquakes near Payne County
Noble County, OK 42 km (26 mi) SSW of here earthquakes near Noble County
Oklahoma County, OK 52 km (32 mi) N of here earthquakes near Oklahoma County
Lincoln County, OK 53 km (33 mi) NW of here earthquakes near Lincoln County
Kingfisher County, OK 55 km (34 mi) E of here earthquakes near Kingfisher County

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

Aftershocks so far

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

  1. 1.8 8 km NW of Perry, Oklahoma
  2. 1.7 9 km ESE of Mulhall, Oklahoma
  3. 1.9 5 km WNW of Lucien, Oklahoma
  4. 1.7 5 km WNW of Lucien, Oklahoma
  5. 2.4 12 km NW of Edmond, Oklahoma
  6. 1.7 11 km NW of Edmond, Oklahoma
  7. 1.6 9 km NW of Perry, Oklahoma
  8. 1.6 4 km W of Lucien, Oklahoma
  9. 1.8 5 km ESE of Covington, Oklahoma
  10. 1.8 5 km ESE of Covington, Oklahoma
  11. 1.8 6 km WNW of Lucien, Oklahoma
  12. 1.9 5 km ESE of Covington, Oklahoma
  13. 3.4 6 km ESE of Covington, Oklahoma
  14. 2.0 5 km ESE of Covington, Oklahoma
  15. 1.8 3 km W of Lucien, 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 5.0 on 2016-11-07 — it released about 22,000 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.