QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

1 km SSE of Hennessey, Oklahoma

· 6.8 km deep · released about 27 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingfisher County 17 kmGarfield County 32 kmLogan County 45 kmBlaine County 54 kmCanadian County 62 kmMajor County 63 kmNoble County 67 kmOklahoma County 74 kmGrant County 77 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 2.0 (ml)
Depth
6.8 km below the surface
Felt
no reports yet
Nearest
Kingfisher County, 17 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2106 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 27 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 560,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 390,000× the energy of this one
  3. Around the size people start to feel M 3.0 35× the energy of this one
  4. This earthquake M 2.0 about 27 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 36.0980, -97.8913. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingfisher County, OK 17 km (11 mi) NNE of here earthquakes near Kingfisher County
Garfield County, OK 32 km (20 mi) SSW of here earthquakes near Garfield County
Logan County, OK 45 km (28 mi) WNW of here earthquakes near Logan County
Blaine County, OK 54 km (34 mi) ENE of here earthquakes near Blaine County
Canadian County, OK 62 km (39 mi) N of here earthquakes near Canadian County
Major County, OK 63 km (39 mi) ESE of here earthquakes near Major County

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

Aftershocks so far

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

  1. 1.8 5 km ESE of Covington, Oklahoma
  2. 2.1 5 km WNW of Lucien, Oklahoma
  3. 1.9 5 km ESE of Covington, Oklahoma
  4. 1.5 6 km WNW of Lucien, Oklahoma
  5. 2.1 5 km W of Lucien, Oklahoma
  6. 2.2 6 km WNW of Lucien, Oklahoma
  7. 2.6 5 km WNW of Lucien, Oklahoma
  8. 2.0 5 km ESE of Covington, Oklahoma
  9. 2.5 5 km ESE of Covington, Oklahoma
  10. 4.2 5 km WNW of Lucien, Oklahoma
  11. 1.7 5 km WNW of Lucien, Oklahoma
  12. 2.6 5 km WNW of Lucien, Oklahoma
  13. 2.3 5 km WNW of Lucien, Oklahoma
  14. 3.6 6 km WNW of Lucien, Oklahoma
  15. 3.5 5 km WNW 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 4.6 on 2018-04-09 — it released about 8,800 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.