QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

7 km ENE of Hennessey, Oklahoma

· 7.4 km deep · released about 1.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingfisher County 22 kmGarfield County 28 kmLogan County 40 kmNoble County 59 kmBlaine County 62 kmCanadian County 66 kmMajor County 69 kmOklahoma County 73 kmGrant County 74 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 3.4 (ml)
Depth
7.4 km below the surface
Felt
6 reports · strongest reported intensity IV
Nearest
Kingfisher County, 22 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3051 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× more

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 36.1239, -97.8153. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingfisher County, OK 22 km (14 mi) NNE of here earthquakes near Kingfisher County
Garfield County, OK 28 km (18 mi) S of here earthquakes near Garfield County
Logan County, OK 40 km (25 mi) NW of here earthquakes near Logan County
Noble County, OK 59 km (37 mi) WSW of here earthquakes near Noble County
Blaine County, OK 62 km (38 mi) ENE of here earthquakes near Blaine County
Canadian County, OK 66 km (41 mi) NNE of here earthquakes near Canadian 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. 3.1 6 km N of Dover, Oklahoma
  2. 3.5 6 km N of Dover, Oklahoma
  3. 1.9 5 km W of Lucien, Oklahoma
  4. 2.4 9 km NE of Marshall, Oklahoma
  5. 2.4 4 km ESE of Covington, Oklahoma
  6. 1.8 4 km WNW of Lucien, Oklahoma
  7. 1.8 4 km WNW of Lucien, Oklahoma
  8. 2.3 4 km W of Lucien, Oklahoma
  9. 1.8 4 km W of Lucien, Oklahoma
  10. 2.7 3 km WNW of Lucien, Oklahoma
  11. 2.0 5 km WNW of Lucien, Oklahoma
  12. 2.4 4 km W of Lucien, Oklahoma
  13. 2.6 8 km SW of Perry, Oklahoma
  14. 2.3 5 km ESE of Covington, Oklahoma
  15. 2.4 4 km ENE of Covington, 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 4.2 on 2016-03-29 — it released about 16 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.