QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

6 km NE of Hunter, Oklahoma

· 6.6 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 26 kmGarfield County 29 kmNoble County 42 kmKay County 48 kmAlfalfa County 65 kmSumner County 71 kmHarper County 76 kmLogan County 78 kmKingfisher County 78 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 3.3 (ml)
Depth
6.6 km below the surface
Felt
no reports yet
Nearest
Grant County, 26 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3693 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 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 36.6032, -97.6141. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 26 km (16 mi) SE of here earthquakes near Grant County
Garfield County, OK 29 km (18 mi) NNE of here earthquakes near Garfield County
Noble County, OK 42 km (26 mi) NW of here earthquakes near Noble County
Kay County, OK 48 km (30 mi) WSW of here earthquakes near Kay County
Alfalfa County, OK 65 km (40 mi) ESE of here earthquakes near Alfalfa County
Sumner County, KS 71 km (44 mi) S of here earthquakes near Sumner County

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

Aftershocks so far

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

  1. 2.6 4 km SSE of Covington, Oklahoma
  2. 3.0 3 km ESE of Fairmont, Oklahoma
  3. 2.5 6 km NNE of Medford, Oklahoma
  4. 2.7 8 km WNW of Medford, Oklahoma
  5. 3.0 6 km SE of Nescatunga, Oklahoma
  6. 3.0 6 km ENE of Covington, Oklahoma
  7. 2.7 Oklahoma
  8. 2.9 4 km SSE of Braman, Oklahoma
  9. 2.6 7 km ENE of Covington, Oklahoma
  10. 3.2 4 km SSE of Covington, Oklahoma
  11. 2.9 4 km SW of Perry, Oklahoma
  12. 2.8 9 km W of Deer Creek, Oklahoma
  13. 2.8 3 km ENE of Jet, Oklahoma
  14. 1.5 4 km ESE of Caldwell, Kansas
  15. 2.8 8 km ESE of Hunter, 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.