QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3mwr

7 km NNW of Hunter, Oklahoma

· 7.4 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 20 kmGarfield County 29 kmNoble County 49 kmKay County 53 kmAlfalfa County 58 kmSumner County 71 kmHarper County 71 kmKingfisher County 78 kmLogan County 82 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 (mwr)
Depth
7.4 km below the surface
Felt
no reports yet
Measured shaking
intensity III (ShakeMap)
Nearest
Grant County, 20 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3750 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 36.6229, -97.6924. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 20 km (13 mi) SSE of here earthquakes near Grant County
Garfield County, OK 29 km (18 mi) NNE of here earthquakes near Garfield County
Noble County, OK 49 km (30 mi) WNW of here earthquakes near Noble County
Kay County, OK 53 km (33 mi) WSW of here earthquakes near Kay County
Alfalfa County, OK 58 km (36 mi) ESE of here earthquakes near Alfalfa County
Sumner County, KS 71 km (44 mi) SSW of here earthquakes near Sumner County

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

Aftershocks so far

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

  1. 2.6 5 km ENE of Nash, Oklahoma
  2. 3.1 8 km W of Deer Creek, Oklahoma
  3. 2.6 4 km SSE of Covington, Oklahoma
  4. 2.7 2 km NNW of Lamont, Oklahoma
  5. 2.7 8 km ESE of Pond Creek, Oklahoma
  6. 2.3 10 km N of Nescatunga, Oklahoma
  7. 3.0 4 km SSE of Braman, Oklahoma
  8. 2.6 5 km W of Lucien, Oklahoma
  9. 2.6 13 km N of Nescatunga, Oklahoma
  10. 2.7 12 km N of Nescatunga, Oklahoma
  11. 3.3 13 km N of Nescatunga, Oklahoma
  12. 2.6 12 km ESE of Byron, Oklahoma
  13. 3.0 5 km W of Medford, Oklahoma
  14. 3.6 Oklahoma
  15. 2.7 13 km N of Nescatunga, 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.