QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

6 km SW of Thomas, Oklahoma

· 6.3 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Custer County 19 kmDewey County 36 kmBlaine County 38 kmWashita County 49 kmCaddo County 70 kmMajor County 72 kmCanadian County 76 kmKingfisher County 82 kmRoger Mills County 85 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 2.3 (mb_lg)
Depth
6.3 km below the surface
Felt
no reports yet
Nearest
Custer County, 19 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2602 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 35.7029, -98.7949. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Custer County, OK 19 km (12 mi) ENE of here earthquakes near Custer County
Dewey County, OK 36 km (23 mi) SSE of here earthquakes near Dewey County
Blaine County, OK 38 km (24 mi) WSW of here earthquakes near Blaine County
Washita County, OK 49 km (31 mi) NNE of here earthquakes near Washita County
Caddo County, OK 70 km (44 mi) NNW of here earthquakes near Caddo County
Major County, OK 72 km (44 mi) SSW 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 W of Custer City, Oklahoma
  2. 2.1 12 km NW of Watonga, Oklahoma
  3. 1.6 10 km S of Thomas, Oklahoma
  4. 1.6 11 km SSE of Thomas, Oklahoma
  5. 2.0 9 km SSE of Thomas, Oklahoma
  6. 1.8 1 km S of Hitchcock, Oklahoma
  7. 2.1 6 km WSW of Thomas, Oklahoma
  8. 1.9 6 km N of Weatherford, Oklahoma
  9. 1.8 Oklahoma
  10. 1.8 12 km NW of Watonga, Oklahoma
  11. 1.9 5 km S of Canton, Oklahoma
  12. 1.6 5 km WNW of Canton, Oklahoma
  13. 1.7 8 km WNW of Greenfield, Oklahoma
  14. 1.7 7 km NNE of Custer City, Oklahoma
  15. 1.9 11 km NW of Watonga, 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.