QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

5 km ESE of Medicine Park, Oklahoma

· 5.0 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Comanche County 6 kmCotton County 47 kmCaddo County 51 kmKiowa County 54 kmTillman County 59 kmStephens County 60 kmGrady County 61 kmWashita County 81 kmWichita County 84 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 1.8 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Comanche County, 6 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2488 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× the energy of this one
  4. This earthquake M 1.8 about 17 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 34.7133, -98.4460. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Comanche County, OK 6 km (4 mi) NNE of here earthquakes near Comanche County
Cotton County, OK 47 km (29 mi) N of here earthquakes near Cotton County
Caddo County, OK 51 km (32 mi) S of here earthquakes near Caddo County
Kiowa County, OK 54 km (34 mi) ESE of here earthquakes near Kiowa County
Tillman County, OK 59 km (36 mi) NE of here earthquakes near Tillman County
Stephens County, OK 60 km (37 mi) WNW of here earthquakes near Stephens County

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

Aftershocks so far

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

  1. 1.5 3 km NNE of Cooperton, Oklahoma
  2. 1.5 6 km NW of Medicine Park, Oklahoma
  3. 1.6 4 km N of Cooperton, Oklahoma
  4. 1.6 6 km NE of Cooperton, Oklahoma
  5. 1.6 7 km NNE of Cooperton, Oklahoma
  6. 1.8 4 km NE of Medicine Park, Oklahoma
  7. 1.5 3 km NE of Medicine Park, Oklahoma
  8. 1.5 5 km E of Medicine Park, Oklahoma
  9. 2.1 6 km SW of Medicine Park, Oklahoma
  10. 1.6 6 km NNE of Cooperton, Oklahoma
  11. 1.5 Oklahoma
  12. 2.8 1 km ESE of Medicine Park, Oklahoma
  13. 1.7 6 km NW of Cooperton, Oklahoma
  14. 1.6 8 km NE of Cooperton, Oklahoma
  15. 1.6 4 km ENE of Medicine Park, 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.