QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

10 km W of Medford, Oklahoma

· 6.5 km deep · released about 36 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 5 kmAlfalfa County 43 kmGarfield County 47 kmHarper County 47 kmSumner County 58 kmKay County 63 kmNoble County 71 kmMajor County 82 kmKingman County 88 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 2.0 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Grant County, 5 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1634 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 36 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 420,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 300,000× the energy of this one
  3. Around the size people start to feel M 3.0 27× the energy of this one
  4. This earthquake M 2.0 about 36 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 36.7998, -97.8467. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 5 km (3 mi) WNW of here earthquakes near Grant County
Alfalfa County, OK 43 km (27 mi) E of here earthquakes near Alfalfa County
Garfield County, OK 47 km (29 mi) N of here earthquakes near Garfield County
Harper County, KS 47 km (29 mi) SSE of here earthquakes near Harper County
Sumner County, KS 58 km (36 mi) SSW of here earthquakes near Sumner County
Kay County, OK 63 km (39 mi) W of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 1.6 7 km W of Deer Creek, Oklahoma
  2. 1.6 7 km E of Nescatunga, Oklahoma
  3. 2.1 Oklahoma
  4. 2.3 Oklahoma
  5. 1.7 5 km SW of Manchester, Oklahoma
  6. 2.2 10 km ESE of Jefferson, Oklahoma
  7. 1.5 10 km W of Lamont, Oklahoma
  8. 1.9 6 km NW of Medford, Oklahoma
  9. 2.7 8 km WSW of Hunnewell, Kansas
  10. 1.8 6 km NNW of Lamont, Oklahoma
  11. 1.5 5 km SW of Manchester, Oklahoma
  12. 1.6 6 km NW of Medford, Oklahoma
  13. 2.1 7 km E of Nescatunga, Oklahoma
  14. 2.1 7 km E of Nescatunga, Oklahoma
  15. 2.0 10 km ESE of Jefferson, 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 4.5 on 2022-01-31 — it released about 4,700 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.