QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

8 km SW of Ratliff City, Oklahoma

· 16 km deep · released about 23 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Stephens County 27 kmCarter County 32 kmJefferson County 41 kmGarvin County 42 kmMurray County 47 kmLove County 58 kmMcClain County 69 kmCotton County 74 kmGrady County 74 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 1.9 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Stephens County, 27 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 832 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 23 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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 34.4030, -97.5783. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Stephens County, OK 27 km (17 mi) ESE of here earthquakes near Stephens County
Carter County, OK 32 km (20 mi) WNW of here earthquakes near Carter County
Jefferson County, OK 41 km (25 mi) NE of here earthquakes near Jefferson County
Garvin County, OK 42 km (26 mi) SW of here earthquakes near Garvin County
Murray County, OK 47 km (29 mi) W of here earthquakes near Murray County
Love County, OK 58 km (36 mi) NNW of here earthquakes near Love County

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

Aftershocks so far

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

  1. 1.6 5 km SSE of Ratliff City, Oklahoma
  2. 1.6 6 km SSE of Ratliff City, Oklahoma
  3. 1.5 5 km SSE of Ratliff City, Oklahoma
  4. 1.5 5 km SSE of Ratliff City, Oklahoma
  5. 1.7 6 km SE of Ratliff City, Oklahoma
  6. 1.7 4 km N of Velma, Oklahoma
  7. 1.6 7 km N of Velma, Oklahoma
  8. 1.5 4 km NNE of Velma, Oklahoma
  9. 1.9 4 km N of Velma, Oklahoma
  10. 1.7 4 km NNE of Velma, Oklahoma
  11. 1.6 3 km N of Velma, Oklahoma
  12. 1.9 5 km SE of Ratliff City, Oklahoma
  13. 1.6 6 km SSW of Bradley, Oklahoma
  14. 1.5 8 km WNW of Davis, Oklahoma
  15. 1.9 8 km WNW of Davis, 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.