QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

3 km SE of Ratliff City, Oklahoma

· 5.2 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carter County 27 kmGarvin County 34 kmStephens County 35 kmMurray County 38 kmJefferson County 49 kmLove County 57 kmMcClain County 65 kmGrady County 75 kmJohnston County 77 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
5.2 km below the surface
Felt
no reports yet
Nearest
Carter County, 27 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 164 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 13 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 34.4310, -97.4787. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carter County, OK 27 km (16 mi) NW of here earthquakes near Carter County
Garvin County, OK 34 km (21 mi) SSW of here earthquakes near Garvin County
Stephens County, OK 35 km (22 mi) E of here earthquakes near Stephens County
Murray County, OK 38 km (23 mi) W of here earthquakes near Murray County
Jefferson County, OK 49 km (30 mi) NE of here earthquakes near Jefferson County
Love County, OK 57 km (35 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

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

  1. 1.9 12 km NNE of Bray, Oklahoma
  2. 1.8 13 km NNE of Bray, Oklahoma
  3. 1.9 13 km NNE of Bray, Oklahoma
  4. 1.5 12 km NNE of Bray, Oklahoma
  5. 1.7 13 km NNE of Bray, Oklahoma
  6. 1.5 13 km NNE of Bray, Oklahoma
  7. 1.5 12 km NNE of Bray, Oklahoma
  8. 1.5 8 km W of Davis, Oklahoma
  9. 1.6 11 km SE of Katie, Oklahoma
  10. 1.5 11 km SE of Katie, Oklahoma
  11. 1.7 4 km SE of Ratliff City, Oklahoma
  12. 2.1 4 km SE of Ratliff City, Oklahoma
  13. 1.6 3 km SE of Ratliff City, Oklahoma
  14. 1.9 3 km ESE of Ratliff City, Oklahoma
  15. 2.5 5 km SE of Ratliff City, 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.