QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

6 km N of Coalgate, Oklahoma

· 4.5 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Coal County 5 kmAtoka County 29 kmPontotoc County 44 kmJohnston County 50 kmHughes County 51 kmPittsburg County 57 kmBryan County 70 kmSeminole County 71 kmMurray County 78 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 2.8 (ml)
Depth
4.5 km below the surface
Felt
no reports yet
Nearest
Coal County, 5 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3534 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 34.5957, -96.2317. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coal County, OK 5 km (3 mi) ENE of here earthquakes near Coal County
Atoka County, OK 29 km (18 mi) NW of here earthquakes near Atoka County
Pontotoc County, OK 44 km (28 mi) ESE of here earthquakes near Pontotoc County
Johnston County, OK 50 km (31 mi) NE of here earthquakes near Johnston County
Hughes County, OK 51 km (32 mi) S of here earthquakes near Hughes County
Pittsburg County, OK 57 km (36 mi) SW of here earthquakes near Pittsburg County

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

Aftershocks so far

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

  1. 1.6 Oklahoma
  2. 1.7 8 km S of Wapanucka, Oklahoma
  3. 1.5 12 km NNW of Kenefic, Oklahoma
  4. 1.8 7 km S of Wapanucka, Oklahoma
  5. 1.6 8 km SSE of Wapanucka, Oklahoma
  6. 1.5 7 km SE of Calvin, Oklahoma
  7. 1.9 9 km SSE of Wapanucka, Oklahoma
  8. 2.0 9 km WNW of Ashland, Oklahoma
  9. 1.6 8 km W of Stonewall, Oklahoma
  10. 1.6 12 km WNW of Caney, Oklahoma
  11. 2.0 7 km N of Atwood, Oklahoma
  12. 2.2 7 km N of Atwood, Oklahoma
  13. 1.6 9 km NW of Tushka, Oklahoma
  14. 1.7 9 km WNW of Caney, Oklahoma
  15. 1.5 2 km S of Ashland, 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.