QuakeIndex

quarry blast · reviewed by a seismologist

M 1.8ml

3 km NNE of Stringtown, Oklahoma

· 0.0 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Atoka County 12 kmCoal County 25 kmPittsburg County 54 kmPushmataha County 59 kmJohnston County 60 kmBryan County 63 kmHughes County 65 kmPontotoc County 65 kmChoctaw County 69 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
0.0 km below the surface
Felt
no reports yet
Nearest
Atoka County, 12 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1122 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 34.4973, -96.0380. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Atoka County, OK 12 km (7 mi) N of here earthquakes near Atoka County
Coal County, OK 25 km (15 mi) ESE of here earthquakes near Coal County
Pittsburg County, OK 54 km (34 mi) SSW of here earthquakes near Pittsburg County
Pushmataha County, OK 59 km (37 mi) WNW of here earthquakes near Pushmataha County
Johnston County, OK 60 km (37 mi) ENE of here earthquakes near Johnston County
Bryan County, OK 63 km (39 mi) NNE of here earthquakes near Bryan 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. 1.9 4 km ENE of Wardville, Oklahoma
  2. 1.7 5 km NE of Wardville, Oklahoma
  3. 1.7 3 km NE of Wardville, Oklahoma
  4. 1.7 4 km ENE of Wardville, Oklahoma
  5. 2.4 4 km ENE of Wardville, Oklahoma
  6. 1.5 4 km NE of Wardville, Oklahoma
  7. 2.5 4 km ENE of Wardville, Oklahoma
  8. 2.9 4 km ENE of Wardville, Oklahoma
  9. 2.0 5 km ENE of Wardville, Oklahoma
  10. 2.1 5 km ENE of Wardville, Oklahoma
  11. 2.7 4 km ENE of Wardville, Oklahoma
  12. 1.8 4 km NE of Wardville, Oklahoma
  13. 1.5 4 km ENE of Wardville, Oklahoma
  14. 1.6 2 km SE of Stonewall, Oklahoma
  15. 1.5 9 km SSE of Wapanucka, 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.