QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

0 km SW of Durant, Oklahoma

· 5.0 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Bryan County 11 kmMarshall County 37 kmJohnston County 44 kmGrayson County 49 kmFannin County 51 kmAtoka County 55 kmCoal County 67 kmChoctaw County 76 kmLove County 80 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 2.1 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Bryan County, 11 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 261 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 37 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 33.9867, -96.3768. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Bryan County, OK 11 km (7 mi) WNW of here earthquakes near Bryan County
Marshall County, OK 37 km (23 mi) E of here earthquakes near Marshall County
Johnston County, OK 44 km (28 mi) SE of here earthquakes near Johnston County
Grayson County, TX 49 km (30 mi) NE of here earthquakes near Grayson County
Fannin County, TX 51 km (31 mi) NNW of here earthquakes near Fannin County
Atoka County, OK 55 km (34 mi) SW of here earthquakes near Atoka County

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

Aftershocks so far

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

  1. 1.5 9 km SSE of Wapanucka, Oklahoma
  2. 1.5 6 km SSE of Tishomingo, Oklahoma
  3. 1.6 10 km SSE of Wapanucka, Oklahoma
  4. 1.5 9 km SSE of Wapanucka, Oklahoma
  5. 1.5 4 km W of Durant, Oklahoma
  6. 1.6 2 km NNW of Durant, Oklahoma
  7. 1.7 1 km WSW of Durant, Oklahoma
  8. 2.0 2 km SW of Durant, Oklahoma
  9. 2.4 4 km WSW of Durant, Oklahoma
  10. 1.7 3 km SW of Armstrong, Oklahoma
  11. 1.7 3 km SW of Armstrong, 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.