QuakeIndex

quarry blast · reviewed by a seismologist

M 2.1ml

11 km SE of Katie, Oklahoma

· 0.0 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Murray County 17 kmGarvin County 22 kmCarter County 30 kmStephens County 55 kmPontotoc County 57 kmMcClain County 58 kmJohnston County 60 kmLove County 62 kmJefferson County 70 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
0.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Murray County, 17 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1781 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.

USGS catalogues this as quarry blast, not an earthquake.

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 34.5170, -97.2582. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Murray County, OK 17 km (11 mi) WNW of here earthquakes near Murray County
Garvin County, OK 22 km (14 mi) SSE of here earthquakes near Garvin County
Carter County, OK 30 km (18 mi) N of here earthquakes near Carter County
Stephens County, OK 55 km (34 mi) E of here earthquakes near Stephens County
Pontotoc County, OK 57 km (35 mi) WSW of here earthquakes near Pontotoc County
McClain County, OK 58 km (36 mi) SSE of here earthquakes near McClain County

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

Aftershocks so far

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

  1. 2.1 8 km SSW of Wynnewood, Oklahoma
  2. 2.0 8 km SSW of Wynnewood, Oklahoma
  3. 1.5 11 km SE of Katie, Oklahoma
  4. 1.6 1 km S of Mill Creek, Oklahoma
  5. 1.9 7 km N of Mill Creek, Oklahoma
  6. 1.6 3 km WSW of Mill Creek, Oklahoma
  7. 1.9 5 km SE of Mill Creek, Oklahoma
  8. 1.5 7 km W of Davis, Oklahoma
  9. 1.6 2 km S of Mill Creek, Oklahoma
  10. 1.7 11 km W of Davis, Oklahoma
  11. 1.6 3 km SW of Mill Creek, Oklahoma
  12. 1.6 13 km WNW of Foster, Oklahoma
  13. 1.6 3 km WSW of Mill Creek, Oklahoma
  14. 1.6 5 km WSW of Mill Creek, Oklahoma
  15. 1.9 4 km WSW of Mill Creek, 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.