QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

10 km ESE of Katie, Oklahoma

· 4.0 km deep · released about 38 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Murray County 18 kmGarvin County 19 kmCarter County 33 kmPontotoc County 55 kmMcClain County 56 kmStephens County 56 kmJohnston County 60 kmLove County 65 kmMarshall County 72 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
4.0 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
Murray County, 18 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 547 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 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 34.5435, -97.2500. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Murray County, OK 18 km (11 mi) WNW of here earthquakes near Murray County
Garvin County, OK 19 km (12 mi) SSE of here earthquakes near Garvin County
Carter County, OK 33 km (20 mi) N of here earthquakes near Carter County
Pontotoc County, OK 55 km (34 mi) WSW of here earthquakes near Pontotoc County
McClain County, OK 56 km (35 mi) SSE of here earthquakes near McClain County
Stephens County, OK 56 km (35 mi) E of here earthquakes near Stephens 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. 1.7 9 km E of Loco, Oklahoma
  2. 2.6 9 km ESE of Loco, Oklahoma
  3. 1.9 9 km NW of Healdton, Oklahoma
  4. 2.3 9 km WNW of Healdton, Oklahoma
  5. 2.4 10 km ESE of Loco, Oklahoma
  6. 1.9 10 km ESE of Loco, Oklahoma
  7. 1.7 10 km ESE of Loco, Oklahoma
  8. 1.7 10 km ESE of Loco, Oklahoma
  9. 1.5 2 km SE of Erin Springs, Oklahoma
  10. 1.6 7 km SE of Ratliff City, Oklahoma
  11. 1.7 5 km SE of Mill Creek, Oklahoma
  12. 1.9 6 km SE of Ratliff City, Oklahoma
  13. 1.5 6 km SE of Ratliff City, Oklahoma
  14. 1.7 6 km SE of Ratliff City, Oklahoma
  15. 1.6 7 km SSE 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.