QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

10 km WSW of Shamrock, Oklahoma

· 8.0 km deep · released about 56 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lincoln County 25 kmCreek County 28 kmPayne County 36 kmPawnee County 50 kmOkfuskee County 54 kmOkmulgee County 69 kmLogan County 70 kmTulsa County 72 kmOklahoma County 74 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 2.2 (ml)
Depth
8.0 km below the surface
Felt
no reports yet
Nearest
Lincoln County, 25 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1777 days ago

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

How big was it?

This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 35.8632, -96.6820. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lincoln County, OK 25 km (16 mi) NE of here earthquakes near Lincoln County
Creek County, OK 28 km (17 mi) W of here earthquakes near Creek County
Payne County, OK 36 km (22 mi) SE of here earthquakes near Payne County
Pawnee County, OK 50 km (31 mi) S of here earthquakes near Pawnee County
Okfuskee County, OK 54 km (34 mi) NW of here earthquakes near Okfuskee County
Okmulgee County, OK 69 km (43 mi) WNW of here earthquakes near Okmulgee County

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

Aftershocks so far

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

  1. 2.0 4 km ESE of Carney, Oklahoma
  2. 2.0 3 km ESE of Carney, Oklahoma
  3. 3.2 Oklahoma
  4. 2.1 3 km ESE of Carney, Oklahoma
  5. 4.0 4 km ESE of Carney, Oklahoma
  6. 1.9 4 km ESE of Carney, Oklahoma
  7. 1.8 4 km ESE of Carney, Oklahoma
  8. 1.6 4 km ESE of Carney, Oklahoma
  9. 1.6 4 km ESE of Carney, Oklahoma
  10. 3.2 4 km ESE of Carney, Oklahoma
  11. 1.7 2 km SW of Wellston, Oklahoma
  12. 1.7 4 km ENE of Meridian, Oklahoma
  13. 1.6 4 km W of Cushing, Oklahoma
  14. 1.6 7 km ENE of Drumright, Oklahoma
  15. 2.6 2 km SSE of Cushing, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.0 on 2016-11-07 — it released about 17,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.