QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

10 km WSW of Shamrock, Oklahoma

· 6.4 km deep · released about 1,900 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lincoln County 25 kmCreek County 28 kmPayne County 35 kmPawnee County 50 kmOkfuskee County 55 kmOkmulgee County 69 kmLogan County 69 kmTulsa County 73 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 3.2 (ml)
Depth
6.4 km below the surface
Felt
12 reports · strongest reported intensity III
Nearest
Lincoln County, 25 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1512 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 12 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× more

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 35.8642, -96.6838. 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 35 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 55 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

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

  1. 2.9 3 km E of Luther, Oklahoma
  2. 2.5 6 km ENE of Coyle, Oklahoma
  3. 2.5 11 km WSW of Shamrock, Oklahoma
  4. 2.5 11 km NE of Kendrick, Oklahoma
  5. 2.7 3 km W of Cushing, Oklahoma
  6. 2.8 9 km WSW of Shamrock, Oklahoma
  7. 2.9 10 km WSW of Shamrock, Oklahoma
  8. 2.5 4 km NE of Meridian, Oklahoma
  9. 2.7 10 km NNE of Kendrick, Oklahoma
  10. 2.5 3 km WNW of Cushing, Oklahoma
  11. 2.6 10 km WSW of Shamrock, Oklahoma
  12. 2.6 7 km W of Shamrock, Oklahoma
  13. 2.9 10 km WSW of Shamrock, Oklahoma
  14. 3.0 3 km WNW of Cushing, Oklahoma
  15. 2.5 9 km SW of Shamrock, 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 500 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.