QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

11 km ENE of Perry, Oklahoma

· 4.7 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 7 kmPayne County 35 kmPawnee County 44 kmKay County 53 kmLogan County 53 kmGarfield County 54 kmGrant County 73 kmOsage County 76 kmLincoln County 76 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 2.6 (mb_lg)
Depth
4.7 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Noble County, 7 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1518 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 36.3429, -97.1840. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Noble County, OK 7 km (4 mi) SE of here earthquakes near Noble County
Payne County, OK 35 km (22 mi) NNW of here earthquakes near Payne County
Pawnee County, OK 44 km (27 mi) W of here earthquakes near Pawnee County
Kay County, OK 53 km (33 mi) S of here earthquakes near Kay County
Logan County, OK 53 km (33 mi) NNE of here earthquakes near Logan County
Garfield County, OK 54 km (34 mi) E of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 3.3 Oklahoma
  2. 2.5 7 km W of Orlando, Oklahoma
  3. 2.8 4 km WNW of Douglas, Oklahoma
  4. 2.6 Oklahoma
  5. 2.7 9 km ENE of Marshall, Oklahoma
  6. 3.5 4 km NW of Douglas, Oklahoma
  7. 3.2 6 km W of Mulhall, Oklahoma
  8. 2.7 5 km WNW of Maramec, Oklahoma
  9. 2.7 6 km SW of Glencoe, Oklahoma
  10. 2.6 11 km WNW of Red Rock, Oklahoma
  11. 2.9 5 km NNE of Stillwater, Oklahoma
  12. 2.7 10 km NNW of Perry, Oklahoma
  13. 2.7 4 km NE of Maramec, Oklahoma
  14. 2.3 6 km WNW of Maramec, Oklahoma
  15. 3.4 6 km WNW of Maramec, 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.