QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

9 km E of Perry, Oklahoma

· 8.0 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 12 kmPayne County 29 kmPawnee County 43 kmLogan County 48 kmGarfield County 56 kmKay County 59 kmLincoln County 70 kmKingfisher County 77 kmGrant County 78 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 2.5 (ml)
Depth
8.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Noble County, 12 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3330 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 36.2834, -97.1802. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Noble County, OK 12 km (8 mi) SSE of here earthquakes near Noble County
Payne County, OK 29 km (18 mi) NW of here earthquakes near Payne County
Pawnee County, OK 43 km (27 mi) W of here earthquakes near Pawnee County
Logan County, OK 48 km (30 mi) NNE of here earthquakes near Logan County
Garfield County, OK 56 km (34 mi) E of here earthquakes near Garfield County
Kay County, OK 59 km (37 mi) S of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 2.7 4 km SE of Marshall, Oklahoma
  2. 2.6 12 km N of Coyle, Oklahoma
  3. 2.6 5 km N of Maramec, Oklahoma
  4. 2.2 5 km W of Lucien, Oklahoma
  5. 3.3 4 km WNW of Lucien, Oklahoma
  6. 2.6 4 km ENE of Covington, Oklahoma
  7. 3.0 6 km N of Maramec, Oklahoma
  8. 2.8 13 km NW of Pawnee, Oklahoma
  9. 2.8 13 km NW of Pawnee, Oklahoma
  10. 3.4 6 km N of Maramec, Oklahoma
  11. 2.4 11 km NW of Pawnee, Oklahoma
  12. 2.1 14 km NNW of Pawnee, Oklahoma
  13. 3.2 5 km N of Coyle, Oklahoma
  14. 2.6 13 km NNW of Pawnee, Oklahoma
  15. 3.3 9 km W of Red Rock, 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 5.8 on 2016-09-03 — it released about 89,000 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.