QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

9 km E of Perry, Oklahoma

· 5.9 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 12 kmPayne County 29 kmPawnee County 44 kmLogan County 47 kmGarfield County 55 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 2.7 (ml)
Depth
5.9 km below the surface
Felt
no reports yet
Nearest
Noble County, 12 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3347 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 36.2819, -97.1834. 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 44 km (27 mi) W of here earthquakes near Pawnee County
Logan County, OK 47 km (29 mi) NNE of here earthquakes near Logan County
Garfield County, OK 55 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

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

  1. 2.7 14 km NNW of Pawnee, Oklahoma
  2. 2.6 8 km WSW of Glencoe, Oklahoma
  3. 2.9 Oklahoma
  4. 2.6 9 km ENE of Orlando, Oklahoma
  5. 2.5 14 km WSW of Ralston, Oklahoma
  6. 3.3 Oklahoma
  7. 2.4 6 km NNE of Stillwater, Oklahoma
  8. 2.6 4 km W of Lucien, Oklahoma
  9. 2.5 9 km NE of Marshall, Oklahoma
  10. 2.6 1 km W of Douglas, Oklahoma
  11. 2.4 1 km WNW of Douglas, Oklahoma
  12. 2.6 3 km ENE of Marshall, Oklahoma
  13. 2.9 4 km W of Lucien, Oklahoma
  14. 2.9 4 km W of Lucien, Oklahoma
  15. 3.1 9 km NW of Pawnee, 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 45,000 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.