QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

9 km NNW of Perry, Oklahoma

· 5.8 km deep · released about 460 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 10 kmGarfield County 40 kmPayne County 46 kmLogan County 51 kmKay County 53 kmPawnee County 58 kmGrant County 61 kmKingfisher County 70 kmLincoln County 85 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 2.8 (ml)
Depth
5.8 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Noble County, 10 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1700 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 460 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 33,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 23,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 460 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 36.3658, -97.3450. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Noble County, OK 10 km (6 mi) WSW of here earthquakes near Noble County
Garfield County, OK 40 km (25 mi) E of here earthquakes near Garfield County
Payne County, OK 46 km (29 mi) NW of here earthquakes near Payne County
Logan County, OK 51 km (32 mi) N of here earthquakes near Logan County
Kay County, OK 53 km (33 mi) SSW of here earthquakes near Kay County
Pawnee County, OK 58 km (36 mi) W of here earthquakes near Pawnee County

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

Aftershocks so far

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

  1. 1.9 4 km NE of Coyle, Oklahoma
  2. 1.9 8 km ESE of Marshall, Oklahoma
  3. 2.8 4 km W of Lucien, Oklahoma
  4. 1.7 4 km NE of Coyle, Oklahoma
  5. 1.7 5 km NE of Crescent, Oklahoma
  6. 1.7 10 km W of Lamont, Oklahoma
  7. 2.0 4 km SE of Marshall, Oklahoma
  8. 1.5 5 km W of Lucien, Oklahoma
  9. 1.9 10 km NNW of Perry, Oklahoma
  10. 1.5 10 km NW of Pawnee, Oklahoma
  11. 2.0 11 km NW of Pawnee, Oklahoma
  12. 2.0 5 km WNW of Lucien, Oklahoma
  13. 2.7 10 km ESE of Jefferson, Oklahoma
  14. 2.2 3 km NNW of Covington, Oklahoma
  15. 1.9 3 km NNW of Covington, 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 33,000 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.