QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

5 km N of Breckinridge, Oklahoma

· 4.8 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 13 kmGrant County 34 kmNoble County 46 kmAlfalfa County 59 kmKingfisher County 62 kmKay County 65 kmLogan County 68 kmMajor County 74 kmPayne County 82 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
4.8 km below the surface
Felt
no reports yet
Nearest
Garfield County, 13 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3023 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 36.4841, -97.7396. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 13 km (8 mi) NNE of here earthquakes near Garfield County
Grant County, OK 34 km (21 mi) S of here earthquakes near Grant County
Noble County, OK 46 km (29 mi) WNW of here earthquakes near Noble County
Alfalfa County, OK 59 km (37 mi) ESE of here earthquakes near Alfalfa County
Kingfisher County, OK 62 km (39 mi) NNE of here earthquakes near Kingfisher County
Kay County, OK 65 km (40 mi) SW of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 2.5 10 km SSE of Marshall, Oklahoma
  2. 3.0 10 km SSE of Marshall, Oklahoma
  3. 2.8 10 km SSE of Marshall, Oklahoma
  4. 3.7 10 km SSE of Marshall, Oklahoma
  5. 2.8 4 km NNW of Medford, Oklahoma
  6. 2.8 4 km W of Lucien, Oklahoma
  7. 2.8 8 km SSE of Pond Creek, Oklahoma
  8. 2.8 3 km SE of Meno, Oklahoma
  9. 2.6 5 km E of Hennessey, Oklahoma
  10. 3.0 5 km E of Hennessey, Oklahoma
  11. 1.6 5 km NNW of Breckinridge, Oklahoma
  12. 2.3 9 km W of Orlando, Oklahoma
  13. 2.5 5 km WNW of Lucien, Oklahoma
  14. 1.8 4 km W of Lucien, Oklahoma
  15. 1.7 5 km W of Lucien, 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 4.3 on 2017-09-08 — it released about 250 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.