QuakeIndex

Earthquake · reviewed by a seismologist

M 4.2mwr

4 km N of Breckinridge, Oklahoma

· 8.1 km deep · released about 30 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 12 kmGrant County 35 kmNoble County 46 kmAlfalfa County 59 kmKingfisher County 61 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 4.2 (mwr)
Depth
8.1 km below the surface
Felt
2000 reports · strongest reported intensity VI
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Garfield County, 12 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1840 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 2000 people have reported feeling it to USGS.

How big was it?

This earthquake released about 30 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 5,600× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 250× the energy of this one
  3. Magna, Utah 2020 M 5.7 180× the energy of this one
  4. This earthquake M 4.2 about 30 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 63× more

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 36.4780, -97.7411. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 12 km (7 mi) NNE of here earthquakes near Garfield County
Grant County, OK 35 km (22 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 61 km (38 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

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

  1. 1.7 5 km W of Lucien, Oklahoma
  2. 1.9 5 km W of Lucien, Oklahoma
  3. 2.4 9 km NE of Marshall, Oklahoma
  4. 2.4 4 km ESE of Covington, Oklahoma
  5. 1.8 4 km WNW of Lucien, Oklahoma
  6. 1.8 4 km WNW of Lucien, Oklahoma
  7. 2.3 4 km W of Lucien, Oklahoma
  8. 1.8 4 km W of Lucien, Oklahoma
  9. 2.9 4 km WNW of Medford, Oklahoma
  10. 2.7 3 km WNW of Lucien, Oklahoma
  11. 2.0 5 km WNW of Lucien, Oklahoma
  12. 2.4 4 km W of Lucien, Oklahoma
  13. 2.6 8 km SW of Perry, Oklahoma
  14. 2.3 5 km ESE of Covington, Oklahoma
  15. 2.4 4 km ENE 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 4.3 on 2017-09-08 — it released about 1.4 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.