QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8mb_lg

6 km SE of Erin Springs, Oklahoma

· 5.0 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garvin County 24 kmMcClain County 29 kmGrady County 41 kmStephens County 42 kmCleveland County 53 kmMurray County 55 kmCarter County 63 kmPottawatomie County 74 kmJefferson 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 2.8 (mb_lg)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Garvin County, 24 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2614 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 480 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 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 34.7679, -97.5606. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garvin County, OK 24 km (15 mi) WNW of here earthquakes near Garvin County
McClain County, OK 29 km (18 mi) SSW of here earthquakes near McClain County
Grady County, OK 41 km (25 mi) SE of here earthquakes near Grady County
Stephens County, OK 42 km (26 mi) NE of here earthquakes near Stephens County
Cleveland County, OK 53 km (33 mi) SSW of here earthquakes near Cleveland County
Murray County, OK 55 km (34 mi) NW of here earthquakes near Murray County

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

Aftershocks so far

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

  1. 2.3 8 km N of Bradley, Oklahoma
  2. 2.2 8 km SW of Dibble, Oklahoma
  3. 1.9 8 km N of Bradley, Oklahoma
  4. 1.6 9 km SSW of Dibble, Oklahoma
  5. 1.8 6 km N of Bradley, Oklahoma
  6. 1.6 9 km SSW of Dibble, Oklahoma
  7. 1.9 8 km NNE of Bradley, Oklahoma
  8. 1.7 7 km NNE of Alex, Oklahoma
  9. 1.6 7 km N of Bradley, Oklahoma
  10. 2.2 9 km WNW of Dibble, Oklahoma
  11. 2.3 4 km WNW of Alex, Oklahoma
  12. 2.3 5 km N of Alex, Oklahoma
  13. 1.7 7 km WNW of Wayne, Oklahoma
  14. 1.9 7 km W of Wayne, Oklahoma
  15. 1.6 3 km N of Chickasha, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.