QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

7 km SSE of Erin Springs, Oklahoma

· 7.0 km deep · released about 2.1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garvin County 24 kmMcClain County 32 kmStephens County 39 kmGrady County 42 kmMurray County 54 kmCleveland County 56 kmCarter County 61 kmJefferson County 75 kmPottawatomie County 76 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 3.4 (ml)
Depth
7.0 km below the surface
Felt
10 reports · strongest reported intensity IV
Nearest
Garvin County, 24 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2140 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 80,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,500× the energy of this one
  4. This earthquake M 3.4 about 2.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.4× 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 34.7450, -97.5730. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garvin County, OK 24 km (15 mi) W of here earthquakes near Garvin County
McClain County, OK 32 km (20 mi) SSW of here earthquakes near McClain County
Stephens County, OK 39 km (24 mi) NE of here earthquakes near Stephens County
Grady County, OK 42 km (26 mi) SE of here earthquakes near Grady County
Murray County, OK 54 km (34 mi) WNW of here earthquakes near Murray County
Cleveland County, OK 56 km (35 mi) SSW of here earthquakes near Cleveland 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. 2.2 10 km SE of Ratliff City, Oklahoma
  2. 1.8 9 km SE of Ratliff City, Oklahoma
  3. 1.7 10 km SE of Ratliff City, Oklahoma
  4. 1.7 12 km SE of Ratliff City, Oklahoma
  5. 1.7 14 km NE of Healdton, Oklahoma
  6. 2.3 11 km SE of Ratliff City, Oklahoma
  7. 1.5 11 km SE of Ratliff City, Oklahoma
  8. 2.2 11 km SE of Ratliff City, Oklahoma
  9. 2.3 12 km SE of Ratliff City, Oklahoma
  10. 1.8 9 km SE of Ratliff City, Oklahoma
  11. 1.8 9 km SE of Ratliff City, Oklahoma
  12. 1.7 12 km SE of Tatums, Oklahoma
  13. 1.6 14 km SE of Tatums, Oklahoma
  14. 1.6 9 km SE of Tatums, Oklahoma
  15. 2.0 8 km ESE 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.