QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

6 km N of Foster, Oklahoma

· 5.8 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garvin County 18 kmMcClain County 38 kmStephens County 39 kmMurray County 45 kmCarter County 51 kmGrady County 52 kmCleveland County 61 kmJefferson County 71 kmPontotoc County 74 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
5.8 km below the surface
Felt
no reports yet
Nearest
Garvin County, 18 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3083 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 34.6754, -97.5007. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garvin County, OK 18 km (11 mi) WSW of here earthquakes near Garvin County
McClain County, OK 38 km (24 mi) S of here earthquakes near McClain County
Stephens County, OK 39 km (24 mi) ENE of here earthquakes near Stephens County
Murray County, OK 45 km (28 mi) WNW of here earthquakes near Murray County
Carter County, OK 51 km (32 mi) NNW of here earthquakes near Carter County
Grady County, OK 52 km (32 mi) SE of here earthquakes near Grady County

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

Aftershocks so far

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

  1. 2.5 5 km SSE of Erin Springs, Oklahoma
  2. 2.8 6 km SE of Erin Springs, Oklahoma
  3. 2.7 0 km SE of Cole, Oklahoma
  4. 2.3 1 km WNW of Cole, Oklahoma
  5. 1.9 2 km WSW of Cole, Oklahoma
  6. 2.8 1 km NNW of Cole, Oklahoma
  7. 2.7 4 km S of Cole, Oklahoma
  8. 1.8 9 km NE of Velma, Oklahoma
  9. 1.8 3 km SE of Cole, Oklahoma
  10. 2.1 3 km WNW of Alex, Oklahoma
  11. 2.2 1 km NE of Wayne, Oklahoma
  12. 2.3 1 km NW of Wayne, Oklahoma
  13. 2.5 6 km SSW of Blanchard, Oklahoma
  14. 2.9 6 km NNW of Velma, Oklahoma
  15. 3.0 0 km SE of Dibble, 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.