QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

7 km SSE of Erin Springs, Oklahoma

· 7.0 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garvin County 24 kmMcClain County 31 kmStephens County 40 kmGrady County 42 kmMurray County 54 kmCleveland County 55 kmCarter County 61 kmPottawatomie County 75 kmJefferson 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 1.7 (ml)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Garvin County, 24 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1831 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 34.7532, -97.5658. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garvin County, OK 24 km (15 mi) WNW of here earthquakes near Garvin County
McClain County, OK 31 km (19 mi) SSW of here earthquakes near McClain County
Stephens County, OK 40 km (25 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 55 km (34 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

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

  1. 1.7 3 km ESE of Bradley, Oklahoma
  2. 1.6 7 km SW of Alex, Oklahoma
  3. 1.5 2 km W of Cole, Oklahoma
  4. 1.5 8 km ESE of Amber, Oklahoma
  5. 2.0 10 km E of Chickasha, Oklahoma
  6. 1.9 1 km WNW of Cole, Oklahoma
  7. 2.2 1 km WNW of Cole, Oklahoma
  8. 1.8 2 km WNW of Cole, Oklahoma
  9. 1.6 1 km W of Cole, Oklahoma
  10. 1.5 1 km WNW of Cole, Oklahoma
  11. 1.7 9 km SSW of Alex, Oklahoma
  12. 2.2 7 km SSW of Alex, Oklahoma
  13. 1.9 9 km SSW of Alex, Oklahoma
  14. 2.4 0 km W of Cole, Oklahoma
  15. 1.6 2 km WSW of Cole, 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.