QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

11 km ESE of Chickasha, Oklahoma

· 8.0 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grady County 6 kmMcClain County 34 kmCleveland County 50 kmCaddo County 54 kmGarvin County 57 kmStephens County 59 kmCanadian County 61 kmOklahoma County 71 kmComanche County 72 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
8.0 km below the surface
Felt
no reports yet
Nearest
Grady County, 6 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1502 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 11 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 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 35.0153, -97.8188. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grady County, OK 6 km (4 mi) E of here earthquakes near Grady County
McClain County, OK 34 km (21 mi) W of here earthquakes near McClain County
Cleveland County, OK 50 km (31 mi) WSW of here earthquakes near Cleveland County
Caddo County, OK 54 km (33 mi) ESE of here earthquakes near Caddo County
Garvin County, OK 57 km (36 mi) NW of here earthquakes near Garvin County
Stephens County, OK 59 km (37 mi) N of here earthquakes near Stephens 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. 2.1 4 km WSW of Minco, Oklahoma
  2. 1.6 5 km WSW of Minco, Oklahoma
  3. 1.5 6 km WSW of Minco, Oklahoma
  4. 1.6 5 km SW of Minco, Oklahoma
  5. 1.6 6 km WSW of Minco, Oklahoma
  6. 2.1 4 km ENE of Union City, Oklahoma
  7. 2.7 9 km S of Dibble, Oklahoma
  8. 1.7 4 km ENE of Union City, Oklahoma
  9. 1.9 4 km ENE of Union City, Oklahoma
  10. 1.5 4 km ENE of Union City, Oklahoma
  11. 1.6 9 km S of Dibble, Oklahoma
  12. 1.7 5 km ENE of Union City, Oklahoma
  13. 1.5 5 km ENE of Union City, Oklahoma
  14. 2.4 5 km ENE of Union City, Oklahoma
  15. 1.7 4 km ENE of Union City, 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.