QuakeIndex

Earthquake · automatic estimate, may change

M 2.1ml

1 km SSW of Verden, Oklahoma

· 8.6 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grady County 19 kmCaddo County 28 kmCanadian County 53 kmComanche County 58 kmMcClain County 59 kmStephens County 69 kmCleveland County 71 kmGarvin County 82 kmOklahoma County 82 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 2.1 (ml)
Depth
8.6 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Grady County, 19 km ESE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 1870 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 35.0717, -98.0910. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grady County, OK 19 km (12 mi) WNW of here earthquakes near Grady County
Caddo County, OK 28 km (18 mi) ESE of here earthquakes near Caddo County
Canadian County, OK 53 km (33 mi) S of here earthquakes near Canadian County
Comanche County, OK 58 km (36 mi) NE of here earthquakes near Comanche County
McClain County, OK 59 km (36 mi) W of here earthquakes near McClain County
Stephens County, OK 69 km (43 mi) NNW of here earthquakes near Stephens County

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

Aftershocks so far

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

  1. 2.7 8 km SSW of Alex, Oklahoma
  2. 1.9 9 km NE of Union City, Oklahoma
  3. 1.6 1 km SW of Cole, Oklahoma
  4. 2.3 8 km SSW of Alex, Oklahoma
  5. 2.6 1 km W of Cole, Oklahoma
  6. 1.7 1 km SW of Cole, Oklahoma
  7. 1.6 8 km SSW of Alex, Oklahoma
  8. 1.7 6 km SSW of Alex, Oklahoma
  9. 2.1 11 km N of Lindsay, Oklahoma
  10. 2.0 9 km N of Lindsay, Oklahoma
  11. 2.0 1 km WNW of Bridge Creek, Oklahoma
  12. 1.7 1 km W of Bridge Creek, Oklahoma
  13. 2.3 9 km E of Chickasha, Oklahoma
  14. 1.5 10 km SSE of Dibble, Oklahoma
  15. 2.1 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.