QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1mb_lg

0 km NNW of Stillwater, Oklahoma

· 5.9 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Payne County 9 kmNoble County 33 kmPawnee County 39 kmLogan County 42 kmLincoln County 49 kmCreek County 66 kmOklahoma County 71 kmGarfield County 71 kmKay County 77 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 (mb_lg)
Depth
5.9 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Payne County, 9 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have 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 36.1224, -97.0613. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Payne County, OK 9 km (6 mi) WNW of here earthquakes near Payne County
Noble County, OK 33 km (21 mi) SSE of here earthquakes near Noble County
Pawnee County, OK 39 km (24 mi) WSW of here earthquakes near Pawnee County
Logan County, OK 42 km (26 mi) ENE of here earthquakes near Logan County
Lincoln County, OK 49 km (31 mi) NNW of here earthquakes near Lincoln County
Creek County, OK 66 km (41 mi) WNW of here earthquakes near Creek County

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

Aftershocks so far

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

  1. 3.0 14 km WSW of Ralston, Oklahoma
  2. 2.5 10 km NNW of Arcadia, Oklahoma
  3. 3.3 4 km SW of Yale, Oklahoma
  4. 2.6 5 km SSE of Cushing, Oklahoma
  5. 2.6 5 km W of Quay, Oklahoma
  6. 2.7 5 km W of Quay, Oklahoma
  7. 2.1 7 km S of Perry, Oklahoma
  8. 2.6 9 km NNE of Guthrie, Oklahoma
  9. 2.5 9 km W of Quay, Oklahoma
  10. 3.0 8 km W of Quay, Oklahoma
  11. 2.7 2 km NNW of Maramec, Oklahoma
  12. 3.5 5 km W of Lucien, Oklahoma
  13. 2.8 8 km S of Perry, Oklahoma
  14. 3.0 5 km S of Cushing, Oklahoma
  15. 3.1 10 km ENE of Perry, 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.