QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

9 km WNW of Red Rock, Oklahoma

· 8.1 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 14 kmKay County 36 kmGarfield County 48 kmPayne County 54 kmGrant County 56 kmPawnee County 56 kmLogan County 68 kmOsage County 78 kmSumner County 84 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 2.6 (ml)
Depth
8.1 km below the surface
Felt
no reports yet
Nearest
Noble County, 14 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3663 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 36.5050, -97.2727. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Noble County, OK 14 km (9 mi) NNW of here earthquakes near Noble County
Kay County, OK 36 km (23 mi) SSW of here earthquakes near Kay County
Garfield County, OK 48 km (30 mi) ENE of here earthquakes near Garfield County
Payne County, OK 54 km (34 mi) NNW of here earthquakes near Payne County
Grant County, OK 56 km (35 mi) SE of here earthquakes near Grant County
Pawnee County, OK 56 km (35 mi) WNW of here earthquakes near Pawnee 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. 2.5 4 km SSE of Covington, Oklahoma
  2. 2.5 4 km SSE of Covington, Oklahoma
  3. 2.7 4 km SSE of Covington, Oklahoma
  4. 2.7 11 km WNW of Orlando, Oklahoma
  5. 2.5 7 km WSW of Red Rock, Oklahoma
  6. 2.5 1 km WSW of Douglas, Oklahoma
  7. 2.7 1 km W of Douglas, Oklahoma
  8. 2.9 2 km NNW of Fairmont, Oklahoma
  9. 2.9 4 km SSE of Covington, Oklahoma
  10. 2.5 14 km SSE of Billings, Oklahoma
  11. 3.1 6 km NNW of Red Rock, Oklahoma
  12. 2.9 6 km NNW of Red Rock, Oklahoma
  13. 3.0 8 km WSW of Deer Creek, Oklahoma
  14. 3.1 14 km SSE of Billings, Oklahoma
  15. 3.5 9 km W of Deer Creek, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2016-07-17 — it released about 250 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.