QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

9 km NE of Marshall, Oklahoma

· 4.2 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 28 kmNoble County 34 kmLogan County 34 kmKingfisher County 45 kmPayne County 54 kmGrant County 67 kmOklahoma County 74 kmKay County 76 kmPawnee 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 2.6 (ml)
Depth
4.2 km below the surface
Felt
no reports yet
Nearest
Garfield County, 28 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2902 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 36.2135, -97.5510. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 28 km (17 mi) SE of here earthquakes near Garfield County
Noble County, OK 34 km (21 mi) SW of here earthquakes near Noble County
Logan County, OK 34 km (21 mi) NNW of here earthquakes near Logan County
Kingfisher County, OK 45 km (28 mi) NE of here earthquakes near Kingfisher County
Payne County, OK 54 km (33 mi) WNW of here earthquakes near Payne County
Grant County, OK 67 km (42 mi) SSE of here earthquakes near Grant County

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

Aftershocks so far

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

  1. 3.0 3 km ESE of Hennessey, Oklahoma
  2. 1.9 2 km E of Hennessey, Oklahoma
  3. 2.6 5 km W of Lucien, Oklahoma
  4. 2.4 4 km W of Lucien, Oklahoma
  5. 2.5 5 km NNE of Cedar Valley, Oklahoma
  6. 2.7 0 km NNW of Coyle, Oklahoma
  7. 2.5 5 km E of Hennessey, Oklahoma
  8. 2.5 5 km W of Lucien, Oklahoma
  9. 3.0 5 km WNW of Lucien, Oklahoma
  10. 2.5 4 km W of Lucien, Oklahoma
  11. 2.4 3 km WSW of Lucien, Oklahoma
  12. 3.0 4 km E of Hennessey, Oklahoma
  13. 2.6 2 km ESE of Hennessey, Oklahoma
  14. 2.3 2 km ESE of Hennessey, Oklahoma
  15. 2.6 7 km S of Guthrie, 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 4.6 on 2018-04-09 — it released about 1,000 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.