QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

9 km NNE of Harrah, Oklahoma

· 5.8 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lincoln County 26 kmOklahoma County 27 kmPottawatomie County 41 kmCleveland County 44 kmLogan County 50 kmPayne County 59 kmSeminole County 64 kmMcClain County 68 kmOkfuskee 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 2.6 (mb_lg)
Depth
5.8 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Lincoln County, 26 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2706 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

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 35.5598, -97.1105. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lincoln County, OK 26 km (16 mi) SW of here earthquakes near Lincoln County
Oklahoma County, OK 27 km (17 mi) E of here earthquakes near Oklahoma County
Pottawatomie County, OK 41 km (26 mi) NNW of here earthquakes near Pottawatomie County
Cleveland County, OK 44 km (27 mi) NNE of here earthquakes near Cleveland County
Logan County, OK 50 km (31 mi) SE of here earthquakes near Logan County
Payne County, OK 59 km (37 mi) SSW of here earthquakes near Payne County

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

Aftershocks so far

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

  1. 1.8 5 km W of Arcadia, Oklahoma
  2. 2.2 5 km N of Stroud, Oklahoma
  3. 1.5 6 km WSW of Sparks, Oklahoma
  4. 1.6 5 km N of Stroud, Oklahoma
  5. 1.8 8 km ESE of Guthrie, Oklahoma
  6. 2.0 5 km N of Stroud, Oklahoma
  7. 3.4 5 km N of Stroud, Oklahoma
  8. 1.9 5 km W of Arcadia, Oklahoma
  9. 2.1 5 km N of Stroud, Oklahoma
  10. 1.7 7 km E of Guthrie, Oklahoma
  11. 1.6 5 km N of Stroud, Oklahoma
  12. 1.6 1 km WNW of Coyle, Oklahoma
  13. 2.4 11 km NW of Edmond, Oklahoma
  14. 2.3 11 km NW of Edmond, Oklahoma
  15. 1.7 10 km NE of Kendrick, 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 2016-04-07 — 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.