QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6ml

7 km WSW of Horntown, Oklahoma

· 29 km deep · released about 3.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hughes County 6 kmSeminole County 28 kmOkfuskee County 45 kmPontotoc County 51 kmCoal County 53 kmPittsburg County 54 kmPottawatomie County 61 kmMcIntosh County 68 kmOkmulgee 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 3.6 (ml)
Depth
29 km below the surface
Felt
22 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
Nearest
Hughes County, 6 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1933 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 22 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 43,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 8.2× more

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 35.0590, -96.3168. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hughes County, OK 6 km (4 mi) W of here earthquakes near Hughes County
Seminole County, OK 28 km (18 mi) ESE of here earthquakes near Seminole County
Okfuskee County, OK 45 km (28 mi) S of here earthquakes near Okfuskee County
Pontotoc County, OK 51 km (32 mi) NE of here earthquakes near Pontotoc County
Coal County, OK 53 km (33 mi) N of here earthquakes near Coal County
Pittsburg County, OK 54 km (33 mi) WNW of here earthquakes near Pittsburg County

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

Aftershocks so far

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

  1. 1.9 5 km SE of Calvin, Oklahoma
  2. 2.0 4 km SE of Dustin, Oklahoma
  3. 1.6 6 km NE of Lamar, Oklahoma
  4. 1.6 4 km ENE of Lamar, Oklahoma
  5. 1.8 14 km NNE of Arpelar, Oklahoma
  6. 1.7 14 km NNE of Arpelar, Oklahoma
  7. 1.6 5 km NNE of Sasakwa, Oklahoma
  8. 1.7 12 km NNE of Arpelar, Oklahoma
  9. 1.9 11 km E of Lamar, Oklahoma
  10. 1.6 6 km S of Yeager, Oklahoma
  11. 1.6 6 km S of Yeager, Oklahoma
  12. 1.6 7 km ESE of Arpelar, Oklahoma
  13. 1.8 6 km SSE of Yeager, Oklahoma
  14. 1.5 8 km NNE of Stonewall, Oklahoma
  15. 1.7 5 km SSE of Yeager, 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.