QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

1 km ENE of Arpelar, Oklahoma

· 5.6 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pittsburg County 19 kmHughes County 30 kmCoal County 51 kmMcIntosh County 53 kmAtoka County 62 kmLatimer County 62 kmSeminole County 64 kmOkfuskee County 67 kmPontotoc 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 1.6 (ml)
Depth
5.6 km below the surface
Felt
no reports yet
Nearest
Pittsburg County, 19 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1166 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 34.9468, -95.9517. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pittsburg County, OK 19 km (12 mi) W of here earthquakes near Pittsburg County
Hughes County, OK 30 km (18 mi) ESE of here earthquakes near Hughes County
Coal County, OK 51 km (32 mi) NE of here earthquakes near Coal County
McIntosh County, OK 53 km (33 mi) SSW of here earthquakes near McIntosh County
Atoka County, OK 62 km (39 mi) N of here earthquakes near Atoka County
Latimer County, OK 62 km (39 mi) W of here earthquakes near Latimer 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. 1.6 5 km S of Savanna, Oklahoma
  2. 1.8 5 km S of Savanna, Oklahoma
  3. 1.6 4 km S of Savanna, Oklahoma
  4. 1.6 13 km SSW of Indianola, Oklahoma
  5. 1.8 14 km NNE of Arpelar, Oklahoma
  6. 1.6 14 km SSW of Indianola, Oklahoma
  7. 1.9 10 km ESE of Pittsburg, Oklahoma
  8. 1.9 5 km S of Ashland, Oklahoma
  9. 2.5 12 km E of Crowder, Oklahoma
  10. 2.0 7 km ESE of Salem, Oklahoma
  11. 1.8 1 km SE of Pittsburg, Oklahoma
  12. 1.8 12 km SSW of Hanna, Oklahoma
  13. 2.0 12 km SSW of Hanna, Oklahoma
  14. 1.5 5 km NW of Horntown, Oklahoma
  15. 2.2 5 km SW of Spaulding, 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.