QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

6 km SSE of Calvin, Oklahoma

· 5.0 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Hughes County 16 kmCoal County 38 kmPittsburg County 42 kmSeminole County 45 kmPontotoc County 49 kmAtoka County 60 kmOkfuskee County 62 kmMcIntosh County 70 kmPottawatomie County 75 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 1.5 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Hughes County, 16 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1409 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 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 34.9168, -96.2128. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hughes County, OK 16 km (10 mi) SSE of here earthquakes near Hughes County
Coal County, OK 38 km (23 mi) N of here earthquakes near Coal County
Pittsburg County, OK 42 km (26 mi) W of here earthquakes near Pittsburg County
Seminole County, OK 45 km (28 mi) SE of here earthquakes near Seminole County
Pontotoc County, OK 49 km (30 mi) ENE of here earthquakes near Pontotoc County
Atoka County, OK 60 km (38 mi) NNW of here earthquakes near Atoka County

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

Aftershocks so far

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

  1. 1.5 7 km NNW of Savanna, Oklahoma
  2. 2.0 8 km NNW of Savanna, Oklahoma
  3. 1.6 9 km W of McAlester, Oklahoma
  4. 1.6 7 km NNW of Savanna, Oklahoma
  5. 2.4 8 km N of Savanna, Oklahoma
  6. 1.5 6 km N of Savanna, Oklahoma
  7. 1.7 4 km WSW of Arpelar, Oklahoma
  8. 2.3 7 km E of Ada, Oklahoma
  9. 1.8 5 km ESE of Horntown, Oklahoma
  10. 3.4 9 km N of Stonewall, Oklahoma
  11. 1.5 10 km S of Pittsburg, Oklahoma
  12. 1.6 9 km SSE of Ada, Oklahoma
  13. 1.5 1 km ESE of Arpelar, Oklahoma
  14. 1.5 4 km W of Arpelar, Oklahoma
  15. 2.4 8 km SSE of Ada, 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.