QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

5 km SE of Granite, Oklahoma

· 14 km deep · released about 20 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Greer County 19 kmKiowa County 33 kmJackson County 37 kmBeckham County 49 kmHarmon County 50 kmWashita County 52 kmTillman County 72 kmHardeman County 80 kmCollingsworth County 85 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 1.9 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Greer County, 19 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2208 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 20 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 34.9262, -99.3462. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Greer County, OK 19 km (12 mi) E of here earthquakes near Greer County
Kiowa County, OK 33 km (21 mi) W of here earthquakes near Kiowa County
Jackson County, OK 37 km (23 mi) N of here earthquakes near Jackson County
Beckham County, OK 49 km (31 mi) SE of here earthquakes near Beckham County
Harmon County, OK 50 km (31 mi) ENE of here earthquakes near Harmon County
Washita County, OK 52 km (32 mi) SW of here earthquakes near Washita County

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

Aftershocks so far

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

  1. 1.8 9 km NNE of Friendship, Oklahoma
  2. 1.5 16 km SSW of Sayre, Oklahoma
  3. 1.6 6 km S of Carter, Oklahoma
  4. 1.5 3 km NNE of Cooperton, Oklahoma
  5. 1.6 4 km N of Cooperton, Oklahoma
  6. 1.6 6 km NE of Cooperton, Oklahoma
  7. 1.6 7 km NNE of Cooperton, Oklahoma
  8. 2.1 8 km SSW of Roosevelt, Oklahoma
  9. 1.6 6 km NNE of Cooperton, Oklahoma
  10. 1.7 6 km NW of Cooperton, Oklahoma
  11. 1.6 8 km NE of Cooperton, Oklahoma
  12. 1.8 9 km NNE of Cooperton, Oklahoma
  13. 1.6 7 km NW of Cooperton, Oklahoma
  14. 1.6 3 km NE of Headrick, Oklahoma
  15. 1.7 6 km NNW of Cooperton, 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.