QuakeIndex

quarry blast · reviewed by a seismologist

M 1.8ml

8 km SSE of Katie, Oklahoma

· 0.0 km deep · released about 13 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Murray County 22 kmGarvin County 22 kmCarter County 29 kmStephens County 50 kmMcClain County 58 kmLove County 61 kmPontotoc County 62 kmJohnston County 64 kmJefferson County 66 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 1.8 (ml)
Depth
0.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Murray County, 22 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1405 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 34.5080, -97.3130. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Murray County, OK 22 km (14 mi) W of here earthquakes near Murray County
Garvin County, OK 22 km (14 mi) S of here earthquakes near Garvin County
Carter County, OK 29 km (18 mi) N of here earthquakes near Carter County
Stephens County, OK 50 km (31 mi) E of here earthquakes near Stephens County
McClain County, OK 58 km (36 mi) SSE of here earthquakes near McClain County
Love County, OK 61 km (38 mi) N of here earthquakes near Love County

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

Aftershocks so far

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

  1. 2.1 7 km NNW of Velma, Oklahoma
  2. 1.6 9 km NNW of Velma, Oklahoma
  3. 1.9 7 km NNW of Velma, Oklahoma
  4. 2.7 7 km NNW of Velma, Oklahoma
  5. 2.0 6 km NNW of Velma, Oklahoma
  6. 1.7 6 km NNW of Velma, Oklahoma
  7. 1.7 8 km NNW of Velma, Oklahoma
  8. 1.7 7 km NNW of Velma, Oklahoma
  9. 1.5 5 km NNW of Velma, Oklahoma
  10. 1.7 7 km WNW of Davis, Oklahoma
  11. 2.1 7 km WNW of Davis, Oklahoma
  12. 1.5 6 km WNW of Davis, Oklahoma
  13. 1.6 7 km WNW of Davis, Oklahoma
  14. 2.2 7 km WNW of Davis, Oklahoma
  15. 1.6 7 km WNW of Davis, 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.