QuakeIndex

quarry blast · reviewed by a seismologist

M 1.9ml

9 km SE of Katie, Oklahoma

· 0.0 km deep · released about 23 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Murray County 18 kmGarvin County 20 kmCarter County 31 kmStephens County 55 kmPontotoc County 56 kmMcClain County 57 kmJohnston County 61 kmLove County 64 kmJefferson County 71 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
0.0 km below the surface
Felt
no reports yet
Nearest
Murray County, 18 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1888 days ago

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

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 23 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 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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 34.5302, -97.2630. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Murray County, OK 18 km (11 mi) WNW of here earthquakes near Murray County
Garvin County, OK 20 km (13 mi) SSE of here earthquakes near Garvin County
Carter County, OK 31 km (19 mi) N of here earthquakes near Carter County
Stephens County, OK 55 km (34 mi) E of here earthquakes near Stephens County
Pontotoc County, OK 56 km (35 mi) WSW of here earthquakes near Pontotoc County
McClain County, OK 57 km (35 mi) SSE of here earthquakes near McClain County

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

Aftershocks so far

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

  1. 1.7 3 km WSW of Mill Creek, Oklahoma
  2. 1.9 8 km SSE of Ratliff City, Oklahoma
  3. 1.7 9 km SSE of Ratliff City, Oklahoma
  4. 2.0 9 km SSE of Ratliff City, Oklahoma
  5. 1.6 10 km SSE of Ratliff City, Oklahoma
  6. 1.9 9 km SSE of Ratliff City, Oklahoma
  7. 1.6 9 km SSE of Ratliff City, Oklahoma
  8. 1.6 7 km SSE of Ratliff City, Oklahoma
  9. 1.7 8 km SSE of Ratliff City, Oklahoma
  10. 1.6 8 km SSE of Ratliff City, Oklahoma
  11. 2.3 10 km SSE of Ratliff City, Oklahoma
  12. 1.9 9 km SSE of Ratliff City, Oklahoma
  13. 1.8 2 km S of Mill Creek, Oklahoma
  14. 2.1 11 km SE of Katie, Oklahoma
  15. 1.6 8 km W 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

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