QuakeIndex

quarry blast · reviewed by a seismologist

M 1.5ml

9 km SE of Katie, Oklahoma

· 0.0 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Murray County 19 kmGarvin County 21 kmCarter County 30 kmStephens County 53 kmMcClain County 57 kmPontotoc County 58 kmJohnston County 61 kmLove County 63 kmJefferson County 70 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
0.0 km below the surface
Felt
no reports yet
Nearest
Murray County, 19 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2145 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 5.6 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 2,700,000× 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 5.6 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 34.5220, -97.2750. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Murray County, OK 19 km (12 mi) WNW of here earthquakes near Murray County
Garvin County, OK 21 km (13 mi) S of here earthquakes near Garvin County
Carter County, OK 30 km (19 mi) N of here earthquakes near Carter County
Stephens County, OK 53 km (33 mi) E of here earthquakes near Stephens County
McClain County, OK 57 km (36 mi) SSE of here earthquakes near McClain County
Pontotoc County, OK 58 km (36 mi) WSW of here earthquakes near Pontotoc County

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

Aftershocks so far

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

  1. 1.6 10 km SE of Ratliff City, Oklahoma
  2. 1.7 15 km NE of Healdton, Oklahoma
  3. 1.6 11 km SE of Ratliff City, Oklahoma
  4. 2.7 12 km SE of Ratliff City, Oklahoma
  5. 1.5 13 km SE of Ratliff City, Oklahoma
  6. 1.7 14 km SE of Ratliff City, Oklahoma
  7. 1.6 14 km NE of Healdton, Oklahoma
  8. 1.6 13 km SE of Ratliff City, Oklahoma
  9. 1.6 10 km SE of Ratliff City, Oklahoma
  10. 1.7 11 km SE of Ratliff City, Oklahoma
  11. 2.2 10 km SE of Ratliff City, Oklahoma
  12. 1.8 9 km SE of Ratliff City, Oklahoma
  13. 1.7 10 km SE of Ratliff City, Oklahoma
  14. 1.7 12 km SE of Ratliff City, Oklahoma
  15. 1.7 14 km NE of Healdton, 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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