QuakeIndex

quarry blast · reviewed by a seismologist

M 1.5ml

9 km SSE of Ada, Oklahoma

· 0.0 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Pontotoc County 6 kmCoal County 34 kmJohnston County 42 kmMurray County 46 kmSeminole County 52 kmHughes County 53 kmGarvin County 62 kmPottawatomie County 64 kmAtoka County 65 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
Pontotoc County, 6 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1145 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 6.2 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 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 34.6937, -96.6398. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Pontotoc County, OK 6 km (4 mi) ESE of here earthquakes near Pontotoc County
Coal County, OK 34 km (21 mi) WNW of here earthquakes near Coal County
Johnston County, OK 42 km (26 mi) N of here earthquakes near Johnston County
Murray County, OK 46 km (28 mi) ENE of here earthquakes near Murray County
Seminole County, OK 52 km (32 mi) S of here earthquakes near Seminole County
Hughes County, OK 53 km (33 mi) SW of here earthquakes near Hughes County

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

Aftershocks so far

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

  1. 1.5 9 km SSE of Wapanucka, Oklahoma
  2. 1.6 6 km E of Francis, Oklahoma
  3. 1.7 5 km SE of Mill Creek, Oklahoma
  4. 1.5 3 km NNW of Mill Creek, Oklahoma
  5. 1.6 3 km SW of Fitzhugh, Oklahoma
  6. 1.5 3 km SSW of Mill Creek, Oklahoma
  7. 1.5 3 km SW of Mill Creek, Oklahoma
  8. 1.6 7 km SSE of Tupelo, Oklahoma
  9. 2.2 5 km SW of Spaulding, Oklahoma
  10. 1.5 8 km N of Mill Creek, Oklahoma
  11. 1.6 3 km SW of Mill Creek, Oklahoma
  12. 2.3 7 km E of Ada, Oklahoma
  13. 1.5 4 km NE of Fitzhugh, Oklahoma
  14. 1.5 8 km SSE of Wapanucka, Oklahoma
  15. 1.5 9 km SW of Lehigh, 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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