QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

7 km WNW of Healdton, Oklahoma

· 13 km deep · released about 510 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carter County 26 kmJefferson County 30 kmStephens County 36 kmLove County 44 kmMurray County 53 kmGarvin County 56 kmMontague County 65 kmCotton County 74 kmCooke County 76 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 2.8 (ml)
Depth
13 km below the surface
Felt
7 reports · strongest reported intensity IV
Nearest
Carter County, 26 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 837 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 7 people have reported feeling it to USGS.

How big was it?

This earthquake released about 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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 34.2528, -97.5707. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carter County, OK 26 km (16 mi) W of here earthquakes near Carter County
Jefferson County, OK 30 km (18 mi) ENE of here earthquakes near Jefferson County
Stephens County, OK 36 km (23 mi) SE of here earthquakes near Stephens County
Love County, OK 44 km (28 mi) NW of here earthquakes near Love County
Murray County, OK 53 km (33 mi) WSW of here earthquakes near Murray County
Garvin County, OK 56 km (35 mi) SSW of here earthquakes near Garvin County

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

Aftershocks so far

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

  1. 1.7 6 km SE of Ratliff City, Oklahoma
  2. 1.6 7 km SSE of Ratliff City, Oklahoma
  3. 2.4 7 km SSE of Ratliff City, Oklahoma
  4. 1.7 9 km SSE of Ratliff City, Oklahoma
  5. 1.8 9 km SSE of Ratliff City, Oklahoma
  6. 1.6 7 km SSE of Ratliff City, Oklahoma
  7. 1.6 7 km SSE of Ratliff City, Oklahoma
  8. 1.6 5 km SSE of Ratliff City, Oklahoma
  9. 1.9 7 km SSE of Ratliff City, Oklahoma
  10. 1.7 8 km SSE of Ratliff City, Oklahoma
  11. 1.6 4 km SE of Ratliff City, Oklahoma
  12. 1.6 5 km SSE of Ratliff City, Oklahoma
  13. 1.6 6 km SSE of Ratliff City, Oklahoma
  14. 1.5 5 km SSE of Ratliff City, Oklahoma
  15. 1.5 5 km SSE of Ratliff City, 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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