QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

7 km WNW of Healdton, Oklahoma

· 14 km deep · released about 430 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carter County 25 kmJefferson County 31 kmStephens County 36 kmLove County 45 kmMurray County 51 kmGarvin County 54 kmMontague County 67 kmCotton County 75 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
14 km below the surface
Felt
10 reports · strongest reported intensity IV
Nearest
Carter County, 25 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 853 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 430 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 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 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 34.2635, -97.5583. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carter County, OK 25 km (15 mi) W of here earthquakes near Carter County
Jefferson County, OK 31 km (19 mi) NE of here earthquakes near Jefferson County
Stephens County, OK 36 km (23 mi) SE of here earthquakes near Stephens County
Love County, OK 45 km (28 mi) NW of here earthquakes near Love County
Murray County, OK 51 km (32 mi) WSW of here earthquakes near Murray County
Garvin County, OK 54 km (34 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. 1.6 7 km SSE of Ratliff City, Oklahoma
  2. 1.6 5 km SSE of Ratliff City, Oklahoma
  3. 1.9 7 km SSE of Ratliff City, Oklahoma
  4. 1.7 8 km SSE of Ratliff City, Oklahoma
  5. 1.6 4 km SE of Ratliff City, Oklahoma
  6. 1.6 5 km SSE of Ratliff City, Oklahoma
  7. 1.6 6 km SSE of Ratliff City, Oklahoma
  8. 1.5 5 km SSE of Ratliff City, Oklahoma
  9. 1.5 5 km SSE of Ratliff City, Oklahoma
  10. 1.7 6 km SE of Ratliff City, Oklahoma
  11. 1.7 4 km N of Velma, Oklahoma
  12. 1.6 7 km N of Velma, Oklahoma
  13. 1.5 4 km NNE of Velma, Oklahoma
  14. 1.9 4 km N of Velma, Oklahoma
  15. 1.7 4 km NNE of Velma, 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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