QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

11 km N of Nescatunga, Oklahoma

· 5.0 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 22 kmGrant County 31 kmHarper County 37 kmGarfield County 61 kmBarber County 64 kmWoods County 67 kmSumner County 71 kmMajor County 71 kmKingman County 78 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
5.0 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 22 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3686 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 480 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 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 36.8547, -98.1280. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 22 km (14 mi) NE of here earthquakes near Alfalfa County
Grant County, OK 31 km (19 mi) WNW of here earthquakes near Grant County
Harper County, KS 37 km (23 mi) S of here earthquakes near Harper County
Garfield County, OK 61 km (38 mi) NNW of here earthquakes near Garfield County
Barber County, KS 64 km (40 mi) SE of here earthquakes near Barber County
Woods County, OK 67 km (42 mi) ENE of here earthquakes near Woods County

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

Aftershocks so far

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

  1. 2.5 5 km NNE of Medford, Oklahoma
  2. 2.8 6 km ESE of Wakita, Oklahoma
  3. 1.6 6 km SW of Manchester, Oklahoma
  4. 3.2 7 km W of Jet, Oklahoma
  5. 3.0 8 km SE of Byron, Oklahoma
  6. 2.1 4 km NNE of Freeport, Kansas
  7. 1.9 8 km SSE of Anthony, Kansas
  8. 2.5 12 km NNW of Lambert, Oklahoma
  9. 1.5 Kansas
  10. 1.6 2 km WSW of Bluff City, Kansas
  11. 2.5 6 km NNE of Medford, Oklahoma
  12. 2.7 8 km WNW of Medford, Oklahoma
  13. 3.0 6 km SE of Nescatunga, Oklahoma
  14. 2.7 Oklahoma
  15. 2.5 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.