QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

2 km S of Nescatunga, Oklahoma

· 6.3 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 15 kmGrant County 33 kmGarfield County 51 kmHarper County 52 kmMajor County 58 kmWoods County 63 kmBarber County 72 kmSumner County 82 kmKingfisher County 89 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 3.3 (ml)
Depth
6.3 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 15 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3754 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 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× more

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 36.7285, -98.1566. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 15 km (9 mi) E of here earthquakes near Alfalfa County
Grant County, OK 33 km (21 mi) WSW of here earthquakes near Grant County
Garfield County, OK 51 km (32 mi) NW of here earthquakes near Garfield County
Harper County, KS 52 km (32 mi) S of here earthquakes near Harper County
Major County, OK 58 km (36 mi) NE of here earthquakes near Major County
Woods County, OK 63 km (39 mi) E of here earthquakes near Woods County

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

Aftershocks so far

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

  1. 2.5 9 km ESE of Avard, Oklahoma
  2. 2.8 9 km ESE of Jefferson, Oklahoma
  3. 2.7 9 km W of Deer Creek, Oklahoma
  4. 2.8 2 km WSW of Renfrow, Oklahoma
  5. 2.2 4 km WSW of Bluff City, Kansas
  6. 2.7 8 km S of Byron, Oklahoma
  7. 2.8 9 km E of Avard, Oklahoma
  8. 2.9 2 km S of Renfrow, Oklahoma
  9. 3.0 8 km ESE of Pond Creek, Oklahoma
  10. 2.6 5 km NNW of Ames, Oklahoma
  11. 3.2 4 km NE of Meno, Oklahoma
  12. 2.8 8 km ESE of Pond Creek, Oklahoma
  13. 1.9 6 km SW of Manchester, Oklahoma
  14. 1.8 6 km SW of Manchester, Oklahoma
  15. 2.8 4 km SSW of Renfrow, 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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