QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

3 km WNW of Nash, Oklahoma

· 4.7 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 22 kmGrant County 29 kmGarfield County 43 kmHarper County 57 kmMajor County 57 kmWoods County 70 kmBarber County 81 kmSumner County 82 kmKingfisher County 82 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 2.9 (ml)
Depth
4.7 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 22 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3663 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 36.6770, -98.0860. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 22 km (14 mi) ESE of here earthquakes near Alfalfa County
Grant County, OK 29 km (18 mi) WSW of here earthquakes near Grant County
Garfield County, OK 43 km (26 mi) NW of here earthquakes near Garfield County
Harper County, KS 57 km (35 mi) S of here earthquakes near Harper County
Major County, OK 57 km (36 mi) NE of here earthquakes near Major County
Woods County, OK 70 km (43 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

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

  1. 2.7 5 km SSE of Bluff City, Kansas
  2. 2.1 5 km SSE of Bluff City, Kansas
  3. 2.4 5 km SSE of Bluff City, Kansas
  4. 2.8 7 km S of Anthony, Kansas
  5. 2.9 3 km SSE of Bluff City, KS
  6. 2.9 2 km NNW of Fairmont, Oklahoma
  7. 2.6 6 km NNE of Cleo Springs, Oklahoma
  8. 2.7 3 km ENE of Jet, Oklahoma
  9. 2.6 6 km NNE of Cleo Springs, Oklahoma
  10. 3.0 8 km WSW of Deer Creek, Oklahoma
  11. 3.5 9 km W of Deer Creek, Oklahoma
  12. 3.1 3 km WSW of Nash, Oklahoma
  13. 3.6 3 km WSW of Nash, Oklahoma
  14. 2.7 10 km SSE of Capron, Oklahoma
  15. 1.7 5 km E of Manchester, 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.