QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

5 km SSE of Bluff City, Kansas

· 6.5 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 26 kmGrant County 27 kmSumner County 38 kmAlfalfa County 54 kmKingman County 64 kmKay County 67 kmGarfield County 73 kmBarber County 78 kmSedgwick County 80 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 2.4 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Harper County, 26 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3683 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× the energy of this one
  4. This earthquake M 2.4 about 120 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 37.0313, -97.8425. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 26 km (16 mi) SE of here earthquakes near Harper County
Grant County, OK 27 km (17 mi) N of here earthquakes near Grant County
Sumner County, KS 38 km (24 mi) SW of here earthquakes near Sumner County
Alfalfa County, OK 54 km (34 mi) NE of here earthquakes near Alfalfa County
Kingman County, KS 64 km (40 mi) SSE of here earthquakes near Kingman County
Kay County, OK 67 km (41 mi) WNW of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 2.3 5 km NNE of Wakita, Oklahoma
  2. 3.3 10 km NW of Harper, Kansas
  3. 3.0 7 km NNW of Jefferson, Oklahoma
  4. 1.8 7 km ENE of Caldwell, Kansas
  5. 1.8 10 km ESE of Bluff City, Kansas
  6. 2.6 6 km NNW of Jefferson, Oklahoma
  7. 2.5 10 km ESE of Jefferson, Oklahoma
  8. 1.9 9 km NNW of Caldwell, Kansas
  9. 2.7 5 km NE of Medford, Oklahoma
  10. 2.0 6 km ENE of Caldwell, Kansas
  11. 3.3 7 km NNE of Wakita, Oklahoma
  12. 2.9 8 km ESE of Pond Creek, Oklahoma
  13. 1.6 6 km ENE of Caldwell, Kansas
  14. 2.7 6 km NNE of Wakita, Oklahoma
  15. 2.7 6 km ENE of Caldwell, Kansas

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.