QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

11 km SE of Bluff City, Kansas

· 4.7 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 22 kmHarper County 32 kmSumner County 39 kmAlfalfa County 55 kmKay County 62 kmGarfield County 68 kmKingman County 70 kmBarber County 83 kmSedgwick County 83 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 1.6 (ml)
Depth
4.7 km below the surface
Felt
no reports yet
Nearest
Grant County, 22 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3565 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 36.9890, -97.8020. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 22 km (14 mi) N of here earthquakes near Grant County
Harper County, KS 32 km (20 mi) SE of here earthquakes near Harper County
Sumner County, KS 39 km (24 mi) SW of here earthquakes near Sumner County
Alfalfa County, OK 55 km (34 mi) ENE of here earthquakes near Alfalfa County
Kay County, OK 62 km (38 mi) WNW of here earthquakes near Kay County
Garfield County, OK 68 km (42 mi) N of here earthquakes near Garfield 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. 3.1 4 km ESE of Caldwell, Kansas
  2. 1.8 5 km ENE of Mayfield, Kansas
  3. 1.5 3 km NW of Anthony, Kansas
  4. 1.5 8 km NNW of Argonia, Kansas
  5. 2.5 5 km WNW of Renfrow, Oklahoma
  6. 2.9 5 km WNW of Renfrow, Oklahoma
  7. 1.6 5 km ENE of Danville, Kansas
  8. 2.0 Kansas
  9. 2.5 3 km NW of Anthony, Kansas
  10. 1.6 5 km ESE of Manchester, Oklahoma
  11. 1.7 4 km SW of Bluff City, Kansas
  12. 3.0 4 km SSE of Braman, Oklahoma
  13. 1.6 10 km ESE of Bluff City, Kansas
  14. 2.6 7 km E of Nescatunga, Oklahoma
  15. 2.8 7 km E of Nescatunga, 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.