QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

5 km NE of Anthony, Kansas

· 5.0 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 7 kmKingman County 42 kmSumner County 44 kmGrant County 48 kmAlfalfa County 59 kmBarber County 62 kmSedgwick County 72 kmPratt County 83 kmReno County 85 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 3.1 (ml)
Depth
5.0 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Harper County, 7 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 37.1913, -97.9893. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 7 km (4 mi) E of here earthquakes near Harper County
Kingman County, KS 42 km (26 mi) SSE of here earthquakes near Kingman County
Sumner County, KS 44 km (27 mi) W of here earthquakes near Sumner County
Grant County, OK 48 km (30 mi) NNW of here earthquakes near Grant County
Alfalfa County, OK 59 km (37 mi) NNE of here earthquakes near Alfalfa County
Barber County, KS 62 km (38 mi) E of here earthquakes near Barber County

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

Aftershocks so far

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

  1. 1.7 5 km ENE of Mayfield, Kansas
  2. 1.6 3 km ENE of Freeport, Kansas
  3. 1.7 5 km SSE of Harper, Kansas
  4. 1.6 6 km SSE of Harper, Kansas
  5. 2.6 7 km SSW of Cheney, Kansas
  6. 3.1 4 km ESE of Caldwell, Kansas
  7. 1.8 5 km ENE of Mayfield, Kansas
  8. 1.5 3 km NW of Anthony, Kansas
  9. 1.5 8 km NNW of Argonia, Kansas
  10. 2.5 5 km WNW of Renfrow, Oklahoma
  11. 2.9 5 km WNW of Renfrow, Oklahoma
  12. 1.6 5 km ENE of Danville, Kansas
  13. 2.0 Kansas
  14. 2.5 3 km NW of Anthony, Kansas
  15. 1.6 5 km ESE 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.