QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

5 km NE of Anthony, Kansas

· 5.2 km deep · released about 1.9 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 7 kmKingman County 43 kmSumner County 44 kmGrant County 48 kmAlfalfa County 59 kmBarber County 62 kmSedgwick County 72 kmPratt County 84 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 3.4 (ml)
Depth
5.2 km below the surface
Felt
1 report · strongest reported intensity II
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. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 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 37.1898, -97.9905. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 7 km (4 mi) E of here earthquakes near Harper County
Kingman County, KS 43 km (26 mi) SSE of here earthquakes near Kingman County
Sumner County, KS 44 km (28 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

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

  1. 1.8 5 km W of Argonia, Kansas
  2. 1.9 4 km WSW of Bluff City, Kansas
  3. 1.7 5 km SE of Manchester, Oklahoma
  4. 1.7 3 km ENE of Freeport, Kansas
  5. 3.4 10 km SSW of Spivey, Kansas
  6. 1.7 5 km ENE of Mayfield, Kansas
  7. 1.6 3 km ENE of Freeport, Kansas
  8. 1.7 5 km SSE of Harper, Kansas
  9. 1.6 6 km SSE of Harper, Kansas
  10. 2.6 7 km SSW of Cheney, Kansas
  11. 3.1 4 km ESE of Caldwell, Kansas
  12. 1.8 5 km ENE of Mayfield, Kansas
  13. 1.5 3 km NW of Anthony, Kansas
  14. 1.5 8 km NNW of Argonia, Kansas
  15. 2.5 5 km WNW 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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