QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

6 km S of Anthony, Kansas

· 6.3 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 11 kmGrant County 40 kmAlfalfa County 48 kmSumner County 50 kmKingman County 52 kmBarber County 60 kmSedgwick County 82 kmGarfield County 82 kmKay 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 3.0 (ml)
Depth
6.3 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Harper County, 11 km NNW
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. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 37.0948, -98.0283. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 11 km (7 mi) SSE of here earthquakes near Harper County
Grant County, OK 40 km (25 mi) NNW of here earthquakes near Grant County
Alfalfa County, OK 48 km (30 mi) NNE of here earthquakes near Alfalfa County
Sumner County, KS 50 km (31 mi) WSW of here earthquakes near Sumner County
Kingman County, KS 52 km (32 mi) SSE of here earthquakes near Kingman County
Barber County, KS 60 km (37 mi) ESE of here earthquakes near Barber County

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

Aftershocks so far

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

  1. 2.8 4 km SSW of Renfrow, Oklahoma
  2. 2.9 6 km SW of Manchester, Oklahoma
  3. 2.1 6 km NNE of Bluff City, Kansas
  4. 1.7 12 km NNW of Caldwell, Kansas
  5. 1.8 Kansas
  6. 1.5 5 km ESE of Bluff City, Kansas
  7. 1.7 12 km NNW of Caldwell, Kansas
  8. 1.7 11 km W of Caldwell, Kansas
  9. 2.1 12 km NNW of Caldwell, Kansas
  10. 2.4 12 km NNW of Caldwell, Kansas
  11. 3.4 3 km SSW of Renfrow, Oklahoma
  12. 2.0 12 km NNW of Caldwell, Kansas
  13. 3.0 10 km SW of Wakita, Oklahoma
  14. 1.6 13 km NNW of Caldwell, Kansas
  15. 2.2 12 km NNW 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.