QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

6 km ENE of Caldwell, Kansas

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 21 kmGrant County 37 kmKay County 44 kmHarper County 49 kmCowley County 65 kmSedgwick County 70 kmKingman County 77 kmGarfield County 79 kmAlfalfa County 79 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
5.6 km below the surface
Felt
1 report · strongest reported intensity IV
Nearest
Sumner County, 21 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3590 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 1,300 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 37.0553, -97.5368. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 21 km (13 mi) S of here earthquakes near Sumner County
Grant County, OK 37 km (23 mi) NE of here earthquakes near Grant County
Kay County, OK 44 km (27 mi) NW of here earthquakes near Kay County
Harper County, KS 49 km (31 mi) ESE of here earthquakes near Harper County
Cowley County, KS 65 km (40 mi) WSW of here earthquakes near Cowley County
Sedgwick County, KS 70 km (43 mi) S of here earthquakes near Sedgwick 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. 3.9 6 km NNE of Wakita, Oklahoma
  2. 1.5 4 km NNW of Bluff City, Kansas
  3. 1.8 5 km S of Argonia, Kansas
  4. 2.7 6 km NNW of Jefferson, Oklahoma
  5. 1.6 1 km NW of Freeport, Kansas
  6. 2.0 1 km NW of Freeport, Kansas
  7. 2.5 6 km NNW of Jefferson, Oklahoma
  8. 2.0 6 km ENE of Caldwell, Kansas
  9. 2.3 1 km SE of Anthony, Kansas
  10. 1.8 6 km N of Caldwell, Kansas
  11. 2.6 3 km W of Braman, Oklahoma
  12. 2.9 12 km W of Belle Plaine, Kansas
  13. 3.0 5 km ESE of Jefferson, Oklahoma
  14. 2.6 6 km NNE of Wakita, Oklahoma
  15. 2.1 7 km E of Bluff City, 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.