QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

2 km S of Caldwell, Kansas

· 5.7 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 27 kmGrant County 29 kmHarper County 45 kmKay County 47 kmAlfalfa County 71 kmGarfield County 72 kmCowley County 73 kmSedgwick County 76 kmKingman County 77 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 1.5 (ml)
Depth
5.7 km below the surface
Felt
no reports yet
Nearest
Sumner County, 27 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3556 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 5.4 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 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 37.0095, -97.6088. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 27 km (17 mi) SSW of here earthquakes near Sumner County
Grant County, OK 29 km (18 mi) NNE of here earthquakes near Grant County
Harper County, KS 45 km (28 mi) ESE of here earthquakes near Harper County
Kay County, OK 47 km (29 mi) WNW of here earthquakes near Kay County
Alfalfa County, OK 71 km (44 mi) ENE of here earthquakes near Alfalfa County
Garfield County, OK 72 km (45 mi) NNE 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. 1.9 7 km SSE of Argonia, Kansas
  2. 2.1 10 km SE of Bluff City, Kansas
  3. 2.1 7 km SSE of Argonia, Kansas
  4. 1.6 7 km SSE of Argonia, Kansas
  5. 1.6 4 km NE of Anthony, Kansas
  6. 2.2 3 km NW of Freeport, Kansas
  7. 1.8 4 km S of Caldwell, Kansas
  8. 1.5 5 km ENE of Milan, Kansas
  9. 3.3 6 km NE of Hunter, Oklahoma
  10. 2.9 7 km E of Nescatunga, Oklahoma
  11. 2.9 Oklahoma
  12. 2.7 2 km NNW of Lamont, Oklahoma
  13. 2.1 2 km E of Anthony, Kansas
  14. 1.5 5 km NE of Anthony, Kansas
  15. 2.5 5 km E of Pond Creek, 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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