QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6 km N of Caldwell, Kansas

· 4.6 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 19 kmGrant County 37 kmHarper County 42 kmKay County 51 kmSedgwick County 67 kmCowley County 70 kmKingman County 70 kmAlfalfa County 75 kmGarfield County 81 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 1.8 (ml)
Depth
4.6 km below the surface
Felt
no reports yet
Nearest
Sumner County, 19 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3659 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 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 37.0892, -97.6060. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 19 km (12 mi) SSW of here earthquakes near Sumner County
Grant County, OK 37 km (23 mi) NNE of here earthquakes near Grant County
Harper County, KS 42 km (26 mi) ESE of here earthquakes near Harper County
Kay County, OK 51 km (32 mi) NW of here earthquakes near Kay County
Sedgwick County, KS 67 km (42 mi) S of here earthquakes near Sedgwick County
Cowley County, KS 70 km (44 mi) WSW of here earthquakes near Cowley County

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

Aftershocks so far

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

  1. 2.7 5 km SSE of Freeport, Kansas
  2. 3.5 5 km SSE of Freeport, Kansas
  3. 3.3 2 km WNW of Deer Creek, Oklahoma
  4. 2.2 0 km N of Manchester, Oklahoma
  5. 2.7 3 km ENE of Medford, Oklahoma
  6. 1.7 8 km WSW of Hunnewell, Kansas
  7. 2.9 3 km ENE of Medford, Oklahoma
  8. 3.4 1 km ENE of Renfrow, Oklahoma
  9. 3.1 5 km NNE of Jefferson, Oklahoma
  10. 2.7 3 km ENE of Medford, Oklahoma
  11. 2.7 2 km NW of Deer Creek, Oklahoma
  12. 1.6 8 km E of Caldwell, Kansas
  13. 1.8 3 km ENE of Freeport, Kansas
  14. 2.2 5 km WNW of Caldwell, Kansas
  15. 1.6 5 km WNW 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

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