QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

11 km ESE of Bluff City, Kansas

· 3.8 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 29 kmSumner County 31 kmHarper County 32 kmKay County 59 kmAlfalfa County 63 kmKingman County 66 kmSedgwick County 75 kmGarfield County 75 kmCowley County 83 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 1.9 (ml)
Depth
3.8 km below the surface
Felt
no reports yet
Nearest
Grant County, 29 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3828 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 18 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 37.0490, -97.7448. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 29 km (18 mi) N of here earthquakes near Grant County
Sumner County, KS 31 km (19 mi) SW of here earthquakes near Sumner County
Harper County, KS 32 km (20 mi) ESE of here earthquakes near Harper County
Kay County, OK 59 km (37 mi) WNW of here earthquakes near Kay County
Alfalfa County, OK 63 km (39 mi) NE of here earthquakes near Alfalfa County
Kingman County, KS 66 km (41 mi) SSE of here earthquakes near Kingman 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. 2.2 12 km NNW of Caldwell, Kansas
  2. 1.7 12 km NNW of Caldwell, Kansas
  3. 1.7 12 km NNW of Caldwell, Kansas
  4. 2.0 12 km NNW of Caldwell, Kansas
  5. 2.5 3 km SSE of Danville, Kansas
  6. 1.9 5 km NW of Mayfield, Kansas
  7. 2.5 6 km NW of Hunter, Oklahoma
  8. 2.8 6 km NNW of Hunter, Oklahoma
  9. 1.8 11 km W of Caldwell, Kansas
  10. 1.7 11 km W of Caldwell, Kansas
  11. 2.6 11 km W of Caldwell, Kansas
  12. 2.2 4 km NNE of Anthony, Kansas
  13. 1.6 1 km NNE of Manchester, Oklahoma
  14. 1.6 8 km N of Argonia, Kansas
  15. 1.6 11 km W 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.