QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4mb_lg

Kansas

· 5.0 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 16 kmSumner County 37 kmKingman County 38 kmGrant County 54 kmSedgwick County 61 kmBarber County 68 kmAlfalfa County 70 kmReno County 77 kmPratt County 84 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 2.4 (mb_lg)
Depth
5.0 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Harper County, 16 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1316 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 37.2678, -97.9138. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 16 km (10 mi) ENE of here earthquakes near Harper County
Sumner County, KS 37 km (23 mi) W of here earthquakes near Sumner County
Kingman County, KS 38 km (23 mi) SSE of here earthquakes near Kingman County
Grant County, OK 54 km (34 mi) NNW of here earthquakes near Grant County
Sedgwick County, KS 61 km (38 mi) SW of here earthquakes near Sedgwick County
Barber County, KS 68 km (43 mi) E of here earthquakes near Barber County

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

Aftershocks so far

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

  1. 2.4 1 km SE of Danville, Kansas
  2. 2.6 5 km WSW of Danville, Kansas
  3. 2.5 6 km SSE of Spivey, Kansas
  4. 2.4 9 km S of Spivey, Kansas
  5. 2.6 5 km S of Milton, Kansas
  6. 1.6 12 km SSE of Waldron, Kansas
  7. 2.3 8 km SE of Wakita, Oklahoma
  8. 2.4 3 km WSW of Harper, Kansas
  9. 3.3 7 km SW of Danville, Kansas
  10. 1.6 3 km ESE of Manchester, Oklahoma
  11. 2.2 6 km NW of Medford, Oklahoma
  12. 1.8 6 km SSE of Manchester, Oklahoma
  13. 1.7 7 km SSE of Manchester, Oklahoma
  14. 1.9 7 km SSE of Manchester, Oklahoma
  15. 1.5 9 km S 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2022-01-31 — it released about 1,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.