QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

8 km SE of Zenda, Kansas

· 5.0 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingman County 20 kmHarper County 26 kmBarber County 45 kmPratt County 54 kmReno County 64 kmSumner County 67 kmAlfalfa County 74 kmSedgwick County 75 kmGrant 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 2.3 (mb_lg)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Kingman County, 20 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3201 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 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 37.3866, -98.2243. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingman County, KS 20 km (12 mi) SSW of here earthquakes near Kingman County
Harper County, KS 26 km (16 mi) NNW of here earthquakes near Harper County
Barber County, KS 45 km (28 mi) ENE of here earthquakes near Barber County
Pratt County, KS 54 km (34 mi) ESE of here earthquakes near Pratt County
Reno County, KS 64 km (40 mi) SSW of here earthquakes near Reno County
Sumner County, KS 67 km (41 mi) WNW of here earthquakes near Sumner County

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

Aftershocks so far

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

  1. 3.0 4 km E of Freeport, Kansas
  2. 3.0 4 km E of Freeport, Kansas
  3. 2.3 2 km SSE of Freeport, Kansas
  4. 2.4 3 km SSE of Danville, Kansas
  5. 2.1 9 km W of Bluff City, Kansas
  6. 2.4 8 km ENE of Hazelton, Kansas
  7. 1.9 4 km NNE of Anthony, Kansas
  8. 1.9 1 km NNW of Milan, Kansas
  9. 1.9 3 km E of Freeport, Kansas
  10. 1.6 7 km E of Manchester, Oklahoma
  11. 1.6 2 km E of Freeport, Kansas
  12. 1.8 6 km SSW of Freeport, Kansas
  13. 1.7 1 km NNW of Milan, Kansas
  14. 2.5 8 km NE of Hazelton, Kansas
  15. 1.5 6 km ESE of Freeport, 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.