QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5mb_lg

8 km SSE of Spivey, Kansas

· 5.0 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kingman County 21 kmHarper County 21 kmBarber County 51 kmSumner County 59 kmPratt County 61 kmReno County 65 kmSedgwick County 70 kmGrant County 72 kmAlfalfa County 73 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 2.5 (mb_lg)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Kingman County, 21 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3181 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 37.3682, -98.1440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kingman County, KS 21 km (13 mi) S of here earthquakes near Kingman County
Harper County, KS 21 km (13 mi) NNW of here earthquakes near Harper County
Barber County, KS 51 km (31 mi) ENE of here earthquakes near Barber County
Sumner County, KS 59 km (37 mi) WNW of here earthquakes near Sumner County
Pratt County, KS 61 km (38 mi) ESE of here earthquakes near Pratt County
Reno County, KS 65 km (40 mi) S of here earthquakes near Reno County

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

Aftershocks so far

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

  1. 1.8 2 km SSE of Freeport, Kansas
  2. 2.3 2 km SSE of Freeport, Kansas
  3. 1.9 5 km ESE of Harper, Kansas
  4. 1.7 5 km SSW of Bluff City, Kansas
  5. 2.6 4 km E of Freeport, Kansas
  6. 2.2 3 km E of Freeport, Kansas
  7. 1.5 9 km W of Bluff City, Kansas
  8. 1.7 4 km ENE of Danville, Kansas
  9. 2.6 4 km SSE of Manchester, Oklahoma
  10. 1.7 6 km NNE of Bluff City, Kansas
  11. 2.4 4 km E of Freeport, Kansas
  12. 2.3 3 km E of Freeport, Kansas
  13. 2.2 4 km E of Freeport, Kansas
  14. 1.8 Kansas
  15. 2.1 3 km E 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.