QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

5 km SSE of Freeport, Kansas

· 5.0 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 22 kmSumner County 31 kmGrant County 41 kmKingman County 52 kmAlfalfa County 65 kmSedgwick County 67 kmKay County 72 kmBarber County 76 kmGarfield County 87 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 (ml)
Depth
5.0 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Harper County, 22 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3537 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

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 37.1577, -97.8262. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 22 km (13 mi) E of here earthquakes near Harper County
Sumner County, KS 31 km (19 mi) WSW of here earthquakes near Sumner County
Grant County, OK 41 km (26 mi) N of here earthquakes near Grant County
Kingman County, KS 52 km (32 mi) SSE of here earthquakes near Kingman County
Alfalfa County, OK 65 km (40 mi) NE of here earthquakes near Alfalfa County
Sedgwick County, KS 67 km (41 mi) SSW of here earthquakes near Sedgwick County

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

Aftershocks so far

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

  1. 2.7 8 km W of Deer Creek, Oklahoma
  2. 1.7 3 km SSE of Danville, Kansas
  3. 2.4 3 km SSE of Danville, Kansas
  4. 3.0 9 km ESE of Wakita, Oklahoma
  5. 2.8 5 km NE of Medford, Oklahoma
  6. 2.5 6 km S of Manchester, Oklahoma
  7. 1.6 11 km ESE of Bluff City, Kansas
  8. 1.6 4 km SE of Caldwell, Kansas
  9. 2.7 7 km NNE of Wakita, Oklahoma
  10. 1.5 11 km W of Caldwell, Kansas
  11. 2.3 4 km ESE of Caldwell, Kansas
  12. 2.5 6 km E of Nescatunga, Oklahoma
  13. 1.6 5 km ENE of Manchester, Oklahoma
  14. 2.6 10 km E of Nescatunga, Oklahoma
  15. 2.1 7 km ESE of Anthony, 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.