QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

5 km ENE of Milan, Kansas

· 5.3 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 12 kmHarper County 41 kmSedgwick County 47 kmKingman County 56 kmGrant County 57 kmKay County 67 kmCowley County 69 kmReno County 85 kmHarvey 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
5.3 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Sumner County, 12 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3231 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has 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 37.2813, -97.6163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 12 km (7 mi) WNW of here earthquakes near Sumner County
Harper County, KS 41 km (26 mi) ENE of here earthquakes near Harper County
Sedgwick County, KS 47 km (29 mi) SSW of here earthquakes near Sedgwick County
Kingman County, KS 56 km (35 mi) ESE of here earthquakes near Kingman County
Grant County, OK 57 km (35 mi) NNE of here earthquakes near Grant County
Kay County, OK 67 km (41 mi) NW of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 2.0 7 km SW of Mayfield, Kansas
  2. 1.6 2 km WNW of Freeport, Kansas
  3. 2.8 11 km S of Spivey, Kansas
  4. 2.1 2 km W of Freeport, Kansas
  5. 1.8 8 km SE of Conway Springs, Kansas
  6. 1.5 5 km E of Harper, Kansas
  7. 3.4 5 km E of Harper, Kansas
  8. 1.7 5 km E of Harper, Kansas
  9. 2.1 6 km NE of Mayfield, Kansas
  10. 1.6 3 km NNW of Freeport, Kansas
  11. 2.5 7 km NNW of Argonia, Kansas
  12. 1.5 3 km NNW of Freeport, Kansas
  13. 1.6 7 km SE of Conway Springs, Kansas
  14. 1.7 Kansas
  15. 2.4 6 km NNW of Argonia, 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.