QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

3 km E of Milan, Kansas

· 5.4 km deep · released about 9.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 13 kmHarper County 39 kmSedgwick County 49 kmGrant County 55 kmKingman County 55 kmKay County 66 kmCowley County 71 kmAlfalfa County 85 kmReno County 85 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 1.7 (ml)
Depth
5.4 km below the surface
Felt
no reports yet
Nearest
Sumner County, 13 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2903 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 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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 37.2653, -97.6353. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 13 km (8 mi) WNW of here earthquakes near Sumner County
Harper County, KS 39 km (24 mi) ENE of here earthquakes near Harper County
Sedgwick County, KS 49 km (30 mi) SSW of here earthquakes near Sedgwick County
Grant County, OK 55 km (34 mi) NNE of here earthquakes near Grant County
Kingman County, KS 55 km (34 mi) SE of here earthquakes near Kingman County
Kay County, OK 66 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

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

  1. 1.6 7 km N of Argonia, Kansas
  2. 3.3 3 km ENE of South Haven, Kansas
  3. 2.5 Kansas
  4. 1.5 3 km E of Freeport, Kansas
  5. 2.0 6 km N of Medford, Oklahoma
  6. 2.4 2 km NE of Medford, Oklahoma
  7. 1.6 6 km SSE of Anthony, Kansas
  8. 2.3 7 km NE of South Haven, Kansas
  9. 2.3 5 km ENE of South Haven, Kansas
  10. 2.5 3 km ENE of South Haven, Kansas
  11. 3.1 8 km W of Bluff City, Kansas
  12. 1.7 5 km NW of Caldwell, Kansas
  13. 2.4 4 km NE of South Haven, Kansas
  14. 2.4 5 km NE of South Haven, Kansas
  15. 4.0 4 km ENE of South Haven, 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 4.0 on 2016-11-25 — it released about 3,200 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.