QuakeIndex

Earthquake · reviewed by a seismologist

M 4.0mwr

4 km ENE of South Haven, Kansas

· 5.0 km deep · released about 15 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 23 kmKay County 34 kmGrant County 49 kmCowley County 50 kmHarper County 65 kmSedgwick County 69 kmNoble County 76 kmGarfield County 86 kmKingman County 88 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 4.0 (mwr)
Depth
5.0 km below the surface
Felt
474 reports · strongest reported intensity VI
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Sumner County, 23 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2382 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 474 people have reported feeling it to USGS.

How big was it?

This earthquake released about 15 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 11,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 500× the energy of this one
  3. Magna, Utah 2020 M 5.7 350× the energy of this one
  4. This earthquake M 4.0 about 15 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 32× more

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 37.0649, -97.3543. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 23 km (14 mi) SSE of here earthquakes near Sumner County
Kay County, OK 34 km (21 mi) NW of here earthquakes near Kay County
Grant County, OK 49 km (31 mi) NE of here earthquakes near Grant County
Cowley County, KS 50 km (31 mi) WSW of here earthquakes near Cowley County
Harper County, KS 65 km (40 mi) ESE of here earthquakes near Harper County
Sedgwick County, KS 69 km (43 mi) S 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 10 km SSE of Milan, Kansas
  2. 2.6 2 km ENE of Medford, Oklahoma
  3. 1.9 2 km SE of Milan, Kansas
  4. 1.8 7 km N of Nardin, Oklahoma
  5. 1.9 7 km N of Nardin, Oklahoma
  6. 1.6 6 km NNW of Nardin, Oklahoma
  7. 1.9 8 km N of Nardin, Oklahoma
  8. 2.6 7 km NNW of Medford, Oklahoma
  9. 2.0 8 km N of Nardin, Oklahoma
  10. 2.5 7 km NNW of Medford, Oklahoma
  11. 1.7 7 km ENE of Bluff City, Kansas
  12. 2.4 2 km ENE of Medford, Oklahoma
  13. 2.1 5 km NNE of Medford, Oklahoma
  14. 1.6 2 km SSE of Bluff City, Kansas
  15. 2.2 5 km W 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 4.1 on 2017-03-29 — it released about 1.4 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.