QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

10 km SW of Hunnewell, Kansas

· 7.7 km deep · released about 1.1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 32 kmKay County 32 kmSumner County 34 kmHarper County 60 kmNoble County 64 kmCowley County 66 kmGarfield County 67 kmAlfalfa County 79 kmSedgwick County 84 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 3.2 (ml)
Depth
7.7 km below the surface
Felt
14 reports · strongest reported intensity III
Nearest
Grant County, 32 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2508 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 14 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 150,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,900× the energy of this one
  4. This earthquake M 3.2 about 1.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.3× 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 36.9283, -97.4745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 32 km (20 mi) ENE of here earthquakes near Grant County
Kay County, OK 32 km (20 mi) WNW of here earthquakes near Kay County
Sumner County, KS 34 km (21 mi) S of here earthquakes near Sumner County
Harper County, KS 60 km (37 mi) ESE of here earthquakes near Harper County
Noble County, OK 64 km (40 mi) NNW of here earthquakes near Noble County
Cowley County, KS 66 km (41 mi) WSW of here earthquakes near Cowley County

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

Aftershocks so far

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

  1. 1.8 10 km ESE of Jefferson, Oklahoma
  2. 2.7 10 km ESE of Jefferson, Oklahoma
  3. 1.7 10 km ESE of Jefferson, Oklahoma
  4. 2.1 6 km S of Argonia, Kansas
  5. 1.7 3 km N of Medford, Oklahoma
  6. 2.8 5 km WNW of Wellington, Kansas
  7. 2.1 2 km NW of Renfrow, Oklahoma
  8. 2.3 7 km WSW of Bluff City, Kansas
  9. 2.3 9 km SSE of Anthony, Kansas
  10. 3.5 9 km W of Bluff City, Kansas
  11. 1.8 6 km NNE of Medford, Oklahoma
  12. 1.6 8 km E of Medford, Oklahoma
  13. 1.8 10 km W of Lamont, Oklahoma
  14. 1.6 10 km ESE of Jefferson, Oklahoma
  15. 1.5 9 km ESE of Jefferson, Oklahoma

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 4.4 on 2019-05-17 — it released about 55 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.