QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

1 km SE of Mayfield, Kansas

· 4.2 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 3 kmHarper County 48 kmSedgwick County 48 kmGrant County 56 kmKay County 59 kmCowley County 61 kmKingman County 64 kmButler County 84 kmHarvey County 89 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 1.6 (ml)
Depth
4.2 km below the surface
Felt
no reports yet
Nearest
Sumner County, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3555 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 37.2490, -97.5277. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 3 km (2 mi) WNW of here earthquakes near Sumner County
Harper County, KS 48 km (30 mi) E of here earthquakes near Harper County
Sedgwick County, KS 48 km (30 mi) S of here earthquakes near Sedgwick County
Grant County, OK 56 km (35 mi) NNE of here earthquakes near Grant County
Kay County, OK 59 km (37 mi) NW of here earthquakes near Kay County
Cowley County, KS 61 km (38 mi) W of here earthquakes near Cowley County

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

Aftershocks so far

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

  1. 3.1 7 km N of Nardin, Oklahoma
  2. 2.8 7 km N of Nardin, Oklahoma
  3. 1.7 4 km SE of Freeport, Kansas
  4. 1.9 9 km WNW of South Haven, Kansas
  5. 3.2 0 km ENE of Renfrow, Oklahoma
  6. 1.8 9 km S of Milton, Kansas
  7. 2.1 9 km W of Bluff City, Kansas
  8. 1.6 6 km E of Manchester, Oklahoma
  9. 2.3 5 km E of Manchester, Oklahoma
  10. 1.6 3 km WSW of Freeport, Kansas
  11. 2.1 3 km WSW of Freeport, Kansas
  12. 1.8 7 km SE of Bluff City, Kansas
  13. 2.0 4 km E of Bluff City, Kansas
  14. 1.9 4 km E of Bluff City, Kansas
  15. 1.8 4 km E of Bluff City, 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 4,700 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.