QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mwr

6 km SE of Mankato, Kansas

· 5.0 km deep · released about 3.8 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Jewell County 7 kmMitchell County 39 kmRepublic County 44 kmNuckolls County 49 kmCloud County 52 kmSmith County 54 kmWebster County 57 kmThayer County 68 kmOsborne County 68 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 3.6 (mwr)
Depth
5.0 km below the surface
Felt
31 reports · strongest reported intensity VI
Measured shaking
intensity IV (ShakeMap)
Nearest
Jewell County, 7 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3326 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 31 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 45,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 7.9× 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 39.7400, -98.1575. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jewell County, KS 7 km (4 mi) SE of here earthquakes near Jewell County
Mitchell County, KS 39 km (24 mi) N of here earthquakes near Mitchell County
Republic County, KS 44 km (28 mi) WSW of here earthquakes near Republic County
Nuckolls County, NE 49 km (31 mi) S of here earthquakes near Nuckolls County
Cloud County, KS 52 km (33 mi) WNW of here earthquakes near Cloud County
Smith County, KS 54 km (33 mi) E of here earthquakes near Smith County

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

Aftershocks so far

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

  1. 2.5 7 km WSW of Formoso, Kansas
  2. 2.5 7 km WSW of Formoso, Kansas
  3. 3.5 10 km NNE of Guide Rock, Nebraska
  4. 2.5 7 km WSW of Formoso, Kansas
  5. 2.6 7 km WSW of Formoso, Kansas
  6. 2.5 9 km WSW of Formoso, Kansas
  7. 2.7 5 km WNW of Cawker City, Kansas
  8. 2.6 6 km WNW of Cawker City, Kansas
  9. 3.4 8 km WSW of Superior, Nebraska
  10. 3.8 8 km WSW of Superior, Nebraska
  11. 2.5 13 km N of Cawker City, Kansas
  12. 2.5 11 km WNW of Jewell, Kansas
  13. 2.8 12 km SW of Mankato, Kansas
  14. 2.5 15 km NNW of Cawker City, Kansas
  15. 2.6 9 km W of Webber, 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.