QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mwr

5 km S of Formoso, 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 20 kmRepublic County 32 kmCloud County 41 kmMitchell County 42 kmNuckolls County 50 kmThayer County 60 kmWebster County 66 kmSmith County 68 kmOttawa County 72 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
28 reports · strongest reported intensity IV
Measured shaking
intensity V (ShakeMap)
Nearest
Jewell County, 20 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1905 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 28 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 39.7309, -97.9981. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Jewell County, KS 20 km (12 mi) ESE of here earthquakes near Jewell County
Republic County, KS 32 km (20 mi) WSW of here earthquakes near Republic County
Cloud County, KS 41 km (25 mi) NW of here earthquakes near Cloud County
Mitchell County, KS 42 km (26 mi) NNE of here earthquakes near Mitchell County
Nuckolls County, NE 50 km (31 mi) S of here earthquakes near Nuckolls County
Thayer County, NE 60 km (37 mi) SW of here earthquakes near Thayer County

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

Aftershocks so far

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

  1. 2.5 4 km NNE of Jewell, Kansas
  2. 2.6 5 km WSW of Formoso, Kansas
  3. 2.7 4 km SE of Glen Elder, Kansas
  4. 2.5 1 km NNW of Glen Elder, Kansas
  5. 2.5 1 km NNE of Glen Elder, Kansas
  6. 2.1 0 km N of Glen Elder, Kansas
  7. 2.8 2 km NNE of Glen Elder, Kansas
  8. 2.9 2 km NE of Glen Elder, Kansas
  9. 2.8 0 km NW of Glen Elder, Kansas
  10. 2.7 1 km N of Glen Elder, Kansas
  11. 2.7 0 km WSW of Glen Elder, Kansas
  12. 3.2 0 km SE of Glen Elder, Kansas
  13. 2.6 7 km N of Jewell, Kansas
  14. 2.5 7 km WSW of Formoso, Kansas
  15. 2.5 7 km WSW of Formoso, 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.