QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5mb_lg

4 km E of Assaria, Kansas

· 2.7 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Saline County 15 kmMcPherson County 33 kmDickinson County 40 kmOttawa County 51 kmMarion County 53 kmEllsworth County 57 kmRice County 68 kmLincoln County 70 kmHarvey County 71 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 2.5 (mb_lg)
Depth
2.7 km below the surface
Felt
no reports yet
Nearest
Saline County, 15 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 772 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 38.6845, -97.5517. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Saline County, KS 15 km (9 mi) SE of here earthquakes near Saline County
McPherson County, KS 33 km (21 mi) NNE of here earthquakes near McPherson County
Dickinson County, KS 40 km (25 mi) WSW of here earthquakes near Dickinson County
Ottawa County, KS 51 km (32 mi) S of here earthquakes near Ottawa County
Marion County, KS 53 km (33 mi) NW of here earthquakes near Marion County
Ellsworth County, KS 57 km (35 mi) E of here earthquakes near Ellsworth County

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

Aftershocks so far

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

  1. 2.9 5 km SSW of Assaria, Kansas
  2. 2.5 5 km SW of Hope, Kansas
  3. 3.5 6 km E of Assaria, Kansas
  4. 2.6 6 km NW of Ramona, Kansas
  5. 3.7 10 km SW of Gypsum, Kansas
  6. 2.7 7 km SE of Enterprise, Kansas
  7. 2.6 9 km SW of Gypsum, Kansas
  8. 2.9 7 km WSW of Gypsum, Kansas
  9. 3.3 5 km E of Assaria, Kansas
  10. 3.3 7 km ENE of Assaria, Kansas
  11. 2.7 3 km E of Assaria, Kansas
  12. 3.4 6 km ENE of Assaria, Kansas
  13. 2.4 5 km NE of Hope, Kansas
  14. 2.6 7 km SW of Gypsum, Kansas
  15. 2.7 2 km SW of Assaria, 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 4.3 on 2021-12-08 — it released about 500 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.