QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

6 km WSW of Woodbine, Kansas

· 5.0 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dickinson County 15 kmGeary County 34 kmMorris County 34 kmMarion County 46 kmSaline County 54 kmRiley County 63 kmClay County 65 kmChase County 65 kmOttawa County 67 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 2.3 (mb_lg)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Dickinson County, 15 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1603 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 38.7736, -97.0311. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dickinson County, KS 15 km (9 mi) SE of here earthquakes near Dickinson County
Geary County, KS 34 km (21 mi) SW of here earthquakes near Geary County
Morris County, KS 34 km (21 mi) WNW of here earthquakes near Morris County
Marion County, KS 46 km (29 mi) N of here earthquakes near Marion County
Saline County, KS 54 km (33 mi) E of here earthquakes near Saline County
Riley County, KS 63 km (39 mi) SSW of here earthquakes near Riley County

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

Aftershocks so far

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

  1. 2.5 5 km SW of Hope, Kansas
  2. 3.5 6 km E of Assaria, Kansas
  3. 2.6 6 km NW of Ramona, Kansas
  4. 3.7 10 km SW of Gypsum, Kansas
  5. 2.7 7 km SE of Enterprise, Kansas
  6. 2.6 9 km SW of Gypsum, Kansas
  7. 2.9 7 km WSW of Gypsum, Kansas
  8. 3.3 5 km E of Assaria, Kansas
  9. 3.3 7 km ENE of Assaria, Kansas
  10. 2.7 3 km E of Assaria, Kansas
  11. 3.4 6 km ENE of Assaria, Kansas
  12. 2.4 5 km NE of Hope, Kansas
  13. 2.6 7 km SW of Gypsum, Kansas
  14. 3.5 5 km NNW of Herington, Kansas
  15. 2.4 3 km ENE 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 1,000 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.