QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

10 km SE of Freeport, Kansas

· 4.8 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sumner County 26 kmHarper County 27 kmGrant County 39 kmKingman County 57 kmKay County 66 kmSedgwick County 66 kmAlfalfa County 67 kmBarber County 82 kmCowley County 83 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 1.7 (ml)
Depth
4.8 km below the surface
Felt
no reports yet
Nearest
Sumner County, 26 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2857 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 37.1368, -97.7633. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sumner County, KS 26 km (16 mi) WSW of here earthquakes near Sumner County
Harper County, KS 27 km (17 mi) ESE of here earthquakes near Harper County
Grant County, OK 39 km (24 mi) N of here earthquakes near Grant County
Kingman County, KS 57 km (36 mi) SE of here earthquakes near Kingman County
Kay County, OK 66 km (41 mi) WNW of here earthquakes near Kay County
Sedgwick County, KS 66 km (41 mi) SSW of here earthquakes near Sedgwick County

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

Aftershocks so far

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

  1. 1.6 4 km ENE of Freeport, Kansas
  2. 2.2 7 km N of Nardin, Oklahoma
  3. 3.2 0 km SE of Wakita, Oklahoma
  4. 2.2 0 km ENE of Wakita, Oklahoma
  5. 3.8 0 km SW of Wakita, Oklahoma
  6. 1.9 5 km NNW of Mayfield, Kansas
  7. 2.4 4 km NNE of Medford, Oklahoma
  8. 1.8 4 km NW of Danville, Kansas
  9. 2.8 2 km WNW of Danville, Kansas
  10. 1.6 6 km SE of Freeport, Kansas
  11. 2.1 1 km WNW of Argonia, Kansas
  12. 2.2 6 km NE of South Haven, Kansas
  13. 1.5 7 km ENE of Bluff City, Kansas
  14. 1.8 6 km WNW of Renfrow, Oklahoma
  15. 1.5 5 km W of South Haven, 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 4.4 on 2018-06-09 — it released about 9,800 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.