QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

4 km NW of Harper, Kansas

· 3.1 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Harper County 14 kmKingman County 27 kmSumner County 51 kmBarber County 56 kmGrant County 64 kmSedgwick County 67 kmAlfalfa County 69 kmPratt County 70 kmReno County 70 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 1.5 (ml)
Depth
3.1 km below the surface
Felt
no reports yet
Nearest
Harper County, 14 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3098 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 37.3162, -98.0663. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Harper County, KS 14 km (9 mi) N of here earthquakes near Harper County
Kingman County, KS 27 km (17 mi) SSE of here earthquakes near Kingman County
Sumner County, KS 51 km (32 mi) W of here earthquakes near Sumner County
Barber County, KS 56 km (35 mi) E of here earthquakes near Barber County
Grant County, OK 64 km (40 mi) NNW of here earthquakes near Grant County
Sedgwick County, KS 67 km (42 mi) SW of here earthquakes near Sedgwick 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. 1.8 9 km S of Milton, Kansas
  2. 1.7 8 km N of Manchester, Oklahoma
  3. 2.1 9 km W of Bluff City, Kansas
  4. 1.6 6 km E of Manchester, Oklahoma
  5. 2.3 5 km E of Manchester, Oklahoma
  6. 1.6 3 km WSW of Freeport, Kansas
  7. 2.1 3 km WSW of Freeport, Kansas
  8. 1.8 7 km SE of Bluff City, Kansas
  9. 2.0 4 km E of Bluff City, Kansas
  10. 1.9 4 km E of Bluff City, Kansas
  11. 1.8 4 km E of Bluff City, Kansas
  12. 2.1 4 km E of Bluff City, Kansas
  13. 2.1 5 km N of Harper, Kansas
  14. 1.8 3 km N of Freeport, Kansas
  15. 1.9 7 km SE of Bluff City, 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.