QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2mb_lg

6 km WNW of Hardtner, Kansas

· 5.0 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Barber County 21 kmWoods County 36 kmAlfalfa County 49 kmComanche County 50 kmHarper County 61 kmPratt County 68 kmKingman County 77 kmKiowa County 77 kmMajor County 82 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 2.2 (mb_lg)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Barber County, 21 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2122 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 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 37.0321, -98.7209. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barber County, KS 21 km (13 mi) S of here earthquakes near Barber County
Woods County, OK 36 km (23 mi) NNE of here earthquakes near Woods County
Alfalfa County, OK 49 km (30 mi) NW of here earthquakes near Alfalfa County
Comanche County, KS 50 km (31 mi) ESE of here earthquakes near Comanche County
Harper County, KS 61 km (38 mi) WSW of here earthquakes near Harper County
Pratt County, KS 68 km (43 mi) S of here earthquakes near Pratt County

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

Aftershocks so far

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

  1. 1.8 11 km N of Dacoma, Oklahoma
  2. 1.6 7 km NW of Waynoka, Oklahoma
  3. 2.0 3 km NNE of Lambert, Oklahoma
  4. 2.6 6 km ESE of Dacoma, Oklahoma
  5. 1.6 0 km ESE of Avard, Oklahoma
  6. 2.3 12 km NW of Hazelton, Kansas
  7. 2.0 14 km WSW of Hardtner, Kansas
  8. 1.6 8 km NW of Waynoka, Oklahoma
  9. 1.6 5 km NNW of Carmen, Oklahoma
  10. 1.8 4 km S of Avard, Oklahoma
  11. 2.5 2 km SSW of Cherokee, Oklahoma
  12. 1.8 4 km NE of Cherokee, Oklahoma
  13. 1.5 4 km NE of Cherokee, Oklahoma
  14. 2.3 2 km SSW of Cherokee, Oklahoma
  15. 2.0 10 km NW of Waynoka, Oklahoma

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.