QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

12 km NW of Hazelton, Kansas

· 5.0 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Barber County 17 kmHarper County 40 kmAlfalfa County 50 kmKingman County 55 kmWoods County 57 kmPratt County 58 kmComanche County 65 kmGrant County 76 kmKiowa 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 2.3 (mb_lg)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Barber County, 17 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1363 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 37.1534, -98.5161. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barber County, KS 17 km (10 mi) ESE of here earthquakes near Barber County
Harper County, KS 40 km (25 mi) W of here earthquakes near Harper County
Alfalfa County, OK 50 km (31 mi) NNW of here earthquakes near Alfalfa County
Kingman County, KS 55 km (34 mi) SW of here earthquakes near Kingman County
Woods County, OK 57 km (35 mi) NNE of here earthquakes near Woods County
Pratt County, KS 58 km (36 mi) SSE of here earthquakes near Pratt County

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

Aftershocks so far

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

  1. 1.8 9 km SSE of Byron, Oklahoma
  2. 1.8 4 km NE of Cherokee, Oklahoma
  3. 2.5 6 km SSE of Spivey, Kansas
  4. 2.4 9 km S of Spivey, Kansas
  5. 1.7 5 km N of Cherokee, Oklahoma
  6. 1.6 12 km SSE of Waldron, Kansas
  7. 1.9 7 km S of Byron, Oklahoma
  8. 2.4 3 km WSW of Harper, Kansas
  9. 1.8 2 km SSE of Cherokee, Oklahoma
  10. 1.6 3 km ESE of Manchester, Oklahoma
  11. 1.8 9 km SSE of Byron, Oklahoma
  12. 2.3 6 km NNE of Avard, Oklahoma
  13. 2.2 10 km N of Dacoma, Oklahoma
  14. 1.8 11 km N of Dacoma, Oklahoma
  15. 2.5 6 km SW of Manchester, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2021-02-19 — it released about 710 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.