QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

8 km SSW of Byron, Oklahoma

· 3.7 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 12 kmHarper County 46 kmWoods County 48 kmGrant County 49 kmBarber County 53 kmMajor County 61 kmGarfield County 71 kmKingman County 82 kmSumner County 87 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 (ml)
Depth
3.7 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 12 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2561 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 82 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 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 36.8343, -98.3383. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 12 km (7 mi) N of here earthquakes near Alfalfa County
Harper County, KS 46 km (29 mi) SSW of here earthquakes near Harper County
Woods County, OK 48 km (30 mi) ENE of here earthquakes near Woods County
Grant County, OK 49 km (31 mi) W of here earthquakes near Grant County
Barber County, KS 53 km (33 mi) SE of here earthquakes near Barber County
Major County, OK 61 km (38 mi) NNE of here earthquakes near Major County

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

Aftershocks so far

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

  1. 1.7 12 km SSW of Burlington, Oklahoma
  2. 3.7 1 km SE of Wakita, Oklahoma
  3. 1.7 3 km E of Jet, Oklahoma
  4. 1.5 4 km S of Alva, Oklahoma
  5. 2.1 4 km SSW of Goltry, Oklahoma
  6. 2.6 7 km E of Nescatunga, Oklahoma
  7. 2.1 7 km E of Nescatunga, Oklahoma
  8. 1.7 4 km E of Wakita, Oklahoma
  9. 1.8 7 km WNW of Ringwood, Oklahoma
  10. 1.7 4 km NNE of Avard, Oklahoma
  11. 2.3 6 km ESE of Cherokee, Oklahoma
  12. 2.5 8 km S of Goltry, Oklahoma
  13. 2.2 8 km E of Nescatunga, Oklahoma
  14. 2.4 1 km WNW of Lambert, Oklahoma
  15. 1.7 3 km NW of Lambert, 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 4.4 on 2018-06-09 — it released about 1,500 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.