QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

2 km E of Byron, Oklahoma

· 5.0 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 20 kmHarper County 37 kmGrant County 44 kmBarber County 52 kmWoods County 57 kmMajor County 70 kmGarfield County 72 kmKingman County 73 kmSumner County 78 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 3.0 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Alfalfa County, 20 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3762 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 36.9006, -98.2661. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 20 km (12 mi) NNE of here earthquakes near Alfalfa County
Harper County, KS 37 km (23 mi) SSW of here earthquakes near Harper County
Grant County, OK 44 km (28 mi) WNW of here earthquakes near Grant County
Barber County, KS 52 km (32 mi) SE of here earthquakes near Barber County
Woods County, OK 57 km (35 mi) ENE of here earthquakes near Woods County
Major County, OK 70 km (43 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

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

  1. 2.8 9 km NW of Dacoma, Oklahoma
  2. 1.7 11 km W of Caldwell, Kansas
  3. 2.6 11 km W of Caldwell, Kansas
  4. 2.2 4 km NNE of Anthony, Kansas
  5. 2.6 5 km SSW of Jet, Oklahoma
  6. 1.6 1 km NNE of Manchester, Oklahoma
  7. 1.6 11 km W of Caldwell, Kansas
  8. 3.3 2 km S of Nescatunga, Oklahoma
  9. 2.0 4 km NNE of Anthony, Kansas
  10. 2.9 6 km NW of Jet, Oklahoma
  11. 2.8 5 km W of Medford, Oklahoma
  12. 1.5 5 km SSE of Freeport, Kansas
  13. 1.6 3 km NW of Freeport, Kansas
  14. 2.5 9 km SSE of Wakita, Oklahoma
  15. 1.9 5 km SSW 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.