QuakeIndex

Earthquake · reviewed by a seismologist

M 3.8ml

9 km SSE of Byron, Oklahoma

· 6.8 km deep · released about 7.6 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 11 kmGrant County 43 kmHarper County 45 kmWoods County 54 kmBarber County 58 kmMajor County 61 kmGarfield County 65 kmKingman County 83 kmSumner County 83 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 3.8 (ml)
Depth
6.8 km below the surface
Felt
29 reports · strongest reported intensity V
Measured shaking
intensity IV (ShakeMap)
Nearest
Alfalfa County, 11 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2382 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 29 people have reported feeling it to USGS.

How big was it?

This earthquake released about 7.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.8 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 22,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 710× the energy of this one
  4. This earthquake M 3.8 about 7.6 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 16× more

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 36.8174, -98.2727. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 11 km (7 mi) NNE of here earthquakes near Alfalfa County
Grant County, OK 43 km (27 mi) W of here earthquakes near Grant County
Harper County, KS 45 km (28 mi) SSW of here earthquakes near Harper County
Woods County, OK 54 km (33 mi) E of here earthquakes near Woods County
Barber County, KS 58 km (36 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

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

  1. 1.5 9 km ESE of Bluff City, KS
  2. 2.5 6 km NE of Avard, Oklahoma
  3. 1.6 9 km W of Bluff City, Kansas
  4. 2.2 0 km N of Manchester, Oklahoma
  5. 3.8 9 km SSW of Helena, Oklahoma
  6. 3.1 5 km NNE of Jefferson, Oklahoma
  7. 2.6 5 km NE of Avard, Oklahoma
  8. 3.1 8 km WSW of Helena, Oklahoma
  9. 1.7 4 km WSW of Bluff City, Kansas
  10. 2.5 6 km NNE of Wakita, Oklahoma
  11. 1.5 7 km SSE of Bluff City, Kansas
  12. 1.8 4 km WSW of Bluff City, Kansas
  13. 2.8 5 km NNE of Wakita, Oklahoma
  14. 1.8 2 km E of Anthony, Kansas
  15. 2.5 8 km ESE of Wakita, 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.