QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

5 km ESE of Jefferson, Oklahoma

· 6.4 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 11 kmGarfield County 36 kmAlfalfa County 52 kmKay County 55 kmNoble County 57 kmHarper County 61 kmSumner County 63 kmMajor County 84 kmKingfisher County 85 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
6.4 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Grant County, 11 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3575 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have 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 36.7021, -97.7395. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 11 km (7 mi) SSE of here earthquakes near Grant County
Garfield County, OK 36 km (23 mi) N of here earthquakes near Garfield County
Alfalfa County, OK 52 km (32 mi) E of here earthquakes near Alfalfa County
Kay County, OK 55 km (34 mi) WSW of here earthquakes near Kay County
Noble County, OK 57 km (36 mi) NW of here earthquakes near Noble County
Harper County, KS 61 km (38 mi) SSE of here earthquakes near Harper County

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

Aftershocks so far

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

  1. 1.7 8 km WSW of Hunnewell, Kansas
  2. 2.9 3 km ENE of Medford, Oklahoma
  3. 3.4 1 km ENE of Renfrow, Oklahoma
  4. 3.1 5 km NNE of Jefferson, Oklahoma
  5. 2.7 3 km ENE of Medford, Oklahoma
  6. 2.7 2 km NW of Deer Creek, Oklahoma
  7. 1.6 8 km E of Caldwell, Kansas
  8. 2.2 5 km WNW of Caldwell, Kansas
  9. 1.6 5 km WNW of Caldwell, Kansas
  10. 1.7 4 km WSW of Bluff City, Kansas
  11. 2.5 6 km NNE of Wakita, Oklahoma
  12. 1.5 7 km SSE of Bluff City, Kansas
  13. 3.1 2 km NNW of Fairmont, Oklahoma
  14. 1.8 4 km WSW of Bluff City, Kansas
  15. 2.8 5 km NNE 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

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