QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3ml

7 km NNW of Jefferson, Oklahoma

· 6.8 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 3 kmGarfield County 45 kmAlfalfa County 45 kmHarper County 50 kmSumner County 58 kmKay County 60 kmNoble County 68 kmMajor County 83 kmKingman County 90 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 3.3 (ml)
Depth
6.8 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Grant County, 3 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3581 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 36.7819, -97.8178. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 3 km (2 mi) WSW of here earthquakes near Grant County
Garfield County, OK 45 km (28 mi) N of here earthquakes near Garfield County
Alfalfa County, OK 45 km (28 mi) E of here earthquakes near Alfalfa County
Harper County, KS 50 km (31 mi) SSE of here earthquakes near Harper County
Sumner County, KS 58 km (36 mi) SSW of here earthquakes near Sumner County
Kay County, OK 60 km (37 mi) W of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 2.5 6 km NNE of Wakita, Oklahoma
  2. 1.5 7 km SSE of Bluff City, Kansas
  3. 3.1 2 km NNW of Fairmont, Oklahoma
  4. 1.8 4 km WSW of Bluff City, Kansas
  5. 2.8 5 km NNE of Wakita, Oklahoma
  6. 1.8 2 km E of Anthony, Kansas
  7. 2.5 8 km ESE of Wakita, Oklahoma
  8. 3.3 4 km NNE of Cherokee, Oklahoma
  9. 2.7 9 km SE of Wakita, Oklahoma
  10. 3.0 4 km NE of Meno, Oklahoma
  11. 2.6 3 km ESE of Byron, Oklahoma
  12. 2.7 8 km WNW of Deer Creek, Oklahoma
  13. 1.9 11 km WNW of Caldwell, Kansas
  14. 2.3 7 km WNW of Renfrow, Oklahoma
  15. 2.7 2 km NW of Deer Creek, 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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