QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

11 km NE of Wakita, Oklahoma

· 4.3 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 19 kmHarper County 33 kmSumner County 44 kmAlfalfa County 50 kmKay County 63 kmGarfield County 64 kmKingman County 72 kmBarber County 81 kmNoble 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 2.8 (ml)
Depth
4.3 km below the surface
Felt
2 reports · strongest reported intensity IV
Nearest
Grant County, 19 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 36.9524, -97.8326. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 19 km (12 mi) NNW of here earthquakes near Grant County
Harper County, KS 33 km (21 mi) SE of here earthquakes near Harper County
Sumner County, KS 44 km (27 mi) SW of here earthquakes near Sumner County
Alfalfa County, OK 50 km (31 mi) ENE of here earthquakes near Alfalfa County
Kay County, OK 63 km (39 mi) WNW of here earthquakes near Kay County
Garfield County, OK 64 km (40 mi) N of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 2.2 12 km NNW of Caldwell, Kansas
  2. 1.7 12 km NNW of Caldwell, Kansas
  3. 1.7 12 km NNW of Caldwell, Kansas
  4. 2.0 12 km NNW of Caldwell, Kansas
  5. 2.5 3 km SSE of Danville, Kansas
  6. 1.9 5 km NW of Mayfield, Kansas
  7. 2.5 6 km NW of Hunter, Oklahoma
  8. 2.8 6 km NNW of Hunter, Oklahoma
  9. 1.8 11 km W of Caldwell, Kansas
  10. 2.5 5 km SW of Kremlin, Oklahoma
  11. 1.7 11 km W of Caldwell, Kansas
  12. 2.6 11 km W of Caldwell, Kansas
  13. 2.2 4 km NNE of Anthony, Kansas
  14. 1.6 1 km NNE of Manchester, Oklahoma
  15. 1.6 8 km N of Argonia, 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.