QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

7 km NE of Wakita, Oklahoma

· 4.0 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 16 kmHarper County 35 kmAlfalfa County 47 kmSumner County 48 kmGarfield County 61 kmKay County 64 kmKingman County 75 kmBarber County 81 kmNoble County 81 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
4.0 km below the surface
Felt
no reports yet
Nearest
Grant County, 16 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3719 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

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 36.9199, -97.8563. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 16 km (10 mi) NNW of here earthquakes near Grant County
Harper County, KS 35 km (22 mi) SSE of here earthquakes near Harper County
Alfalfa County, OK 47 km (29 mi) ENE of here earthquakes near Alfalfa County
Sumner County, KS 48 km (30 mi) SW of here earthquakes near Sumner County
Garfield County, OK 61 km (38 mi) N of here earthquakes near Garfield County
Kay County, OK 64 km (40 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

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

  1. 1.5 5 km ENE of Milan, Kansas
  2. 3.3 6 km NE of Hunter, Oklahoma
  3. 2.9 7 km E of Nescatunga, Oklahoma
  4. 2.9 Oklahoma
  5. 2.7 2 km NNW of Lamont, Oklahoma
  6. 2.1 2 km E of Anthony, Kansas
  7. 1.5 5 km NE of Anthony, Kansas
  8. 2.5 5 km E of Pond Creek, Oklahoma
  9. 3.0 5 km E of Pond Creek, Oklahoma
  10. 1.6 5 km NE of Anthony, Kansas
  11. 2.5 5 km NW of Kremlin, Oklahoma
  12. 3.4 5 km NE of Anthony, Kansas
  13. 2.7 5 km SSE of Manchester, Oklahoma
  14. 1.5 7 km SSE of Freeport, Kansas
  15. 1.6 11 km SE 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.