QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

4 km WSW of Kremlin, Oklahoma

· 6.2 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 19 kmGrant County 30 kmAlfalfa County 46 kmNoble County 60 kmMajor County 64 kmKingfisher County 65 kmKay County 73 kmHarper County 75 kmLogan County 78 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 2.9 (ml)
Depth
6.2 km below the surface
Felt
no reports yet
Nearest
Garfield County, 19 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3799 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 36.5285, -97.8778. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 19 km (12 mi) NNW of here earthquakes near Garfield County
Grant County, OK 30 km (19 mi) SSW of here earthquakes near Grant County
Alfalfa County, OK 46 km (28 mi) ESE of here earthquakes near Alfalfa County
Noble County, OK 60 km (37 mi) WNW of here earthquakes near Noble County
Major County, OK 64 km (40 mi) ENE of here earthquakes near Major County
Kingfisher County, OK 65 km (40 mi) N of here earthquakes near Kingfisher County

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

Aftershocks so far

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

  1. 2.5 11 km NE of Wakita, Oklahoma
  2. 2.8 11 km NE of Wakita, Oklahoma
  3. 2.5 10 km NE of Wakita, Oklahoma
  4. 2.9 9 km W of Lamont, Oklahoma
  5. 2.6 7 km S of Byron, Oklahoma
  6. 2.5 7 km S of Byron, Oklahoma
  7. 3.1 8 km S of Byron, Oklahoma
  8. 2.6 8 km S of Byron, Oklahoma
  9. 3.6 8 km S of Byron, Oklahoma
  10. 3.3 6 km WNW of Wakita, Oklahoma
  11. 2.9 11 km N of Nescatunga, Oklahoma
  12. 3.2 7 km S of Byron, Oklahoma
  13. 2.7 3 km WNW of Lucien, Oklahoma
  14. 2.6 0 km W of Lucien, Oklahoma
  15. 2.5 3 km WNW of Lucien, 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.