QuakeIndex

Earthquake · reviewed by a seismologist

M 4.1mwr

8 km W of Deer Creek, Oklahoma

· 2.8 km deep · released about 21 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 16 kmKay County 42 kmSumner County 48 kmGarfield County 51 kmHarper County 58 kmNoble County 58 kmAlfalfa County 64 kmCowley County 83 kmKingman County 95 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 4.1 (mwr)
Depth
2.8 km below the surface
Felt
257 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Grant County, 16 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2382 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 257 people have reported feeling it to USGS.

How big was it?

This earthquake released about 21 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 7,900× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 350× the energy of this one
  3. Magna, Utah 2020 M 5.7 250× the energy of this one
  4. This earthquake M 4.1 about 21 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 45× 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 36.8150, -97.6114. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 16 km (10 mi) E of here earthquakes near Grant County
Kay County, OK 42 km (26 mi) W of here earthquakes near Kay County
Sumner County, KS 48 km (30 mi) SSW of here earthquakes near Sumner County
Garfield County, OK 51 km (32 mi) NNE of here earthquakes near Garfield County
Harper County, KS 58 km (36 mi) SE of here earthquakes near Harper County
Noble County, OK 58 km (36 mi) NW of here earthquakes near Noble 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. 2.2 2 km SE of Bluff City, Kansas
  2. 2.6 10 km W of Lamont, Oklahoma
  3. 2.3 4 km SE of Freeport, Kansas
  4. 2.7 9 km W of Lamont, Oklahoma
  5. 3.3 10 km W of Lamont, Oklahoma
  6. 2.0 6 km SSE of Bluff City, Kansas
  7. 2.2 9 km W of Bluff City, Kansas
  8. 1.7 6 km SSE of Bluff City, Kansas
  9. 3.0 10 km W of Lamont, Oklahoma
  10. 3.0 4 km WNW of Medford, Oklahoma
  11. 2.0 10 km WNW of Caldwell, Kansas
  12. 1.9 10 km N of Caldwell, Kansas
  13. 2.6 5 km WNW of Medford, Oklahoma
  14. 3.6 9 km W of Lamont, Oklahoma
  15. 3.0 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.0 on 2016-11-25.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.