QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9mb_lg

6 km NNE of Cherokee, Oklahoma

· 3.9 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 8 kmGrant County 47 kmHarper County 48 kmWoods County 49 kmBarber County 57 kmMajor County 58 kmGarfield County 67 kmKingman County 85 kmSumner County 88 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 (mb_lg)
Depth
3.9 km below the surface
Felt
no reports yet
Measured shaking
intensity IV (ShakeMap)
Nearest
Alfalfa County, 8 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2705 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 36.8022, -98.3193. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 8 km (5 mi) N of here earthquakes near Alfalfa County
Grant County, OK 47 km (29 mi) W of here earthquakes near Grant County
Harper County, KS 48 km (30 mi) SSW of here earthquakes near Harper County
Woods County, OK 49 km (31 mi) E of here earthquakes near Woods County
Barber County, KS 57 km (35 mi) SE of here earthquakes near Barber County
Major County, OK 58 km (36 mi) NNE of here earthquakes near Major County

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

Aftershocks so far

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

  1. 1.6 7 km E of Nescatunga, Oklahoma
  2. 2.6 7 km NNW of Medford, Oklahoma
  3. 2.5 7 km NNW of Medford, Oklahoma
  4. 1.8 9 km W of Bluff City, Kansas
  5. 1.8 6 km SW of Goltry, Oklahoma
  6. 2.2 6 km NE of Cherokee, Oklahoma
  7. 1.9 1 km N of Lambert, Oklahoma
  8. 1.9 7 km S of Goltry, Oklahoma
  9. 1.8 9 km W of Bluff City, Kansas
  10. 1.9 10 km S of Dacoma, Oklahoma
  11. 1.5 6 km NNE of Avard, Oklahoma
  12. 1.6 4 km SSW of Cherokee, Oklahoma
  13. 2.5 9 km W of Bluff City, Kansas
  14. 1.6 2 km SSE of Bluff City, Kansas
  15. 1.8 2 km WSW of Anthony, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2016-02-13 — it released about 2,000 times the energy of this one.

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

On USGS

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