QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7ml

Oklahoma

· 9.8 km deep · released about 5.4 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 20 kmHarper County 39 kmBarber County 47 kmGrant County 50 kmWoods County 52 kmMajor County 69 kmKingman County 73 kmGarfield County 76 kmSumner 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 3.7 (ml)
Depth
9.8 km below the surface
Felt
1 report · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
Nearest
Alfalfa County, 20 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 5.4 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 32,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,000× the energy of this one
  4. This earthquake M 3.7 about 5.4 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 11× 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 36.9096, -98.3299. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 20 km (12 mi) N of here earthquakes near Alfalfa County
Harper County, KS 39 km (24 mi) SW of here earthquakes near Harper County
Barber County, KS 47 km (29 mi) SE of here earthquakes near Barber County
Grant County, OK 50 km (31 mi) WNW of here earthquakes near Grant County
Woods County, OK 52 km (32 mi) ENE of here earthquakes near Woods County
Major County, OK 69 km (43 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

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

  1. 1.9 5 km WSW of Freeport, Kansas
  2. 2.5 0 km W of Wakita, Oklahoma
  3. 1.7 5 km SSW of Bluff City, Kansas
  4. 1.5 9 km W of Bluff City, Kansas
  5. 2.6 4 km SSE of Manchester, Oklahoma
  6. 1.7 6 km NNE of Bluff City, Kansas
  7. 2.5 2 km SW of Cherokee, Oklahoma
  8. 3.5 2 km NNW of Lambert, Oklahoma
  9. 3.3 1 km WSW of Aline, Oklahoma
  10. 3.0 5 km W of Carmen, Oklahoma
  11. 2.1 9 km W of Bluff City, Kansas
  12. 2.4 8 km ENE of Hazelton, Kansas
  13. 1.9 4 km NNE of Anthony, Kansas
  14. 1.6 7 km E of Manchester, Oklahoma
  15. 2.8 5 km E of Nescatunga, 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.