QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

3 km W of Braman, Oklahoma

· 7.1 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kay County 24 kmSumner County 36 kmGrant County 40 kmCowley County 59 kmNoble County 61 kmHarper County 68 kmGarfield County 71 kmSedgwick County 84 kmAlfalfa County 87 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 2.6 (ml)
Depth
7.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Kay County, 24 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3575 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 36.9253, -97.3714. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kay County, OK 24 km (15 mi) WNW of here earthquakes near Kay County
Sumner County, KS 36 km (23 mi) SSE of here earthquakes near Sumner County
Grant County, OK 40 km (25 mi) ENE of here earthquakes near Grant County
Cowley County, KS 59 km (36 mi) SW of here earthquakes near Cowley County
Noble County, OK 61 km (38 mi) NNW of here earthquakes near Noble County
Harper County, KS 68 km (42 mi) ESE of here earthquakes near Harper County

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

Aftershocks so far

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

  1. 1.7 Kansas
  2. 2.1 5 km SSE of Freeport, Kansas
  3. 1.9 5 km SSE of Freeport, Kansas
  4. 2.5 5 km SSE of Freeport, Kansas
  5. 1.7 9 km ESE of Bluff City, Kansas
  6. 1.5 9 km ESE of Bluff City, KS
  7. 1.6 5 km SSE of Freeport, Kansas
  8. 2.7 5 km SSE of Freeport, Kansas
  9. 3.5 5 km SSE of Freeport, Kansas
  10. 3.3 2 km WNW of Deer Creek, Oklahoma
  11. 2.7 3 km ENE of Medford, Oklahoma
  12. 1.7 8 km WSW of Hunnewell, Kansas
  13. 2.9 3 km ENE of Medford, Oklahoma
  14. 3.4 1 km ENE of Renfrow, Oklahoma
  15. 1.7 6 km NW of Red Rock, 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.