QuakeIndex

Earthquake · reviewed by a seismologist

M 3.9mwr

6 km NNE of Wakita, Oklahoma

· 5.3 km deep · released about 11 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 20 kmHarper County 31 kmAlfalfa County 44 kmSumner County 49 kmGarfield County 63 kmKay County 69 kmKingman County 72 kmBarber County 76 kmNoble County 86 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 3.9 (mwr)
Depth
5.3 km below the surface
Felt
129 reports · strongest reported intensity V
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Grant County, 20 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2383 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 129 people have reported feeling it to USGS.

How big was it?

This earthquake released about 11 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 16,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 710× the energy of this one
  3. Magna, Utah 2020 M 5.7 500× the energy of this one
  4. This earthquake M 3.9 about 11 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 22× 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 36.9375, -97.9060. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 20 km (12 mi) NNW of here earthquakes near Grant County
Harper County, KS 31 km (19 mi) SSE of here earthquakes near Harper County
Alfalfa County, OK 44 km (27 mi) ENE of here earthquakes near Alfalfa County
Sumner County, KS 49 km (31 mi) SW of here earthquakes near Sumner County
Garfield County, OK 63 km (39 mi) N of here earthquakes near Garfield County
Kay County, OK 69 km (43 mi) WNW of here earthquakes near Kay County

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

Aftershocks so far

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

  1. 1.7 9 km W of Bluff City, Kansas
  2. 1.7 9 km ESE of Bluff City, Kansas
  3. 1.5 9 km ESE of Bluff City, KS
  4. 1.6 5 km SSE of Freeport, Kansas
  5. 1.6 9 km W of Bluff City, Kansas
  6. 2.7 5 km SSE of Freeport, Kansas
  7. 3.5 5 km SSE of Freeport, Kansas
  8. 3.3 2 km WNW of Deer Creek, Oklahoma
  9. 2.2 0 km N of Manchester, Oklahoma
  10. 2.7 3 km ENE of Medford, Oklahoma
  11. 1.7 8 km WSW of Hunnewell, Kansas
  12. 2.9 3 km ENE of Medford, Oklahoma
  13. 3.4 1 km ENE of Renfrow, Oklahoma
  14. 3.1 5 km NNE of Jefferson, Oklahoma
  15. 2.7 3 km ENE of Medford, 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.