QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mwr

3 km WSW of Nash, Oklahoma

· 6.4 km deep · released about 3.8 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alfalfa County 22 kmGrant County 30 kmGarfield County 41 kmMajor County 56 kmHarper County 59 kmWoods County 70 kmKingfisher County 80 kmNoble County 82 kmBarber County 82 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 3.6 (mwr)
Depth
6.4 km below the surface
Felt
29 reports · strongest reported intensity VI
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Alfalfa County, 22 km WNW
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. 29 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.8 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 45,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,400× the energy of this one
  4. This earthquake M 3.6 about 3.8 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 7.9× 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 36.6602, -98.0867. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alfalfa County, OK 22 km (14 mi) ESE of here earthquakes near Alfalfa County
Grant County, OK 30 km (19 mi) WSW of here earthquakes near Grant County
Garfield County, OK 41 km (26 mi) NW of here earthquakes near Garfield County
Major County, OK 56 km (35 mi) NE of here earthquakes near Major County
Harper County, KS 59 km (36 mi) S of here earthquakes near Harper County
Woods County, OK 70 km (43 mi) E of here earthquakes near Woods County

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

Aftershocks so far

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

  1. 2.6 3 km WNW of Fairmont, Oklahoma
  2. 2.7 6 km NNE of Wakita, Oklahoma
  3. 2.8 6 km NNE of Wakita, Oklahoma
  4. 3.5 6 km NNE of Wakita, Oklahoma
  5. 3.7 4 km NNW of Wakita, Oklahoma
  6. 3.9 6 km N of Wakita, Oklahoma
  7. 2.7 6 km NW of Jet, Oklahoma
  8. 2.5 5 km NE of Carmen, Oklahoma
  9. 2.7 9 km W of Deer Creek, Oklahoma
  10. 3.4 6 km NNE of Medford, Oklahoma
  11. 2.7 6 km N of Wakita, Oklahoma
  12. 1.5 7 km S of Anthony, Kansas
  13. 2.8 13 km WSW of Aline, Oklahoma
  14. 2.5 4 km NE of Medford, Oklahoma
  15. 2.7 9 km W of Deer Creek, 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.