QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

2 km ENE of Douglas, Oklahoma

· 6.9 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 18 kmNoble County 38 kmLogan County 43 kmKingfisher County 45 kmGrant County 59 kmPayne County 64 kmKay County 75 kmAlfalfa County 79 kmMajor County 81 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 2.5 (ml)
Depth
6.9 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Garfield County, 18 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2444 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 36.2735, -97.6407. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 18 km (11 mi) SE of here earthquakes near Garfield County
Noble County, OK 38 km (24 mi) WSW of here earthquakes near Noble County
Logan County, OK 43 km (27 mi) NNW of here earthquakes near Logan County
Kingfisher County, OK 45 km (28 mi) NE of here earthquakes near Kingfisher County
Grant County, OK 59 km (36 mi) SSE of here earthquakes near Grant County
Payne County, OK 64 km (39 mi) WNW of here earthquakes near Payne County

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

Aftershocks so far

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

  1. 1.8 0 km NNW of Fairmont, Oklahoma
  2. 2.0 1 km NNW of Fairmont, Oklahoma
  3. 1.9 8 km ESE of Jefferson, Oklahoma
  4. 2.1 9 km ESE of Jefferson, Oklahoma
  5. 1.9 5 km N of Ames, Oklahoma
  6. 3.6 4 km N of Ames, Oklahoma
  7. 2.5 Oklahoma
  8. 3.6 1 km N of Fairmont, Oklahoma
  9. 2.3 1 km N of Fairmont, Oklahoma
  10. 2.0 1 km N of Fairmont, Oklahoma
  11. 2.2 3 km NE of Fairmont, Oklahoma
  12. 1.6 6 km ENE of Hennessey, Oklahoma
  13. 2.5 3 km ENE of Douglas, Oklahoma
  14. 1.6 2 km ENE of Douglas, Oklahoma
  15. 1.6 5 km NW of Mulhall, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2018-04-09 — it released about 1,400 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.