QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3mb_lg

8 km NNE of Quinlan, Oklahoma

· 14 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 26 kmWoods County 26 kmMajor County 49 kmDewey County 61 kmHarper County 65 kmAlfalfa County 66 kmEllis County 74 kmComanche County 75 kmBarber 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 2.3 (mb_lg)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Woodward County, 26 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3782 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 85 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 11× the energy of this one
  4. This earthquake M 2.3 about 85 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 36.5292, -99.0165. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 26 km (16 mi) ENE of here earthquakes near Woodward County
Woods County, OK 26 km (16 mi) SSW of here earthquakes near Woods County
Major County, OK 49 km (30 mi) WNW of here earthquakes near Major County
Dewey County, OK 61 km (38 mi) N of here earthquakes near Dewey County
Harper County, OK 65 km (40 mi) ESE of here earthquakes near Harper County
Alfalfa County, OK 66 km (41 mi) WSW of here earthquakes near Alfalfa County

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

Aftershocks so far

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

  1. 2.9 17 km SSE of Waynoka, Oklahoma
  2. 1.8 17 km SSE of Waynoka, Oklahoma
  3. 2.0 17 km SE of Waynoka, Oklahoma
  4. 2.3 17 km SE of Waynoka, Oklahoma
  5. 3.0 9 km NE of Quinlan, Oklahoma
  6. 1.5 16 km SE of Waynoka, Oklahoma
  7. 2.8 5 km NNE of Avard, Oklahoma
  8. 1.7 18 km SSE of Waynoka, Oklahoma
  9. 2.7 5 km ENE of Avard, Oklahoma
  10. 2.7 17 km SE of Waynoka, Oklahoma
  11. 1.6 12 km SSE of Waynoka, Oklahoma
  12. 1.8 13 km SSE of Waynoka, Oklahoma
  13. 2.3 16 km SE of Waynoka, Oklahoma
  14. 2.6 18 km SSE of Waynoka, Oklahoma
  15. 1.6 18 km SSE of Waynoka, 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 5.1 on 2016-02-13 — it released about 16,000 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.