QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

11 km N of Quinlan, Oklahoma

· 5.0 km deep · released about 85 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woods County 25 kmWoodward County 25 kmMajor County 52 kmHarper County 62 kmDewey County 64 kmAlfalfa County 67 kmComanche County 72 kmEllis County 73 kmBarber 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 2.3 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Woods County, 25 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3796 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 36.5539, -99.0411. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woods County, OK 25 km (15 mi) SW of here earthquakes near Woods County
Woodward County, OK 25 km (16 mi) NE of here earthquakes near Woodward County
Major County, OK 52 km (32 mi) WNW of here earthquakes near Major County
Harper County, OK 62 km (38 mi) ESE of here earthquakes near Harper County
Dewey County, OK 64 km (40 mi) N of here earthquakes near Dewey County
Alfalfa County, OK 67 km (42 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. 1.6 17 km SE of Waynoka, Oklahoma
  2. 1.6 17 km SE of Waynoka, Oklahoma
  3. 1.9 17 km SE of Waynoka, Oklahoma
  4. 3.6 17 km SE of Waynoka, Oklahoma
  5. 1.6 16 km ESE of Waynoka, Oklahoma
  6. 1.7 17 km SE of Waynoka, Oklahoma
  7. 1.6 18 km SSE of Waynoka, Oklahoma
  8. 1.6 17 km SSE of Waynoka, Oklahoma
  9. 1.5 17 km SSE of Waynoka, Oklahoma
  10. 1.9 17 km SSE of Waynoka, Oklahoma
  11. 1.9 22 km W of Cleo Springs, Oklahoma
  12. 1.6 18 km ESE of Waynoka, Oklahoma
  13. 1.7 17 km SSE of Waynoka, Oklahoma
  14. 1.6 18 km SSE of Waynoka, Oklahoma
  15. 1.5 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.