QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

6 km NNW of Quinlan, Oklahoma

· 7.8 km deep · released about 6.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 20 kmWoods County 30 kmMajor County 53 kmDewey County 60 kmHarper County 61 kmEllis County 68 kmAlfalfa County 71 kmComanche County 76 kmBarber 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 1.6 (ml)
Depth
7.8 km below the surface
Felt
no reports yet
Nearest
Woodward County, 20 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2566 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 6.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.8 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 36.5127, -99.0752. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 20 km (13 mi) ENE of here earthquakes near Woodward County
Woods County, OK 30 km (19 mi) SW of here earthquakes near Woods County
Major County, OK 53 km (33 mi) WNW of here earthquakes near Major County
Dewey County, OK 60 km (37 mi) N of here earthquakes near Dewey County
Harper County, OK 61 km (38 mi) ESE of here earthquakes near Harper County
Ellis County, OK 68 km (43 mi) ENE of here earthquakes near Ellis County

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

Aftershocks so far

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

  1. 2.0 16 km SSE of Waynoka, Oklahoma
  2. 1.6 17 km ENE of Fort Supply, Oklahoma
  3. 1.7 16 km SSE of Waynoka, Oklahoma
  4. 2.2 10 km NNE of Quinlan, Oklahoma
  5. 1.5 4 km S of Alva, Oklahoma
  6. 1.9 9 km NNE of Quinlan, Oklahoma
  7. 1.5 9 km NNE of Quinlan, Oklahoma
  8. 1.7 9 km NNE of Quinlan, Oklahoma
  9. 1.7 9 km NNE of Quinlan, Oklahoma
  10. 1.8 9 km NNE of Quinlan, Oklahoma
  11. 1.6 10 km NNE of Quinlan, Oklahoma
  12. 1.8 10 km NNE of Quinlan, Oklahoma
  13. 1.7 4 km NNE of Avard, Oklahoma
  14. 2.1 16 km SE of Waynoka, Oklahoma
  15. 1.6 10 km NNE of Quinlan, 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 200,000 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.