QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

6 km N of Quinlan, Oklahoma

· 5.0 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 22 kmWoods County 29 kmMajor County 51 kmDewey County 60 kmHarper County 63 kmAlfalfa County 70 kmEllis County 70 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 2.7 (ml)
Depth
5.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Woodward County, 22 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3542 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 32,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.8× the energy of this one
  4. This earthquake M 2.7 about 340 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 36.5126, -99.0550. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 22 km (14 mi) ENE of here earthquakes near Woodward County
Woods County, OK 29 km (18 mi) SW of here earthquakes near Woods County
Major County, OK 51 km (32 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 63 km (39 mi) ESE of here earthquakes near Harper County
Alfalfa County, OK 70 km (43 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. 2.5 9 km SW of Waynoka, Oklahoma
  2. 2.5 Oklahoma
  3. 3.2 9 km WSW of Waynoka, Oklahoma
  4. 2.5 17 km SSE of Waynoka, Oklahoma
  5. 2.5 17 km SE of Waynoka, Oklahoma
  6. 2.5 17 km SSE of Waynoka, Oklahoma
  7. 2.5 17 km SSE of Waynoka, Oklahoma
  8. 2.9 17 km SSE of Waynoka, Oklahoma
  9. 2.8 17 km SSE of Waynoka, Oklahoma
  10. 2.7 17 km SSE of Waynoka, Oklahoma
  11. 2.8 8 km WSW of Waynoka, Oklahoma
  12. 2.9 17 km SE of Waynoka, Oklahoma
  13. 2.6 9 km WSW of Waynoka, Oklahoma
  14. 2.5 12 km WSW of Cleo Springs, Oklahoma
  15. 2.7 16 km SE 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 4,000 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.