QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

14 km SSE of Freedom, Oklahoma

· 5.4 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woods County 17 kmWoodward County 34 kmMajor County 58 kmHarper County 59 kmComanche County 62 kmAlfalfa County 63 kmBarber County 70 kmDewey County 75 kmEllis 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 2.4 (ml)
Depth
5.4 km below the surface
Felt
no reports yet
Nearest
Woods County, 17 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2984 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 36.6568, -99.0281. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woods County, OK 17 km (10 mi) WSW of here earthquakes near Woods County
Woodward County, OK 34 km (21 mi) NE of here earthquakes near Woodward County
Major County, OK 58 km (36 mi) NW of here earthquakes near Major County
Harper County, OK 59 km (37 mi) ESE of here earthquakes near Harper County
Comanche County, KS 62 km (38 mi) SSE of here earthquakes near Comanche County
Alfalfa County, OK 63 km (39 mi) W of here earthquakes near Alfalfa County

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

Aftershocks so far

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

  1. 2.8 16 km SSE of Waynoka, Oklahoma
  2. 2.7 15 km SSE of Waynoka, Oklahoma
  3. 2.7 5 km WNW of Carmen, Oklahoma
  4. 3.2 15 km SSE of Waynoka, Oklahoma
  5. 2.7 17 km SE of Waynoka, Oklahoma
  6. 2.8 8 km SW of Waynoka, Oklahoma
  7. 2.8 16 km SE of Waynoka, Oklahoma
  8. 3.1 0 km W of Chester, Oklahoma
  9. 2.5 1 km WNW of Chester, Oklahoma
  10. 2.7 17 km SSE of Waynoka, Oklahoma
  11. 3.3 1 km WNW of Chester, Oklahoma
  12. 3.0 0 km WNW of Chester, Oklahoma
  13. 2.9 10 km WSW of Waynoka, Oklahoma
  14. 2.7 1 km WNW of Chester, Oklahoma
  15. 2.4 15 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 11,000 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.