QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

7 km NNE of Mooreland, Oklahoma

· 6.5 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 12 kmWoods County 38 kmHarper County 54 kmEllis County 59 kmDewey County 60 kmMajor County 61 kmComanche County 76 kmAlfalfa County 81 kmBarber County 92 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 2.9 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Woodward County, 12 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3127 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 36.5007, -99.1826. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 12 km (7 mi) NE of here earthquakes near Woodward County
Woods County, OK 38 km (24 mi) SW of here earthquakes near Woods County
Harper County, OK 54 km (34 mi) SE of here earthquakes near Harper County
Ellis County, OK 59 km (37 mi) ENE of here earthquakes near Ellis County
Dewey County, OK 60 km (37 mi) NNW of here earthquakes near Dewey County
Major County, OK 61 km (38 mi) WNW of here earthquakes near Major County

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

Aftershocks so far

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

  1. 2.7 17 km SSE of Waynoka, Oklahoma
  2. 3.6 16 km SSE of Waynoka, Oklahoma
  3. 2.8 14 km SSE of Freedom, Oklahoma
  4. 2.9 14 km SSE of Freedom, Oklahoma
  5. 2.6 9 km SW of Waynoka, Oklahoma
  6. 2.8 23 km NE of Fort Supply, Oklahoma
  7. 2.1 6 km WSW of Chester, Oklahoma
  8. 2.8 15 km SSE of Waynoka, Oklahoma
  9. 2.6 15 km SSW of Freedom, Oklahoma
  10. 2.5 14 km WNW of Waynoka, Oklahoma
  11. 2.6 13 km WNW of Taloga, Oklahoma
  12. 2.4 12 km WNW of Taloga, Oklahoma
  13. 2.6 14 km WNW of Waynoka, Oklahoma
  14. 2.9 14 km SSE of Freedom, Oklahoma
  15. 2.5 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 2,000 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.