QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

11 km ESE of Fort Supply, Oklahoma

· 3.9 km deep · released about 33 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 21 kmHarper County 33 kmEllis County 45 kmWoods County 56 kmComanche County 72 kmDewey County 75 kmLipscomb County 79 kmClark County 82 kmMajor 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 2.0 (ml)
Depth
3.9 km below the surface
Felt
no reports yet
Nearest
Woodward County, 21 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2526 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 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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 36.5525, -99.4517. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 21 km (13 mi) NW of here earthquakes near Woodward County
Harper County, OK 33 km (21 mi) SE of here earthquakes near Harper County
Ellis County, OK 45 km (28 mi) NE of here earthquakes near Ellis County
Woods County, OK 56 km (35 mi) WSW of here earthquakes near Woods County
Comanche County, KS 72 km (45 mi) SSW of here earthquakes near Comanche County
Dewey County, OK 75 km (47 mi) NNW of here earthquakes near Dewey County

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

Aftershocks so far

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

  1. 1.8 9 km NNE of Quinlan, Oklahoma
  2. 1.5 10 km NNE of Quinlan, Oklahoma
  3. 1.7 10 km NNE of Quinlan, Oklahoma
  4. 2.0 Oklahoma
  5. 1.6 8 km SE of Mooreland, Oklahoma
  6. 1.7 9 km NNE of Quinlan, Oklahoma
  7. 1.7 7 km ESE of Mooreland, Oklahoma
  8. 1.6 7 km ESE of Mooreland, Oklahoma
  9. 2.2 26 km NE of Buffalo, Oklahoma
  10. 1.8 6 km ESE of Mooreland, Oklahoma
  11. 1.8 Oklahoma
  12. 1.7 6 km ESE of Mooreland, Oklahoma
  13. 1.9 6 km ESE of Mooreland, Oklahoma
  14. 1.6 10 km NE of Quinlan, Oklahoma
  15. 2.0 10 km WSW 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.