QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

20 km NNE of Woodward, Oklahoma

· 5.0 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 21 kmHarper County 37 kmWoods County 42 kmEllis County 58 kmComanche County 64 kmDewey County 75 kmMajor County 77 kmClark County 82 kmBarber County 88 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 1.9 (ml)
Depth
5.0 km below the surface
Felt
no reports yet
Nearest
Woodward County, 21 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1881 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 36.6100, -99.3170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Woodward County, OK 21 km (13 mi) N of here earthquakes near Woodward County
Harper County, OK 37 km (23 mi) SE of here earthquakes near Harper County
Woods County, OK 42 km (26 mi) WSW of here earthquakes near Woods County
Ellis County, OK 58 km (36 mi) NE of here earthquakes near Ellis County
Comanche County, KS 64 km (40 mi) S 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

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

  1. 2.4 8 km WSW of Waynoka, Oklahoma
  2. 1.6 9 km WSW of Waynoka, Oklahoma
  3. 2.5 8 km WSW of Waynoka, Oklahoma
  4. 2.4 8 km WSW of Waynoka, Oklahoma
  5. 2.6 8 km WSW of Waynoka, Oklahoma
  6. 2.0 Oklahoma
  7. 2.4 9 km WSW of Waynoka, Oklahoma
  8. 1.7 9 km WSW of Waynoka, Oklahoma
  9. 1.8 9 km WSW of Waynoka, Oklahoma
  10. 1.6 5 km NNE of Fort Supply, Oklahoma
  11. 1.6 10 km NNE of May, Oklahoma
  12. 1.7 9 km WSW of Waynoka, Oklahoma
  13. 1.6 8 km NW of Waynoka, Oklahoma
  14. 1.5 16 km ESE of Quinlan, Oklahoma
  15. 1.8 4 km S of Avard, 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.