QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

27 km ENE of Buffalo, Oklahoma

· 4.6 km deep · released about 340 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Comanche County 26 kmHarper County 32 kmClark County 50 kmWoods County 51 kmWoodward County 60 kmBarber County 66 kmKiowa County 67 kmEllis County 89 kmFord County 93 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
4.6 km below the surface
Felt
no reports yet
Nearest
Comanche County, 26 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3077 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 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 36.9638, -99.3605. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Comanche County, KS 26 km (16 mi) SSW of here earthquakes near Comanche County
Harper County, OK 32 km (20 mi) NE of here earthquakes near Harper County
Clark County, KS 50 km (31 mi) SE of here earthquakes near Clark County
Woods County, OK 51 km (32 mi) WNW of here earthquakes near Woods County
Woodward County, OK 60 km (37 mi) N of here earthquakes near Woodward County
Barber County, KS 66 km (41 mi) WSW of here earthquakes near Barber County

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

Aftershocks so far

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

  1. 2.2 14 km WNW of Waynoka, Oklahoma
  2. 2.3 14 km WNW of Waynoka, Oklahoma
  3. 1.7 14 km SSE of Freedom, Oklahoma
  4. 1.7 15 km SSE of Freedom, Oklahoma
  5. 2.7 16 km SSW of Freedom, Oklahoma
  6. 2.4 14 km SSE of Freedom, Oklahoma
  7. 2.8 14 km SSE of Freedom, Oklahoma
  8. 2.9 14 km SSE of Freedom, Oklahoma
  9. 2.8 23 km NE of Fort Supply, Oklahoma
  10. 2.6 15 km SSW of Freedom, Oklahoma
  11. 2.5 14 km WNW of Waynoka, Oklahoma
  12. 2.6 14 km WNW of Waynoka, Oklahoma
  13. 2.9 14 km SSE of Freedom, Oklahoma
  14. 2.1 6 km WNW of Buffalo, Oklahoma
  15. 2.3 8 km W of Buffalo, 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.