QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

5 km E of Pond Creek, Oklahoma

· 6.4 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 14 kmGarfield County 33 kmAlfalfa County 52 kmNoble County 55 kmKay County 56 kmHarper County 65 kmSumner County 67 kmKingfisher County 82 kmMajor County 82 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
6.4 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Grant County, 14 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1517 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

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 36.6681, -97.7407. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 14 km (9 mi) SSE of here earthquakes near Grant County
Garfield County, OK 33 km (20 mi) N of here earthquakes near Garfield County
Alfalfa County, OK 52 km (33 mi) E of here earthquakes near Alfalfa County
Noble County, OK 55 km (34 mi) NW of here earthquakes near Noble County
Kay County, OK 56 km (35 mi) WSW of here earthquakes near Kay County
Harper County, KS 65 km (40 mi) SSE of here earthquakes near Harper County

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

Aftershocks so far

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

  1. 1.9 5 km SSW of Bluff City, Kansas
  2. 3.2 7 km NNW of Hunter, Oklahoma
  3. 2.5 Oklahoma
  4. 2.5 3 km WNW of Lucien, Oklahoma
  5. 3.0 1 km W of Braman, Oklahoma
  6. 3.3 5 km N of Kremlin, Oklahoma
  7. 3.3 5 km N of Kremlin, Oklahoma
  8. 2.9 1 km WSW of Braman, Oklahoma
  9. 3.0 7 km W of Wakita, Oklahoma
  10. 2.8 10 km NW of Medford, Oklahoma
  11. 2.0 Kansas
  12. 2.6 9 km E of Medford, Oklahoma
  13. 2.5 4 km NNW of Douglas, Oklahoma
  14. 2.6 5 km WNW of Lucien, Oklahoma
  15. 3.2 6 km ESE of Covington, 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.