QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

7 km SSE of Pond Creek, Oklahoma

· 7.1 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 21 kmGarfield County 25 kmAlfalfa County 51 kmNoble County 54 kmKay County 61 kmHarper County 70 kmKingfisher County 74 kmSumner County 75 kmMajor County 76 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
7.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Grant County, 21 km N
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. 1 person has 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 36.6018, -97.7735. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 21 km (13 mi) S of here earthquakes near Grant County
Garfield County, OK 25 km (15 mi) N of here earthquakes near Garfield County
Alfalfa County, OK 51 km (32 mi) ESE of here earthquakes near Alfalfa County
Noble County, OK 54 km (33 mi) WNW of here earthquakes near Noble County
Kay County, OK 61 km (38 mi) WSW of here earthquakes near Kay County
Harper County, KS 70 km (44 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

46 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. 3.3 5 km N of Kremlin, Oklahoma
  6. 3.3 5 km N of Kremlin, Oklahoma
  7. 3.0 7 km W of Wakita, Oklahoma
  8. 2.8 10 km NW of Medford, Oklahoma
  9. 2.0 Kansas
  10. 2.6 9 km E of Medford, Oklahoma
  11. 2.5 4 km NNW of Douglas, Oklahoma
  12. 2.6 5 km WNW of Lucien, Oklahoma
  13. 3.2 6 km ESE of Covington, Oklahoma
  14. 1.6 3 km SSW of Caldwell, Kansas
  15. 2.5 11 km NE of Wakita, 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.