QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

7 km NNW of Lamont, Oklahoma

· 6.9 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 18 kmKay County 40 kmGarfield County 46 kmNoble County 52 kmSumner County 54 kmHarper County 64 kmAlfalfa County 65 kmCowley County 85 kmPayne 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 2.6 (ml)
Depth
6.9 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Grant County, 18 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3019 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 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 36.7550, -97.5891. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OK 18 km (11 mi) ESE of here earthquakes near Grant County
Kay County, OK 40 km (25 mi) W of here earthquakes near Kay County
Garfield County, OK 46 km (28 mi) NNE of here earthquakes near Garfield County
Noble County, OK 52 km (32 mi) NW of here earthquakes near Noble County
Sumner County, KS 54 km (34 mi) S of here earthquakes near Sumner County
Harper County, KS 64 km (40 mi) SE of here earthquakes near Harper County

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

Aftershocks so far

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

  1. 2.9 8 km E of Nescatunga, Oklahoma
  2. 2.9 8 km ENE of Nescatunga, Oklahoma
  3. 4.4 8 km E of Nescatunga, Oklahoma
  4. 1.7 5 km SSE of Bluff City, Kansas
  5. 3.1 8 km W of Deer Creek, Oklahoma
  6. 3.2 9 km ESE of Jefferson, Oklahoma
  7. 2.4 3 km N of Renfrow, Oklahoma
  8. 2.5 11 km NE of Wakita, Oklahoma
  9. 2.7 10 km W of Lamont, Oklahoma
  10. 2.6 11 km SSW of Mayfield, Kansas
  11. 2.6 0 km SW of Wakita, Oklahoma
  12. 1.7 1 km S of Bluff City, Kansas
  13. 2.8 4 km NNW of Medford, Oklahoma
  14. 1.6 7 km ESE of Freeport, Kansas
  15. 2.0 4 km SW of Bluff City, Kansas

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-09-08 — it released about 350 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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