QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

3 km N of Kremlin, Oklahoma

· 8.5 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Garfield County 22 kmGrant County 24 kmAlfalfa County 48 kmNoble County 57 kmKay County 66 kmKingfisher County 70 kmMajor County 70 kmHarper County 71 kmSumner County 79 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 2.8 (ml)
Depth
8.5 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Garfield County, 22 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1512 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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 36.5764, -97.8263. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Garfield County, OK 22 km (14 mi) N of here earthquakes near Garfield County
Grant County, OK 24 km (15 mi) S of here earthquakes near Grant County
Alfalfa County, OK 48 km (30 mi) ESE of here earthquakes near Alfalfa County
Noble County, OK 57 km (35 mi) WNW of here earthquakes near Noble County
Kay County, OK 66 km (41 mi) WSW of here earthquakes near Kay County
Kingfisher County, OK 70 km (44 mi) N of here earthquakes near Kingfisher County

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

Aftershocks so far

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

  1. 2.7 5 km WNW of Lucien, Oklahoma
  2. 2.7 3 km W of Lucien, Oklahoma
  3. 2.5 11 km N of Deer Creek, Oklahoma
  4. 1.8 6 km NW of Renfrow, Oklahoma
  5. 2.8 5 km SW of Jet, Oklahoma
  6. 2.3 3 km NW of Fairmont, Oklahoma
  7. 2.6 4 km WNW of Lucien, Oklahoma
  8. 2.4 8 km W of Deer Creek, Oklahoma
  9. 2.6 4 km WNW of Lucien, Oklahoma
  10. 2.3 11 km N of Deer Creek, Oklahoma
  11. 2.3 4 km WNW of Lucien, Oklahoma
  12. 2.4 9 km SSW of Bluff City, Kansas
  13. 2.6 9 km SSE of Covington, Oklahoma
  14. 2.8 9 km SSE of Covington, Oklahoma
  15. 2.5 6 km S of Lahoma, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2016-07-17 — it released about 130 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.