QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

4 km E of Stillwater, Oklahoma

· 4.8 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Payne County 6 kmPawnee County 35 kmNoble County 36 kmLogan County 46 kmLincoln County 48 kmCreek County 61 kmOklahoma County 73 kmGarfield County 76 kmOsage County 78 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 1.8 (ml)
Depth
4.8 km below the surface
Felt
no reports yet
Nearest
Payne County, 6 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3428 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 36.1214, -97.0086. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Payne County, OK 6 km (3 mi) NNW of here earthquakes near Payne County
Pawnee County, OK 35 km (22 mi) SW of here earthquakes near Pawnee County
Noble County, OK 36 km (22 mi) SE of here earthquakes near Noble County
Logan County, OK 46 km (29 mi) ENE of here earthquakes near Logan County
Lincoln County, OK 48 km (30 mi) NNW of here earthquakes near Lincoln County
Creek County, OK 61 km (38 mi) WNW of here earthquakes near Creek County

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

Aftershocks so far

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

  1. 1.8 12 km WSW of Quay, Oklahoma
  2. 2.8 5 km WNW of Lucien, Oklahoma
  3. 2.8 5 km WNW of Lucien, Oklahoma
  4. 2.6 5 km WNW of Lucien, Oklahoma
  5. 2.8 9 km SW of Shamrock, Oklahoma
  6. 2.5 6 km SE of Meridian, Oklahoma
  7. 2.6 5 km SE of Guthrie, Oklahoma
  8. 3.1 3 km SW of Fallis, Oklahoma
  9. 2.6 8 km NNW of Pawnee, Oklahoma
  10. 2.7 12 km NW of Pawnee, Oklahoma
  11. 2.5 9 km SW of Shamrock, Oklahoma
  12. 3.7 8 km SW of Shamrock, Oklahoma
  13. 2.7 2 km N of Cushing, Oklahoma
  14. 1.8 1 km NNW of Cushing, Oklahoma
  15. 2.5 5 km NNE of Red Rock, 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 5.8 on 2016-09-03 — it released about 1,000,000 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.