QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6 km NW of Red Rock, Oklahoma

· 5.7 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Noble County 13 kmKay County 35 kmPawnee County 51 kmPayne County 52 kmGarfield County 53 kmGrant County 60 kmLogan County 69 kmOsage County 74 kmSumner County 85 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
5.7 km below the surface
Felt
no reports yet
Nearest
Noble County, 13 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2678 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 36.5042, -97.2175. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Noble County, OK 13 km (8 mi) N of here earthquakes near Noble County
Kay County, OK 35 km (22 mi) S of here earthquakes near Kay County
Pawnee County, OK 51 km (32 mi) WNW of here earthquakes near Pawnee County
Payne County, OK 52 km (32 mi) NNW of here earthquakes near Payne County
Garfield County, OK 53 km (33 mi) ENE of here earthquakes near Garfield County
Grant County, OK 60 km (37 mi) ESE of here earthquakes near Grant 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 NNE of Nardin, Oklahoma
  2. 1.6 7 km N of Nardin, Oklahoma
  3. 1.9 8 km NNE of Nardin, Oklahoma
  4. 2.8 7 km N of Nardin, Oklahoma
  5. 1.6 6 km N of Morrison, Oklahoma
  6. 2.7 7 km N of Nardin, Oklahoma
  7. 2.2 8 km N of Nardin, Oklahoma
  8. 2.0 8 km NNE of Nardin, Oklahoma
  9. 1.9 6 km N of Nardin, Oklahoma
  10. 2.7 7 km N of Nardin, Oklahoma
  11. 1.8 3 km WSW of Lucien, Oklahoma
  12. 2.1 13 km SSE of Billings, Oklahoma
  13. 1.8 10 km ENE of Perry, Oklahoma
  14. 1.6 6 km ESE of Lucien, Oklahoma
  15. 2.0 7 km WSW of Perry, 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.