QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Enid, OK

No earthquake was likely felt in Enid in the 24 hours to 10:08 am CST (16:08 UTC). The last one was M 3.4, 89 km (55 mi) S, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Enid

This page: a magnitude 1.9 earthquake was recorded 35 km (22 mi) east-southeast of Enid, OK, at 5:05 am CST on 27 November 2021 (11:05 UTC), 7.0 km deep.

USGS: 5 km W of Lucien, Oklahoma

91 km (56 mi) N of Oklahoma City, OK · 35 km (22 mi) ESE of Enid, OK

5:05 am CST, Nov 27, 2021 · · 7.0 km deep · released about 25 lb of TNT

10 km30 km60 km120 km N Noble County 27 kmGarfield County 27 kmLogan County 41 kmPayne County 53 kmKingfisher County 53 kmGrant County 61 kmKay County 68 kmPawnee County 73 kmOklahoma County 82 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
5:05 am CST on 27 November 2021 ()
Where
35 km (22 mi) east-southeast of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.9 (ml)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Noble County, 27 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1808 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 21 km (13 mi) from the epicentre. In Enid, 35 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Perry 20 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.6 on 2018-04-09 — about 9,800 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 36.2833, -97.5100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Noble County, OK 27 km (17 mi) ENE earthquakes near Noble County
Garfield County, OK 27 km (17 mi) WNW earthquakes near Garfield County
Logan County, OK 41 km (26 mi) S earthquakes near Logan County
Payne County, OK 53 km (33 mi) ESE earthquakes near Payne County
Kingfisher County, OK 53 km (33 mi) SW earthquakes near Kingfisher County
Grant County, OK 61 km (38 mi) NNW earthquakes near Grant County

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

Aftershocks so far

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

  1. 1.7 3 km SE of Marshall, Oklahoma
  2. 1.7 6 km N of Dover, Oklahoma
  3. 1.5 2 km E of Hennessey, Oklahoma
  4. 1.5 2 km E of Hennessey, Oklahoma
  5. 1.5 2 km ENE of Hennessey, Oklahoma
  6. 1.6 2 km E of Hennessey, Oklahoma
  7. 2.8 2 km E of Hennessey, Oklahoma
  8. 1.5 1 km NE of Stillwater, Oklahoma
  9. 1.7 9 km NW of Perry, Oklahoma
  10. 1.7 2 km NW of Covington, Oklahoma
  11. 1.9 9 km ESE of Dover, Oklahoma
  12. 1.7 1 km NNW of Fairmont, Oklahoma
  13. 1.7 10 km W of Lamont, Oklahoma
  14. 1.7 16 km E of Red Rock, Oklahoma
  15. 1.8 8 km NNE of Lucien, 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.