QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Enid, OK

No earthquake was likely felt in Enid in the 24 hours to 3:46 pm CST (21:46 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 2.1 earthquake was recorded 46 km (29 mi) south of Enid, OK, at 8:54 am CDT on 6 May 2021 (13:54 UTC), 5.3 km deep. 1 person has reported feeling it to USGS.

USGS: 4 km W of Dover, Oklahoma

70 km (44 mi) NW of Oklahoma City, OK · 47 km (29 mi) S of Enid, OK

8:54 am CDT, May 6, 2021 · · 5.3 km deep · released about 40 lb of TNT

10 km30 km60 km120 km N Kingfisher County 5 kmBlaine County 44 kmGarfield County 46 kmLogan County 46 kmCanadian County 49 kmMajor County 64 kmOklahoma County 69 kmNoble County 78 kmAlfalfa County 89 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
8:54 am CDT on 6 May 2021 ()
Where
46 km (29 mi) south of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.1 (ml)
Depth
5.3 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Kingfisher County, 5 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2015 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 27 km (17 mi) from the epicentre. In Enid, 46 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: Kingfisher 14 km, intensity II · Hennessey 14 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 40 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 6,000 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 35.9880, -97.9578. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kingfisher County, OK 5 km (3 mi) SSE earthquakes near Kingfisher County
Blaine County, OK 44 km (27 mi) WSW earthquakes near Blaine County
Garfield County, OK 46 km (29 mi) NNE earthquakes near Garfield County
Logan County, OK 46 km (29 mi) E earthquakes near Logan County
Canadian County, OK 49 km (31 mi) S earthquakes near Canadian County
Major County, OK 64 km (40 mi) NW earthquakes near Major County

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

Aftershocks so far

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

  1. 2.3 3 km SE of Meno, Oklahoma
  2. 1.6 9 km WNW of Mulhall, Oklahoma
  3. 1.9 5 km N of Ames, Oklahoma
  4. 2.3 2 km SE of Meno, Oklahoma
  5. 1.9 6 km NNE of Ames, Oklahoma
  6. 2.3 3 km SE of Meno, Oklahoma
  7. 1.9 5 km E of Enid, Oklahoma
  8. 1.6 3 km SE of Meno, Oklahoma
  9. 1.6 3 km W of Douglas, Oklahoma
  10. 1.6 3 km SE of Meno, Oklahoma
  11. 1.9 6 km SSW of Lahoma, Oklahoma
  12. 2.0 5 km E of Hennessey, Oklahoma
  13. 1.6 5 km WNW of Mulhall, Oklahoma
  14. 1.5 7 km S of Meno, Oklahoma
  15. 1.6 5 km E of Hennessey, 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.