QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Enid, OK

No earthquake was likely felt in Enid in the 24 hours to 2:11 pm CST (20:11 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 1.8 earthquake was recorded 4 km (3 mi) east of Enid, OK, at 12:42 pm CST on 11 December 2020 (18:42 UTC), 7.0 km deep. 1 person has reported feeling it to USGS.

USGS: 4 km E of Enid, Oklahoma

in Enid, OK · 107 km (67 mi) NNW of Oklahoma City, OK

12:42 pm CST, Dec 11, 2020 · · 7.0 km deep · released about 13 lb of TNT

10 km30 km60 km120 km N Garfield County 4 kmGrant County 43 kmKingfisher County 51 kmNoble County 53 kmAlfalfa County 57 kmLogan County 64 kmMajor County 65 kmKay County 77 kmBlaine 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
12:42 pm CST on 11 December 2020 ()
Where
4 km (3 mi) east of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.8 (ml)
Depth
7.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Garfield County, 4 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2161 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 13 km (8 mi) from the epicentre. In Enid, 4 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: Enid 4 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 13 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 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 840,000× the energy of this one
  3. Around the size people start to feel M 3.0 75× the energy of this one
  4. This earthquake M 1.8 about 13 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 19,000 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 36.3995, -97.8288. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Garfield County, OK 4 km (3 mi) ESE earthquakes near Garfield County
Grant County, OK 43 km (27 mi) N earthquakes near Grant County
Kingfisher County, OK 51 km (32 mi) S earthquakes near Kingfisher County
Noble County, OK 53 km (33 mi) E earthquakes near Noble County
Alfalfa County, OK 57 km (36 mi) NW earthquakes near Alfalfa County
Logan County, OK 64 km (40 mi) SSE earthquakes near Logan County

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

Aftershocks so far

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

  1. 3.5 5 km WNW of Lucien, Oklahoma
  2. 1.5 10 km W of Lamont, Oklahoma
  3. 2.5 4 km SE of Marshall, Oklahoma
  4. 2.1 3 km E of Jet, Oklahoma
  5. 1.9 10 km NW of Perry, Oklahoma
  6. 2.9 10 km NW of Perry, Oklahoma
  7. 2.3 11 km W of Hennessey, Oklahoma
  8. 2.8 4 km W of Lucien, Oklahoma
  9. 1.8 9 km NNW of Perry, Oklahoma
  10. 1.8 8 km E of Nescatunga, Oklahoma
  11. 1.9 7 km E of Nescatunga, Oklahoma
  12. 2.2 6 km ENE of Jefferson, Oklahoma
  13. 2.3 5 km WNW of Lucien, Oklahoma
  14. 1.7 9 km ESE of Jefferson, Oklahoma
  15. 2.2 6 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.