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 5:32 pm CST (23:32 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 47 km (29 mi) west-northwest of Enid, OK, at 1:12 am CDT on 3 October 2019 (06:12 UTC), 7.1 km deep.

USGS: 5 km ESE of Aline, Oklahoma

48 km (30 mi) WNW of Enid, OK · 139 km (86 mi) NW of Oklahoma City, OK

1:12 am CDT, Oct 3, 2019 · · 7.1 km deep · released about 38 lb of TNT

10 km30 km60 km120 km N Major County 25 kmAlfalfa County 26 kmWoods County 49 kmGarfield County 55 kmGrant County 63 kmBlaine County 69 kmKingfisher County 73 kmWoodward County 79 kmDewey County 81 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
1:12 am CDT on 3 October 2019 ()
Where
47 km (29 mi) west-northwest of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.1 (ml)
Depth
7.1 km below the surface
Felt
no reports yet
Nearest
Major County, 25 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2596 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 26 km (16 mi) from the epicentre. In Enid, 47 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: Helena 12 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 38 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 5.8 390,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 280,000× the energy of this one
  3. Around the size people start to feel M 3.0 25× the energy of this one
  4. This earthquake M 2.1 about 38 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 5.1 on 2016-02-13 — about 35,000 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 36.4978, -98.3893. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Major County, OK 25 km (15 mi) SSW earthquakes near Major County
Alfalfa County, OK 26 km (16 mi) NNE earthquakes near Alfalfa County
Woods County, OK 49 km (31 mi) WNW earthquakes near Woods County
Garfield County, OK 55 km (34 mi) ESE earthquakes near Garfield County
Grant County, OK 63 km (39 mi) ENE earthquakes near Grant County
Blaine County, OK 69 km (43 mi) S earthquakes near Blaine 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. 2.3 6 km ESE of Cherokee, Oklahoma
  2. 1.9 5 km N of Ames, Oklahoma
  3. 3.6 4 km N of Ames, Oklahoma
  4. 3.6 5 km N of Ames, Oklahoma
  5. 2.3 16 km ENE of Chester, Oklahoma
  6. 2.5 8 km S of Goltry, Oklahoma
  7. 1.6 6 km NW of North Enid, Oklahoma
  8. 1.9 6 km NNE of Ames, Oklahoma
  9. 1.6 6 km NNE of Ames, Oklahoma
  10. 2.0 15 km SSE of Waynoka, Oklahoma
  11. 2.8 7 km NNE of Ames, Oklahoma
  12. 1.6 7 km NNE of Ames, Oklahoma
  13. 2.2 8 km E of Nescatunga, Oklahoma
  14. 2.1 17 km SE of Waynoka, Oklahoma
  15. 2.2 7 km N of Ames, 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.