QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Enid, OK

No earthquake was likely felt in Enid in the 24 hours to 4:55 pm CST (22:55 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 1.6 earthquake was recorded 45 km (28 mi) northwest of Enid, OK, at 9:57 pm CDT on 7 August 2020 (02:57 UTC), 4.4 km deep.

USGS: 7 km W of Jet, Oklahoma

45 km (28 mi) NW of Enid, OK · 149 km (92 mi) NNW of Oklahoma City, OK

9:57 pm CDT, Aug 7, 2020 · · 4.4 km deep · released about 6.8 lb of TNT

10 km30 km60 km120 km N Alfalfa County 10 kmMajor County 45 kmGrant County 45 kmGarfield County 53 kmWoods County 54 kmHarper County 62 kmBarber County 73 kmKingfisher County 84 kmBlaine County 88 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
9:57 pm CDT on 7 August 2020 ()
Where
45 km (28 mi) northwest of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.6 (ml)
Depth
4.4 km below the surface
Felt
no reports yet
Nearest
Alfalfa County, 10 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2284 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 3 km (2 mi) from the epicentre. In Enid, 45 km away, the estimate is intensity I (not felt). 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.

Earthquakes near other towns within 30 km: Helena, Cherokee.

How big was it?

This earthquake released about 6.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.8 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 200,000 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 36.6555, -98.2693. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Alfalfa County, OK 10 km (6 mi) NNW earthquakes near Alfalfa County
Major County, OK 45 km (28 mi) SSW earthquakes near Major County
Grant County, OK 45 km (28 mi) ENE earthquakes near Grant County
Garfield County, OK 53 km (33 mi) SE earthquakes near Garfield County
Woods County, OK 54 km (33 mi) W earthquakes near Woods County
Harper County, KS 62 km (38 mi) NNE earthquakes near Harper County

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

Aftershocks so far

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

  1. 1.5 3 km WSW of Cherokee, Oklahoma
  2. 2.0 2 km SSW of Cherokee, Oklahoma
  3. 1.6 3 km NE of Meno, Oklahoma
  4. 1.7 4 km SW of Lambert, Oklahoma
  5. 1.6 16 km SE of Waynoka, Oklahoma
  6. 1.8 16 km SE of Waynoka, Oklahoma
  7. 1.8 7 km E of Nescatunga, Oklahoma
  8. 1.9 7 km E of Nescatunga, Oklahoma
  9. 1.5 4 km SSW of Nescatunga, Oklahoma
  10. 1.5 Oklahoma
  11. 2.1 17 km SE of Waynoka, Oklahoma
  12. 1.7 7 km E of Nescatunga, Oklahoma
  13. 1.7 1 km NW of Cleo Springs, Oklahoma
  14. 1.6 6 km NNE of Ames, Oklahoma
  15. 2.4 6 km NW 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.