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 10:48 am CST (16:48 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 29 km (18 mi) west-southwest of Enid, OK, at 2:10 am CST on 7 March 2021 (08:10 UTC), 7.9 km deep.

USGS: 5 km N of Ames, Oklahoma

31 km (19 mi) WSW of Enid, OK · 110 km (68 mi) NNW of Oklahoma City, OK

2:10 am CST, Mar 7, 2021 · · 7.9 km deep · released about 8.7 lb of TNT

10 km30 km60 km120 km N Major County 32 kmGarfield County 36 kmKingfisher County 44 kmAlfalfa County 50 kmBlaine County 51 kmGrant County 65 kmWoods County 78 kmLogan County 78 kmDewey County 83 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
2:10 am CST on 7 March 2021 ()
Where
29 km (18 mi) west-southwest of Enid, OK · earthquakes near Enid
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 1.6 (ml)
Depth
7.9 km below the surface
Felt
no reports yet
Nearest
Major County, 32 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2071 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 6 km (4 mi) from the epicentre. In Enid, 29 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.

Earthquakes near other towns within 30 km: Okeene, Waukomis, Fairview, Helena.

How big was it?

This earthquake released about 8.7 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 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 4.2 on 2018-03-04 — about 6,900 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 36.2950, -98.1828. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Major County, OK 32 km (20 mi) W earthquakes near Major County
Garfield County, OK 36 km (23 mi) ENE earthquakes near Garfield County
Kingfisher County, OK 44 km (28 mi) SSE earthquakes near Kingfisher County
Alfalfa County, OK 50 km (31 mi) NNW earthquakes near Alfalfa County
Blaine County, OK 51 km (32 mi) SSW earthquakes near Blaine County
Grant County, OK 65 km (41 mi) NNE earthquakes near Grant County

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

Aftershocks so far

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

  1. 1.9 3 km SE of Meno, Oklahoma
  2. 1.6 13 km SE of Ames, Oklahoma
  3. 1.6 13 km SE of Ames, Oklahoma
  4. 1.7 6 km NW of Ames, Oklahoma
  5. 2.4 3 km WNW of Douglas, Oklahoma
  6. 1.5 4 km SE of Meno, Oklahoma
  7. 1.6 6 km W of Carmen, Oklahoma
  8. 1.8 4 km W of Marshall, Oklahoma
  9. 1.6 7 km NNE of Loyal, Oklahoma
  10. 1.5 6 km N of Ames, Oklahoma
  11. 2.1 7 km ESE of Ames, Oklahoma
  12. 1.7 6 km NNE of Loyal, Oklahoma
  13. 2.3 6 km NNE of Loyal, Oklahoma
  14. 2.0 6 km WSW of Isabella, Oklahoma
  15. 1.7 2 km SE of Aline, 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.