Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Enid, OK
No earthquake was likely felt in Enid in the 24 hours to 4:00 pm CST (22:00 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 27 km (17 mi) west-southwest of Enid, OK, at 2:26 am CST on 20 December 2021 (08:26 UTC), 7.6 km deep.
USGS: 7 km NNE of Ames, Oklahoma
28 km (18 mi) WSW of Enid, OK · 110 km (68 mi) NNW of Oklahoma City, OK
- When
- 2:26 am CST on 20 December 2021 ()
- Where
- 27 km (17 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
- 7.6 km below the surface
- Felt
- no reports yet
- Nearest
- Garfield County, 34 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1787 days ago
Earthquake alerts for Enid, OK
Get a notification in this browser when USGS records an earthquake near Enid, OK. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 4 km (2 mi) from the epicentre. In Enid, 27 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: Waukomis, Okeene, Helena, Fairview.
How big was it?
This earthquake released about 8.1 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.
- Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
- Around the size people start to feel M 3.0 120× the energy of this one
- This earthquake M 1.6 about 8.1 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 7,400 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 36.3053, -98.1592. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Garfield County, OK | 34 km (21 mi) | ENE | earthquakes near Garfield County |
| Major County, OK | 34 km (21 mi) | W | earthquakes near Major County |
| Kingfisher County, OK | 44 km (28 mi) | SSE | earthquakes near Kingfisher County |
| Alfalfa County, OK | 49 km (31 mi) | NNW | earthquakes near Alfalfa County |
| Blaine County, OK | 53 km (33 mi) | SSW | earthquakes near Blaine County |
| Grant County, OK | 63 km (39 mi) | NNE | earthquakes near Grant County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
46 earthquakes have been recorded within 50 km since this one.
- 1.9 4 km W of Dover, Oklahoma
- 1.8 5 km N of Ames, Oklahoma
- 1.9 5 km WSW of Aline, Oklahoma
- 2.1 Oklahoma
- 2.2 5 km E of Hennessey, Oklahoma
- 1.5 5 km E of Hennessey, Oklahoma
- 1.6 1 km N of Fairmont, Oklahoma
- 1.5 5 km N of Ames, Oklahoma
- 1.6 5 km E of Hennessey, Oklahoma
- 2.1 5 km N of Ames, Oklahoma
- 2.9 5 km N of Ames, Oklahoma
- 1.8 5 km N of Ames, Oklahoma
- 1.5 5 km E of Hennessey, Oklahoma
- 2.2 10 km E of Longdale, Oklahoma
- 2.2 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.