Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Edmond, OK
No earthquake was likely felt in Edmond in the 24 hours to 2:26 pm CST (20:26 UTC). The last one was M 3.4, 51 km (32 mi) W, at 5:53 am CST on 7 November 2026, estimated intensity III (weak) in town; 23 felt reports to USGS. Every earthquake near Edmond
This page: a magnitude 1.6 earthquake was recorded 48 km (30 mi) north of Edmond, OK, at 7:15 am CDT on 17 August 2021 (12:15 UTC), 6.4 km deep.
USGS: 9 km WNW of Mulhall, Oklahoma
69 km (43 mi) N of Oklahoma City, OK · 39 km (25 mi) W of Stillwater, OK
- When
- 7:15 am CDT on 17 August 2021 ()
- Where
- 48 km (30 mi) north of Edmond, OK · earthquakes near Edmond
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 1.6 (ml)
- Depth
- 6.4 km below the surface
- Felt
- no reports yet
- Nearest
- Logan County, 20 km SSE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1912 days ago
Earthquake alerts for Edmond, OK
Get a notification in this browser when USGS records an earthquake near Edmond, 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 Edmond, 48 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: Crescent, Guthrie, Langston.
How big was it?
This earthquake released about 7.6 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 2,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.6 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 32,000 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 36.0842, -97.5100. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Logan County, OK | 20 km (12 mi) | SSE | earthquakes near Logan County |
| Kingfisher County, OK | 41 km (25 mi) | WSW | earthquakes near Kingfisher County |
| Garfield County, OK | 41 km (26 mi) | NW | earthquakes near Garfield County |
| Noble County, OK | 41 km (26 mi) | NE | earthquakes near Noble County |
| Payne County, OK | 48 km (30 mi) | E | earthquakes near Payne County |
| Oklahoma County, OK | 60 km (37 mi) | S | earthquakes near Oklahoma 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.
- 1.7 5 km E of Hennessey, Oklahoma
- 1.9 5 km E of Hennessey, Oklahoma
- 2.0 Oklahoma
- 1.5 5 km E of Hennessey, Oklahoma
- 2.7 6 km WNW of Lucien, Oklahoma
- 1.9 9 km NNW of Perry, Oklahoma
- 1.8 10 km NNW of Perry, Oklahoma
- 2.0 9 km NNW of Perry, Oklahoma
- 1.8 9 km NW of Perry, Oklahoma
- 1.9 5 km W of Lucien, Oklahoma
- 1.7 9 km NNW of Perry, Oklahoma
- 2.2 9 km NNW of Perry, Oklahoma
- 1.6 10 km NNW of Perry, Oklahoma
- 1.8 5 km WNW of Lucien, Oklahoma
- 1.9 9 km NNW 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
- 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.